From: Robert C. Motzer <1RCM@e...> Date: Thu Feb 17, 2000 9:34am Subject: Re: Digest Number 186 I also would like to reply to the book reports posted in Digest #186. In doing so I will try to avoid any 'defending of his honor' writings like that which I am sure many others on this list who know Glenn Whidden most certainly must be contemplating. Instead I will simply offer my own personal 'book review' of "The Ear" in an attempt to give those on the list who do not know of Glenn and his writings an opposing view to consider. And to Kevin Murray - Amen to all of your comments, you saved me quite a bit of typing! I too own and have read all of the books referenced by the reviewer. With "The Ear" series I think that one needs to keep in mind the original purpose of that particular three volume set of books. As the reviewer himself stated, "...he has the amazing ability to take a moderately complex topic and write it so that anyone can understand it". Therein lies the key to any fair evaluation of "The Ear" series of books themselves - cost and content included. For it is my understanding that this series of books was originally produced to be used within Glenn's TSCM training courses. Those courses are open to both the 'novice' who is 'just starting to learn' TSCM as well as to the 'pro' who is simply seeking to 'broaden or refresh' his already-established knowledge base. The series was then only later also offered as a 'stand alone' venue simply to honor the many requests for it from those who for various reasons could not take Glenn's course in person. Having taken the course myself I will admit to a certain bit of bios here. However, for the sake of objectivity one only needs to take a look at the prices of some other 'course materials' that are able to be obtained without one actually 'taking' the applicable course itself (and admittedly it is rather tough to find very many of these at all within any discipline, let alone TSCM ). When one does so I believe that for the most part it becomes very clear that the price of Glenn's books often pale in comparison. And please keep in mind that with the preceding statement I am talking about real courses that take a considerable amount of hours and effort for one to complete - not one or two day seminars. Several years ago I was fortunate enough to have been afforded some most excellent TSCM training by my employer. But what I had lacked after completing that training was any kind of 'diploma' to show perspective clients as a testament to my bona fides when soliciting business for my 'night job'. And so that is precisely why I took Glenn's course and had to 'buy' the books referenced in the first place. To me having a diploma with Glenn's name on it was well worth the cost of the books that accompanied the course. What I thought that I was going to wind up learning from those books was secondary. However, after I finished the course (and had read all three books from cover to cover more than a few times) I came to realize that I had in fact learned quite a number of things that my employer's training had failed to teach me. But then again I also had freely availed myself of the give and take 'learning experience' that Glenn offers in support of all of his books - whether it be via e-mail, telephone or however else one chooses to correspond with him. And so perhaps along with the other 'book review criteria' that Kevin mentioned we should also add something like 'personal value to the reviewer' to the list. For in the end isn't that really the true measure of the cost vs. return factor for any book one buys? To me personally all of Glenn's books ("The Ear" most especially) were quite reasonable in price when I consider overall what I got out of them. But on the other hand I have purchased several other TSCM-related books, some for as little as $20, that in my opinion were in of themselves extremely 'overpriced'. To each his own. And as for the Taylor, Udovich book: without a doubt it is a very informative, well written, fact-filled, extremely educational, etc., etc. TEXTBOOK / REFERENCE BOOK. And to that end it is exactly the same as most other books in that broad category - whether they be for TSCM 'education' purposes or for a pre-med biology class ..... much higher-priced then one would like and thinks that they should be, but purchased none-the-less at that inflated price simply because of their very nature. So in essence doesn't that make the Taylor, Udovich book absolutely the same as the reviewer has declared Glenn Whidden's "The Ear" series to be. But then again - that's just my opinion ... thanks for considering it. Just another "Bob" 32 From: Eddy Payne Date: Fri Feb 18, 2000 8:10am Subject: INTRODUCTION Hello Gentlemen, Myself (Eddy Payne) and Chris Claypole would like to thank Mr James M Atkinson for allowing us to join the TSCM community. Whilst we appreciate that this community is aimed at TSCM operation in America and we are UK based, we are truly an international company with clients both at home and overseas. Therefore the cross fertilisation of ideas and working practices will I hope, be of benefit to us all. Chris is our Operations Manager and I am our Research and Development Manager. Between us we have over sixty years of experience in military and government departments. Our background has been with Special Forces, special operations, communications and special projects throughout the world. Our Company, Labyrinth International, is still yet in its infancy having only been formed since the beginning of 1999 and whilst our core business is TSCM, our Company ethos is “Technical Solutions for Technical Problems”. Thank you for taking the time to read this, our introduction to the group. Eddy Payne EJPayne@e... Chris Claypole cclaypole@t... 33 From: Dawn Star Date: Fri Feb 18, 2000 5:53pm Subject: switch software manipulation Dear Charles Patterson, I read your breakout box posting, I remember back in 1973 I purchased a MLJ 101 which was a sequencer built in a suitcase, in those days we had to sort out all combinations of the 25 pairs which were then fed to a vector scope . I still have that unit but have not needed to use it in the last ten years. Electronic phone systems are simpler in the sense of less pairs but more dangerous in that the on site switch can be manipulated in software. In many cases you must dump the software and compare it for covert modifications This is no easy task being so many switches and software, but this is a business for the meticulous...unless you are prepared to hear your words on tape " Yes Mr.Gotti we tested your lines and they're clean...no problem" Best, Roger [Non-text portions of this message have been removed] 34 From: Paul de Cogan Date: Sun Feb 20, 2000 1:35pm Subject: Re: INTRODUCTION Dear Edie & Chris, Best of luck and cotiuing sucess to your ventures , From the Minerva (TSCM Team ) Group. Paul de Cogan. >From: "Eddy Payne" >Reply-To: TSCM-L@onelist.com >To: "TSCM-L" >CC: "Tim Graham" >Subject: [TSCM-L] INTRODUCTION >Date: Fri, 18 Feb 2000 14:10:04 -0000 > >Hello Gentlemen, > >Myself (Eddy Payne) and Chris Claypole would like to thank Mr James M >Atkinson for allowing us to join the TSCM community. Whilst we appreciate >that this community is aimed at TSCM operation in America and we are UK >based, we are truly an international company with clients both at home and >overseas. Therefore the cross fertilisation of ideas and working practices >will I hope, be of benefit to us all. Chris is our Operations Manager and >I >am our Research and Development Manager. Between us we have over sixty >years >of experience in military and government departments. Our background has >been with Special Forces, special operations, communications and special >projects throughout the world. > >Our Company, Labyrinth International, is still yet in its infancy having >only been formed since the beginning of 1999 and whilst our core business >is >TSCM, our Company ethos is “Technical Solutions for Technical Problems”. > >Thank you for taking the time to read this, our introduction to the group. > >Eddy Payne EJPayne@e... >Chris Claypole cclaypole@t... > > > > > > > > > ______________________________________________________ Get Your Private, Free Email at http://www.hotmail.com 35 From: Charles Patterson Date: Sun Feb 20, 2000 2:42pm Subject: Re: switch software manipulation Another problem with some of the more poorly designed electronic switches is that you can mess 'em up if you short out the wrong pair. In the small office variety, the Intertel GMX will blow it's master fuse if you short an extension pair, a Panasonic analog system can drop all co calls if a data pair is shorted! as you say, a job for the meticulous. charles ----- Original Message ----- From: Dawn Star To: Sent: Friday, February 18, 2000 6:53 PM Subject: [TSCM-L] switch software manipulation > > From: "Dawn Star" > > Dear Charles Patterson, I read your breakout box posting, I remember back in 1973 I purchased a MLJ 101 which was a sequencer built in a suitcase, in those days we had to sort out all combinations of the 25 pairs which were then fed to a vector scope . I still have that unit but have not needed to use it in the last ten years. Electronic phone systems are simpler in the sense of less pairs but more dangerous in that the on site switch can be manipulated in software. In many cases you must dump the software and compare it for covert modifications This is no easy task being so many switches and software, but this is a business for the meticulous...unless you are prepared to hear your words on tape " Yes Mr.Gotti we tested your lines and they're clean...no problem" > Best, Roger > > > [Non-text portions of this message have been removed] > > > ------------------------------------------------------------------------ > Shop the web for great deals. Save on Computers, > electronics, Home furnishings and more. > http://click.egroups.com/1/1559/1/_/_/_/951025472/ > ------------------------------------------------------------------------ > > ======================================================== > TSCM-L Technical Security Mailing List > "In a multitude of counselors there is strength" > > To subscribe to the TSCM-L mailing list visit: > http://www.onelist.com/community/TSCM-L > > or email your subscription request to: > subTSCM-L@t... > =================================================== TSKS > 36 From: Jay Coote Date: Fri Feb 4, 2005 3:39pm Subject: Re: switch software manipulation Not that this would ever happen to be, but I know of a fellow who performed a sweep in the corporate offices of a company at "oh-dark-thirty" in the morning. The hapless and tired sweeper blew a fuse in the client's ESU, and I am certain he had that sinking feeling as he realized the time and the unusual type of the fuse. Fortunately, a thoughtful telephone technician left some spares. Jay Coote ---------- > From: "Charles Patterson" > > Another problem with some of the more poorly designed electronic switches is > that you can mess 'em up if you short out the wrong pair. In the small > office variety, the Intertel GMX will blow it's master fuse if you short an > extension pair, a Panasonic analog system can drop all co calls if a data > pair is shorted! > > as you say, a job for the meticulous. > > charles > > > ----- Original Message ----- > From: Dawn Star > To: > Sent: Friday, February 18, 2000 6:53 PM > Subject: [TSCM-L] switch software manipulation > > > > > > From: "Dawn Star" > > > > Dear Charles Patterson, I read your breakout box posting, I remember back > in 1973 I purchased a MLJ 101 which was a sequencer built in a suitcase, in > those days we had to sort out all combinations of the 25 pairs which were > then fed to a vector scope . I still have that unit but have not needed to > use it in the last ten years. Electronic phone systems are simpler in the > sense of less pairs but more dangerous in that the on site switch can be > manipulated in software. In many cases you must dump the software and > compare it for covert modifications This is no easy task being so many > switches and software, but this is a business for the meticulous...unless > you are prepared to hear your words on tape " Yes Mr.Gotti we tested your > lines and they're clean...no problem" > > Best, Roger > > > > > > [Non-text portions of this message have been removed] > > > > > > ------------------------------------------------------------------------ > > Shop the web for great deals. Save on Computers, > > electronics, Home furnishings and more. > > http://click.egroups.com/1/1559/1/_/_/_/951025472/ > > ------------------------------------------------------------------------ > > > > ======================================================== > > TSCM-L Technical Security Mailing List > > "In a multitude of counselors there is strength" > > > > To subscribe to the TSCM-L mailing list visit: > > http://www.onelist.com/community/TSCM-L > > > > or email your subscription request to: > > subTSCM-L@t... > > =================================================== TSKS > > > > > ------------------------------------------------------------------------ > You have a voice mail message waiting for you at iHello.com: > http://click.egroups.com/1/1381/1/_/_/_/951080721/ > ------------------------------------------------------------------------ > > ======================================================== > TSCM-L Technical Security Mailing List > "In a multitude of counselors there is strength" > > To subscribe to the TSCM-L mailing list visit: > http://www.onelist.com/community/TSCM-L > > or email your subscription request to: > subTSCM-L@t... > =================================================== TSKS > > 37 From: Trace Carpenter Date: Mon Feb 21, 2000 0:12pm Subject: Re: switch software manipulation I haven't been in the office much lately, so I haven't followed this tread very closely. Therefore I apologize if this is redundant, however if monitoring the wire pair for audio passage is the problem, you can build a fantastic little interface out of a 1:1 transformer and a non polarized capacitor. Both available at your local RadShk for a couple of bucks. You can even use a three pair RJ surface jack as a project box for the interface. We use them all the time when we're bringing audio from one source to another to keep from getting that nasty hum that you'll often get from dissimilar grounds. In fact we came up with it for use in an East Texas radio station that was having that hum problem with their equipment that they used to put callers on the air. They're cheap, easy and the nice thing is that since the transformer is a 1:1 and the cap is non polarized, there is no wrong way to hook it up and your equipment is totally isolated from the wire pairs. Like I said, I haven't been able to follow this tread lately so if this answer doesn't fit the original question, please accept my apologies. Jay Coote wrote: > From: "Jay Coote" > > Not that this would ever happen to be, but I know of a fellow who performed a > sweep in the corporate offices of a company at "oh-dark-thirty" in the morning. > The hapless and tired sweeper blew a fuse in the client's ESU, and I am > certain he had that sinking feeling as he realized the time and the unusual type > of the fuse. Fortunately, a thoughtful telephone technician left some spares. > > Jay Coote > > ---------- > > From: "Charles Patterson" > > > > Another problem with some of the more poorly designed electronic switches is > > that you can mess 'em up if you short out the wrong pair. In the small > > office variety, the Intertel GMX will blow it's master fuse if you short an > > extension pair, a Panasonic analog system can drop all co calls if a data > > pair is shorted! > > > > as you say, a job for the meticulous. > > > > charles > > > > > > ----- Original Message ----- > > From: Dawn Star > > To: > > Sent: Friday, February 18, 2000 6:53 PM > > Subject: [TSCM-L] switch software manipulation > > > > > > > > > > From: "Dawn Star" > > > > > > Dear Charles Patterson, I read your breakout box posting, I remember back > > in 1973 I purchased a MLJ 101 which was a sequencer built in a suitcase, in > > those days we had to sort out all combinations of the 25 pairs which were > > then fed to a vector scope . I still have that unit but have not needed to > > use it in the last ten years. Electronic phone systems are simpler in the > > sense of less pairs but more dangerous in that the on site switch can be > > manipulated in software. In many cases you must dump the software and > > compare it for covert modifications This is no easy task being so many > > switches and software, but this is a business for the meticulous...unless > > you are prepared to hear your words on tape " Yes Mr.Gotti we tested your > > lines and they're clean...no problem" > > > Best, Roger > > > > > > > > > [Non-text portions of this message have been removed] > > > > > > > > > ------------------------------------------------------------------------ > > > Shop the web for great deals. Save on Computers, > > > electronics, Home furnishings and more. > > > http://click.egroups.com/1/1559/1/_/_/_/951025472/ > > > ------------------------------------------------------------------------ > > > > > > ======================================================== > > > TSCM-L Technical Security Mailing List > > > "In a multitude of counselors there is strength" > > > > > > To subscribe to the TSCM-L mailing list visit: > > > http://www.onelist.com/community/TSCM-L > > > > > > or email your subscription request to: > > > subTSCM-L@t... > > > =================================================== TSKS > > > > > > > > > ------------------------------------------------------------------------ > > You have a voice mail message waiting for you at iHello.com: > > http://click.egroups.com/1/1381/1/_/_/_/951080721/ > > ------------------------------------------------------------------------ > > > > ======================================================== > > TSCM-L Technical Security Mailing List > > "In a multitude of counselors there is strength" > > > > To subscribe to the TSCM-L mailing list visit: > > http://www.onelist.com/community/TSCM-L > > > > or email your subscription request to: > > subTSCM-L@t... > > =================================================== TSKS > > > > > > ------------------------------------------------------------------------ > Get what you deserve with NextCard Visa! ZERO! Rates as low as > 0.0% Intro APR, online balance transfers, Rewards Points, no > hidden fees, and much more! Get NextCard today and get the credit > you deserve! Apply now! Get your NextCard Visa at: > http://click.egroups.com/1/966/1/_/_/_/951152904/ > ------------------------------------------------------------------------ > > ======================================================== > TSCM-L Technical Security Mailing List > "In a multitude of counselors there is strength" > > To subscribe to the TSCM-L mailing list visit: > http://www.onelist.com/community/TSCM-L > > or email your subscription request to: > subTSCM-L@t... > =================================================== TSKS -- *Trace Carpenter *2926 Maple Ave., Ste. 200 *Dallas, Texas 75201 *214.828.4520; 214.740-0112 Facsimile *Because the fly on the wall might not be the only bug in the room.™ 38 From: Hoffman Date: Mon Feb 21, 2000 8:48am Subject: Government intruding on security industry; again. Here is a miscellanous piece of information which I picked up while reading this months issue of "Security" magazine [1]. I'm following up on the details and will post more if If I find out anything relevant. (Incidentally, this article just gives me an excuse to discuss something which I've wanted to talk about for a while. I feel it is a gross injustice to free trade in this country. Also, I think the majority has a really lopsided view about so-called privacy in this country.. People have become so accustomed to video camers in this country that we no longer view them as "privacy invasive"; yet somehow people have a problem with audio.) It appears that once again, some individuals within the government are taking it upon themselves to interfere with the free trade of lawful business. This time US DoJ is reported to be conducting investigations of CCTV manufacturers (or more likely resellers, aka "the little guy") who sell units with USC 18, 119 capabilities (aka "Title III"; although I dont know why people keep using that phrase, as it does not seem to apply anymore.) Anyone who knows security products well and follows the industry closely, knows that these CCTV units with audio capability are quite popular, and have become moreso in the last few years. We're not talking "under the table dealings" by some tiny manufacturer in his secret spy laboratory. Major CCTV manufacturers are making these units and have been selling them for what I view as very legitimate security uses. And we're not just talking "intercoms" here. We know what people are using this stuff for. The hypocrisy in this country just reeks in my opinion. We've got a whole lot of really dumb people in my opinion who have absolutely no problem with the fact that virtually no CCTV laws exist (not on the federal level; and even on the state level, such laws are scarce). People seem to have no problem whatsoever with the fact that CCTV can (and has been) installed in bathrooms, dressing rooms, etc.. as long as it is business that is doing the snooping for "legitimate security concerns".. Yet, as soon as we talk audio capability, all of a sudden the nutcases come out of the woodwork and complain about "privacy violations"; gimme a break. Talk about double-standards. Anyway, so we'll just sit back and wait to see who gets arrested. My bet is that as usual; the government will pick the easiest targets; aka "the little guy". The govt won't go after the manufacturers, as they rarely do, such is the case when the govt has bullied little "spy shops", but refuse to go after the manufacturers of audio intercept equipment who are selling this eqpt to the spy shops (and dont tell me that only Japanese companies are making this stuff because thats bullshit. I know virtually every company that makes Title III goods, and only a modest fraction of it is from Japan or Europe.) Right now, the DoJ (who is coordinating US Customs) claim they will only go after manufacturers of equipment who's products clearly violate 2515 (i.e. products where it is clear that the unit is intended to covertly intercept audio... as opposed to cameras that have intercom capabilities. ) [1] Security, page 25, February 2000. http://www.securitymagazine.com - Alan Hoffman 39 From: Steve Uhrig Date: Mon Feb 21, 2000 9:00am Subject: Used surveillance, TSCM, commo equip FS Hello list, We have updated our list of used equipment for sale. http://www.swssec.com/used.html Latest listing of used surveillance, countersurveillance, communication, X-ray, direction finding/tracking, full coverage receivers, a 3D 35mm camera, UV stuff, covert transmitters, super high powered video transmitters, surveillance van stuff. And a high voltage transformer for making really big sparks. http://www.swssec.com/used.html Credit cards accepted. Also looking to buy used equipment similar to above. Please search through your inventory and email me a list of anything related you have to sell. Tks .... Steve ******************************************************************* Steve Uhrig, SWS Security, Maryland (USA) Mfrs of electronic surveillance equip mailto:Steve@s... website http://www.swssec.com tel +1+410-879-4035, fax +1+410-836-1190 "In God we trust, all others we monitor" ******************************************************************* 40 From: Perry Myers Date: Mon Feb 21, 2000 11:16am Subject: RE: switch software manipulation I too have had such embarrassing moments and have scrambled to Radio Shack in an effort to find a fuse replacement. I now warn my clients ahead of time that this is a potential issue and to make sure that if the phone system uses fuses, to have some extras on hand. Even if they don't, they can't say you did not warn them! Perry D. Myers, CFE Myers Service, Inc. Investigations email: perry@d... For information on investigative services visit our web site: www.detectiveservices.com This e-mail is strictly confidential. If you receive this email in error, please forward to info@d.... -----Original Message----- From: Jay Coote [mailto:TSCM@j...] Sent: None To: TSCM-L@onelist.com; TSCM-L@onelist.com Subject: Re: [TSCM-L] switch software manipulation From: "Jay Coote" Not that this would ever happen to be, but I know of a fellow who performed a sweep in the corporate offices of a company at "oh-dark-thirty" in the morning. The hapless and tired sweeper blew a fuse in the client's ESU, and I am certain he had that sinking feeling as he realized the time and the unusual type of the fuse. Fortunately, a thoughtful telephone technician left some spares. Jay Coote ---------- > From: "Charles Patterson" > > Another problem with some of the more poorly designed electronic switches is > that you can mess 'em up if you short out the wrong pair. In the small > office variety, the Intertel GMX will blow it's master fuse if you short an > extension pair, a Panasonic analog system can drop all co calls if a data > pair is shorted! > > as you say, a job for the meticulous. > > charles > > > ----- Original Message ----- > From: Dawn Star > To: > Sent: Friday, February 18, 2000 6:53 PM > Subject: [TSCM-L] switch software manipulation > > > > > > From: "Dawn Star" > > > > Dear Charles Patterson, I read your breakout box posting, I remember back > in 1973 I purchased a MLJ 101 which was a sequencer built in a suitcase, in > those days we had to sort out all combinations of the 25 pairs which were > then fed to a vector scope . I still have that unit but have not needed to > use it in the last ten years. Electronic phone systems are simpler in the > sense of less pairs but more dangerous in that the on site switch can be > manipulated in software. In many cases you must dump the software and > compare it for covert modifications This is no easy task being so many > switches and software, but this is a business for the meticulous...unless > you are prepared to hear your words on tape " Yes Mr.Gotti we tested your > lines and they're clean...no problem" > > Best, Roger > > > > > > [Non-text portions of this message have been removed] > > > > > > ------------------------------------------------------------------------ > > Shop the web for great deals. Save on Computers, > > electronics, Home furnishings and more. > > http://click.egroups.com/1/1559/1/_/_/_/951025472/ > > ------------------------------------------------------------------------ > > > > ======================================================== > > TSCM-L Technical Security Mailing List > > "In a multitude of counselors there is strength" > > > > To subscribe to the TSCM-L mailing list visit: > > http://www.onelist.com/community/TSCM-L > > > > or email your subscription request to: > > subTSCM-L@t... > > =================================================== TSKS > > > > > ------------------------------------------------------------------------ > You have a voice mail message waiting for you at iHello.com: > http://click.egroups.com/1/1381/1/_/_/_/951080721/ > ------------------------------------------------------------------------ > > ======================================================== > TSCM-L Technical Security Mailing List > "In a multitude of counselors there is strength" > > To subscribe to the TSCM-L mailing list visit: > http://www.onelist.com/community/TSCM-L > > or email your subscription request to: > subTSCM-L@t... > =================================================== TSKS > > ------------------------------------------------------------------------ Get what you deserve with NextCard Visa! ZERO! Rates as low as 0.0% Intro APR, online balance transfers, Rewards Points, no hidden fees, and much more! Get NextCard today and get the credit you deserve! Apply now! Get your NextCard Visa at: http://click.egroups.com/1/966/1/_/_/_/951152904/ ------------------------------------------------------------------------ ======================================================== TSCM-L Technical Security Mailing List "In a multitude of counselors there is strength" To subscribe to the TSCM-L mailing list visit: http://www.onelist.com/community/TSCM-L or email your subscription request to: subTSCM-L@t... =================================================== TSKS 41 From: Dawn Star Date: Mon Feb 21, 2000 0:33pm Subject: renegade taps Back in the eighties I busted some of these taps, http://pd.co.la.ca.us/index.htm what does the TSCM community have to say about these activities. Do the targets have fourth and fifth amendment rights, is every citizen entitled to TSCM services as a matter of right? What say you? Roger [Non-text portions of this message have been removed] 42 From: Rocco Rosano Date: Mon Feb 21, 2000 0:48pm Subject: Re: switch software manipulation Et Al: Jay is correct. The "Isolation Box" has been in use for over 40 years. I have seen several different versions of it; but I believe Jay's description is very accurate. There are a number of ways to "pick-off" information from cable bundles and pairs, depending on the kind of physical access you have and, most importantly, how good your amplifiers are in terms of signal-to-noise and low frequency filtering. In the old days, a Zetron Amp was extremely good, but there where some applications that the Dektor Amp was superior. I, on more than one occasion, used a Dektor and a magnetic probe to detect audio frequencies carrying intelligence classified information to the outside world. No direct connection to the line was necessary. This same technique is not possible with a Zetron, which cost much more, because of a design characteristic. Rocco Rosano Reynoldsburg, Ohio mailto:roccorosano@a... Trace Carpenter wrote: > From: Trace Carpenter > > I haven't been in the office much lately, so I haven't followed this tread very > closely. Therefore I apologize if this is redundant, however if monitoring the wire > pair for audio passage is the problem, you can build a fantastic little interface > out of a 1:1 transformer and a non polarized capacitor. Both available at your > local RadShk for a couple of bucks. You can even use a three pair RJ surface jack > as a project box for the interface. > > We use them all the time when we're bringing audio from one source to another to > keep from getting that nasty hum that you'll often get from dissimilar grounds. In > fact we came up with it for use in an East Texas radio station that was having that > hum problem with their equipment that they used to put callers on the air. They're > cheap, easy and the nice thing is that since the transformer is a 1:1 and the cap is > non polarized, there is no wrong way to hook it up and your equipment is totally > isolated from the wire pairs. > > Like I said, I haven't been able to follow this tread lately so if this answer > doesn't fit the original question, please accept my apologies. > > Jay Coote wrote: > > > From: "Jay Coote" > > > > Not that this would ever happen to be, but I know of a fellow who performed a > > sweep in the corporate offices of a company at "oh-dark-thirty" in the morning. > > The hapless and tired sweeper blew a fuse in the client's ESU, and I am > > certain he had that sinking feeling as he realized the time and the unusual type > > of the fuse. Fortunately, a thoughtful telephone technician left some spares. > > > > Jay Coote > > > > ---------- > > > From: "Charles Patterson" > > > > > > Another problem with some of the more poorly designed electronic switches is > > > that you can mess 'em up if you short out the wrong pair. In the small > > > office variety, the Intertel GMX will blow it's master fuse if you short an > > > extension pair, a Panasonic analog system can drop all co calls if a data > > > pair is shorted! > > > > > > as you say, a job for the meticulous. > > > > > > charles > > > > > > > > > ----- Original Message ----- > > > From: Dawn Star > > > To: > > > Sent: Friday, February 18, 2000 6:53 PM > > > Subject: [TSCM-L] switch software manipulation > > > > > > > > > > > > > > From: "Dawn Star" > > > > > > > > Dear Charles Patterson, I read your breakout box posting, I remember back > > > in 1973 I purchased a MLJ 101 which was a sequencer built in a suitcase, in > > > those days we had to sort out all combinations of the 25 pairs which were > > > then fed to a vector scope . I still have that unit but have not needed to > > > use it in the last ten years. Electronic phone systems are simpler in the > > > sense of less pairs but more dangerous in that the on site switch can be > > > manipulated in software. In many cases you must dump the software and > > > compare it for covert modifications This is no easy task being so many > > > switches and software, but this is a business for the meticulous...unless > > > you are prepared to hear your words on tape " Yes Mr.Gotti we tested your > > > lines and they're clean...no problem" > > > > Best, Roger > > > > > > > > > > > > [Non-text portions of this message have been removed] > > > > > > > > > > > > ------------------------------------------------------------------------ > > > > Shop the web for great deals. Save on Computers, > > > > electronics, Home furnishings and more. > > > > http://click.egroups.com/1/1559/1/_/_/_/951025472/ > > > > ------------------------------------------------------------------------ > > > > > > > > ======================================================== > > > > TSCM-L Technical Security Mailing List > > > > "In a multitude of counselors there is strength" > > > > > > > > To subscribe to the TSCM-L mailing list visit: > > > > http://www.onelist.com/community/TSCM-L > > > > > > > > or email your subscription request to: > > > > subTSCM-L@t... > > > > =================================================== TSKS > > > > > > > > > > > > > ------------------------------------------------------------------------ > > > You have a voice mail message waiting for you at iHello.com: > > > http://click.egroups.com/1/1381/1/_/_/_/951080721/ > > > ------------------------------------------------------------------------ > > > > > > ======================================================== > > > TSCM-L Technical Security Mailing List > > > "In a multitude of counselors there is strength" > > > > > > To subscribe to the TSCM-L mailing list visit: > > > http://www.onelist.com/community/TSCM-L > > > > > > or email your subscription request to: > > > subTSCM-L@t... > > > =================================================== TSKS > > > > > > > > > > ------------------------------------------------------------------------ > > Get what you deserve with NextCard Visa! ZERO! Rates as low as > > 0.0% Intro APR, online balance transfers, Rewards Points, no > > hidden fees, and much more! Get NextCard today and get the credit > > you deserve! Apply now! Get your NextCard Visa at: > > http://click.egroups.com/1/966/1/_/_/_/951152904/ > > ------------------------------------------------------------------------ > > > > ======================================================== > > TSCM-L Technical Security Mailing List > > "In a multitude of counselors there is strength" > > > > To subscribe to the TSCM-L mailing list visit: > > http://www.onelist.com/community/TSCM-L > > > > or email your subscription request to: > > subTSCM-L@t... > > =================================================== TSKS > > -- > *Trace Carpenter > *2926 Maple Ave., Ste. 200 > *Dallas, Texas 75201 > *214.828.4520; 214.740-0112 Facsimile > *Because the fly on the wall might not be the only bug in the room.™ > > ------------------------------------------------------------------------ > Promote Health & Earn Extra Income! Join the Rainbow Light Affiliate > Program. Sell leading brands of premium nutritionals. Earn 15% > commission + 33% on commissions of those you refer to us. > http://click.egroups.com/1/1634/1/_/_/_/951156738/ > ------------------------------------------------------------------------ > > ======================================================== > TSCM-L Technical Security Mailing List > "In a multitude of counselors there is strength" > > To subscribe to the TSCM-L mailing list visit: > http://www.onelist.com/community/TSCM-L > > or email your subscription request to: > subTSCM-L@t... > =================================================== TSKS 43 From: Robert C. Motzer <1RCM@M...> Date: Mon Feb 21, 2000 5:04am Subject: Re: Digest Number 188 I just thought that I'd offer-up an idea to the breakout box project of Charles and Jay. A few months ago I also built such a box utilizing the Radio Shack 12 position rotary switches (no other reason than they were just simply easier to get). I wired-up the first 8 'clicks' (and labeled them 1-8) to dual 8 pin jacks in parallel so that pair testing can be done on this set-up for both 8 and 6 pin cords. As for the remaining 4 'clicks' - well I simply wired them up to dual standard 4 pin jacks (also paralleled) and labeled them A-D. I use this side when I'm testing POTS basic residential stuff. You'd be surprised how quickly the amount of extra knob turns saved mounts up! Just another 'Bob'. 44 From: Rocco Rosano Date: Mon Feb 21, 2000 7:10pm Subject: Re: renegade taps Dawn Star, Et Al: A security service is just like anything else; a service for hire. All security services are assumed to have some legal basis, that is, they must operate within the law. Just as a criminal element of society is entitled to legal council, so every one is permitted to have security services; to the extent that they can afford those extraordinary services which are over and above that provided to the general public. Privacy issues are probably one of the most unusual set of rights that American law has ever attempted to address. TSCM can be used in the public good, or as a service to defeat public services (law enforcement). As can any other legal oriented service you can imagine. To date, I know of no special ethics applied to the TSCM service programs. TSCM is not nearly as sophisticated and integrated into the social fabric of America as one might think. Rocco Rosano Reynoldsburg, Ohio mailto:roccorosano@a... Dawn Star wrote: > From: "Dawn Star" > > Back in the eighties I busted some of these taps, http://pd.co.la.ca.us/index.htm what does the TSCM community have to say about these activities. Do the targets have fourth and fifth amendment rights, is every citizen entitled to TSCM services as a matter of right? What say you? > > Roger > > [Non-text portions of this message have been removed] > > ------------------------------------------------------------------------ > GET A NEXTCARD VISA, in 30 seconds! Get rates as low as 0.0% > Intro or 9.9% Fixed APR and no hidden fees. Apply NOW! > http://click.egroups.com/1/911/1/_/_/_/951175653/ > ------------------------------------------------------------------------ > > ======================================================== > TSCM-L Technical Security Mailing List > "In a multitude of counselors there is strength" > > To subscribe to the TSCM-L mailing list visit: > http://www.onelist.com/community/TSCM-L > > or email your subscription request to: > subTSCM-L@t... > =================================================== TSKS 45 From: Date: Mon Feb 21, 2000 8:12pm Subject: Re: Mailing List Please remove us from your mailing list. Thnk you W A. 46 From: Date: Mon Feb 21, 2000 8:14pm Subject: Mailing List Please remove us from your mailing list. Thak you, W.A. 47 From: Date: Mon Feb 21, 2000 8:18pm Subject: Mailing List Please remove us from your mailing list. Thank you, W.A. 48 From: Date: Mon Feb 21, 2000 8:20pm Subject: Mailing List Please remove us from your mailing list. Thank you. W.A. 49 From: Date: Mon Feb 21, 2000 8:22pm Subject: Mailing list Please remove us from your mailing list. Tank you, W.A. 50 From: Date: Mon Feb 21, 2000 8:30pm Subject: Mailing LIst Please remove us from your mailing list. Thank you, W.A. 51 From: James M. Atkinson, Comm-Eng Date: Mon Feb 21, 2000 8:48pm Subject: Re: Book Review - Glenn Whidden At 12:09 PM -0500 2/12/00, Hoffman wrote: >From: "Hoffman" > > I like to write amateur book reviews and I thought >that I might share several of my book reviews with >this TSCM-L mailing list. What an outstanding idea, I would encourage your reviews > You see alot of books on countermeasures, and you >wonder if it is worth ponying up large sums of cash for >a book of questionable content. Some of Mr. Whiddens >publications are a perfect example of overpriced books. >In his defense though, I will say that Whidden is >one of the best educational writers I have ever >seen out of the thousands of books in my personal >library. In his publication, "The Ear" (grossly overpriced), >he has the amazing ability to take a moderately complex >topic (to a laymen) and write it so that anyone can >understand it. Anyway.. I'll post some of my reviews >at random within the next week. I have all of Glenns books, and I would like to point out that I feel that they are very fairly price, and very well written. Keep in mind that Glenns books are HIGHLY specialized, and as such he is entitled to sell them at a fair price. Also, I would love to see Glenn publish other titles, and cover more advanced topics. -jma =================================================================== Sed quis custodiet ipsos Custodes? =================================================================== James M. Atkinson Phone: (978) 546-3803 Granite Island Group 127 Eastern Avenue #291 http://www.tscm.com/ Gloucester, MA 01931-8008 jmatk@t... =================================================================== Copyright 2000, James M. Atkinson, All Rights Reserved 52 From: James M. Atkinson, Comm-Eng Date: Mon Feb 21, 2000 9:09pm Subject: Re: Digest Number 188 At 6:04 AM -0500 2/21/00, Robert C. Motzer wrote: >From: "Robert C. Motzer" <1RCM@M...> > > I just thought that I'd offer-up an idea to the breakout box project of >Charles and Jay. A few months ago I also built such a box utilizing the >Radio Shack 12 position rotary switches (no other reason than they were just >simply easier to get). I wired-up the first 8 'clicks' (and labeled them >1-8) to dual 8 pin jacks in parallel so that pair testing can be done on >this set-up for both 8 and 6 pin cords. As for the remaining 4 'clicks' - >well I simply wired them up to dual standard 4 pin jacks (also paralleled) >and labeled them A-D. I use this side when I'm testing POTS basic >residential stuff. You'd be surprised how quickly the amount of extra knob >turns saved mounts up! > >Just another 'Bob'. If I might suggest that you wire that 9th position for an earth ground, and the 10th for electrical ground. -jma =================================================================== Sed quis custodiet ipsos Custodes? =================================================================== James M. Atkinson Phone: (978) 546-3803 Granite Island Group 127 Eastern Avenue #291 http://www.tscm.com/ Gloucester, MA 01931-8008 jmatk@t... =================================================================== Copyright 2000, James M. Atkinson, All Rights Reserved 53 From: Jay Coote Date: Fri Feb 4, 2005 3:39pm Subject: VLF Upconvertor Query Anyone using a VLF upconvertor ahead of their 0.100-2000 MHz receiver, for carrier currents? What model are you using and are you doing anything to protect the U/C, such as a back-to-back diodes on the input....? A U/C will let you receive below the 100-Khz bottom limit of many receivers and it will also help some receivers which have less sensitivity below 1.6 MHz by design. I've been using a Ralph Burhans U/C design from Popular Communications, which appeared in the mid to late 1980's. Originally designed to allow VLF listening in a 4.0-4.5 MHz receiver for hobbyists.... Jay Coote TSCM@j... 54 From: James M. Atkinson, Comm-Eng Date: Mon Feb 21, 2000 9:45pm Subject: Re: Used surveillance, TSCM, commo equip FS At 10:00 AM -0500 2/21/00, Steve Uhrig wrote: >From: "Steve Uhrig" > >Hello list, > >We have updated our list of used equipment for sale. > >http://www.swssec.com/used.html > >Latest listing of used surveillance, countersurveillance, >communication, X-ray, direction finding/tracking, full coverage >receivers, a 3D 35mm camera, UV stuff, covert transmitters, >super high powered video transmitters, surveillance van stuff. > >And a high voltage transformer for making really big sparks. > >http://www.swssec.com/used.html > >Credit cards accepted. Also looking to buy used equipment >similar to above. Please search through your inventory and email >me a list of anything related you have to sell. > >Tks .... Steve I would encourage list members to visit the used equipment page on Steves website. His prices are really good, and he has an excellent reputation for a fair deal. -jma =================================================================== Sed quis custodiet ipsos Custodes? =================================================================== James M. Atkinson Phone: (978) 546-3803 Granite Island Group 127 Eastern Avenue #291 http://www.tscm.com/ Gloucester, MA 01931-8008 jmatk@t... =================================================================== Copyright 2000, James M. Atkinson, All Rights Reserved 55 From: Charles Patterson Date: Mon Feb 21, 2000 10:35pm Subject: Re: VLF Upconvertor Query Jay, what's at the heart of the upconvertor circuit you use? (or better yet, do you still have a schematic around?) I have a Radio Shack portable scanning shortwave radio that has a bottom limit of 150 kHz. It out performed Marty Kaiser's carrier current detector as long as the source had strong harmonics above 150. It also works at detecting the "PhoneJack" carrier current phone extensions, one I tested puts out a signal around 2.3 mHz. I was surprised to find it that high. You could also see it on the spectrum analyzer but it's a little harder to carry around. Charles cp@t... ----- Original Message ----- From: Jay Coote To: Sent: Monday, February 21, 2000 10:35 PM Subject: [TSCM-L] VLF Upconvertor Query > > From: "Jay Coote" > > Anyone using a VLF upconvertor ahead of their 0.100-2000 MHz receiver, > for carrier currents? What model are you using and are you doing anything > to protect the U/C, such as a back-to-back diodes on the input....? > > A U/C will let you receive below the 100-Khz bottom limit of many receivers and > it will also help some receivers which have less sensitivity below 1.6 MHz by design. > > I've been using a Ralph Burhans U/C design from Popular Communications, which appeared in the mid to late 1980's. Originally designed to allow VLF listening in a 4.0-4.5 MHz receiver for hobbyists.... > > Jay Coote > TSCM@j... > > > ------------------------------------------------------------------------ > Get what you deserve with NextCard Visa! ZERO! Rates as low as 0.0% > Intro or 9.9% Fixed APR, online balance transfers, Rewards Points, > no hidden fees, and much more! Get NextCard today and get the credit > you deserve! Apply now! Get your NextCard Visa at: > http://click.egroups.com/1/914/1/_/_/_/951190521/ > ------------------------------------------------------------------------ > > ======================================================== > TSCM-L Technical Security Mailing List > "In a multitude of counselors there is strength" > > To subscribe to the TSCM-L mailing list visit: > http://www.onelist.com/community/TSCM-L > > or email your subscription request to: > subTSCM-L@t... > =================================================== TSKS > 56 From: James M. Atkinson, Comm-Eng Date: Mon Feb 21, 2000 11:36pm Subject: Re: VLF Upconvertor Query At 10:38 PM -0500 2/21/00, Jay Coote wrote: >From: "Jay Coote" > >Anyone using a VLF upconvertor ahead of their 0.100-2000 MHz receiver, >for carrier currents? What model are you using and are you doing anything >to protect the U/C, such as a back-to-back diodes on the input....? > >A U/C will let you receive below the 100-Khz bottom limit of many >receivers and >it will also help some receivers which have less sensitivity below 1.6 MHz >by design. > >I've been using a Ralph Burhans U/C design from Popular Communications, >which appeared in the mid to late 1980's. Originally designed to allow >VLF listening in a 4.0-4.5 MHz receiver for hobbyists.... > >Jay Coote >TSCM@j... Two caps in series with incoming fused lines (up to 600 volts), then into a five pole high pass filter (110 dB+ attenuation at 60 Hz), then an MOV, and crossed (field replaceable) diodes. Signal then passed though an optional (external) 32 dB LNA, and run into a switched four port splitter. First port is band passed for audio from 100 Hz up to 15 kHz with a series of fifth order eliptic filters to further kill off 50/60 Hz and 2nd/3rd harmonics. tunable quad channel comb filter, followed by an AGC 0-22 dB circuit. The first port allows audio to be plucked off of a 120, 220, 240, or 600 volt AC circuit (single or dual phase). Recently added dual inputs for a reference signal which can be adjusted for phase and delay. Dumped into either an O'scope and/or Spectrum analyser. This first port may also be used as a simple TSCM audio amplifier. The second port passes 5 kHz to 500 kHz, and has a 15.734/15 kHz switched comb filter, and a dual channel tunable comb filter. Two reference signals from remote magnetic loops may be subtracted from signal under analysis which can be adjust for phase and delay. Signal then boosted by a 0-22 dB AGC circuit and dumped into either an O'scope and/or Spectrum analyser. Third port is RF above 500 kHz to 50 MHz. Six passive bandpass filters may be applied (or bypassed). Dumped directly into SA Fourth port is RF from 50 MHz to 1 GHz (practical to about 450 MHz). Six passive bandpass filters may be applied (or bypassed). Dumped directly into SA Entire contraption is handheld, with an optional external LNA. I currently prefer to use a spectrum analyser instead of a receiver for carrier current analysis, but it's a matter of personal preference. -jma =================================================================== Sed quis custodiet ipsos Custodes? =================================================================== James M. Atkinson Phone: (978) 546-3803 Granite Island Group 127 Eastern Avenue #291 http://www.tscm.com/ Gloucester, MA 01931-8008 jmatk@t... =================================================================== Copyright 2000, James M. Atkinson, All Rights Reserved 57 From: Jordan Ulery Date: Tue Feb 22, 2000 8:18am Subject: Re: renegade taps From reading the releases on this line and those of NCISS, it appears that privacy is the "hot button" issue of the next decade. TSCM may not have to deal directly with the effect of 'you can't do that it violates my privacy' complaints as much as skip tracers and PIs do, but it is a problem. I can only urge each of you to join with the local and regional PI associations and even consider joining NCISS, to keep informed. Also, do not hesitate to write, email or call your federal reps and senators to let them know that in a free society, public actions are public and that is what keeps us free. Legal and ethic behavior will go a long way to defuse the allegations that we are spies and out to get people. We may 'spy' but for legitimate and legal reasons. We are part of the business, legal and insurance communities and as such serve society at may levels. PI Magazine recently ran their annual PI Day with the theme, "Its TIme for the Truth." They are correct, its time the general population knew what we all do, in one field or another. It is either an open society, or a closed society. I, for one, like a free, open and accessible society, even if I must surrender some of my personal rights for the commonweal. Steve says we ponder weak and weary. Weary we may be, but not weak if we all work together, despite our specialty, to prevent the trampling of individual rights under the banner of 'privacy.' In the world of privacy the only thing with any rights is the government and that is wrong. Just an opinion, thank you for your consideration. Rocco Rosano wrote: > From: Rocco Rosano > > Dawn Star, Et Al: > > A security service is just like anything else; a service for hire. All security services > are assumed to have some legal basis, that is, they must operate within the law. > Just as a criminal element of society is entitled to legal council, so every one is > permitted to have security services; to the extent that they can afford those > extraordinary services which are over and above that provided to the general public. > > Privacy issues are probably one of the most unusual set of rights that American law > has ever attempted to address. TSCM can be used in the public good, or as a > service to defeat public services (law enforcement). As can any other legal oriented > service you can imagine. > > To date, I know of no special ethics applied to the TSCM service programs. > TSCM is not nearly as sophisticated and integrated into the social fabric of America > as one might think. > > Rocco Rosano > Reynoldsburg, Ohio > mailto:roccorosano@a... > > Dawn Star wrote: > > > From: "Dawn Star" > > > > Back in the eighties I busted some of these taps, http://pd.co.la.ca.us/index.htm what does the TSCM community have to say about these activities. Do the targets have fourth and fifth amendment rights, is every citizen entitled to TSCM services as a matter of right? What say you? > > > > Roger > > > > [Non-text portions of this message have been removed] > > > > ------------------------------------------------------------------------ > > GET A NEXTCARD VISA, in 30 seconds! Get rates as low as 0.0% > > Intro or 9.9% Fixed APR and no hidden fees. Apply NOW! > > http://click.egroups.com/1/911/1/_/_/_/951175653/ > > ------------------------------------------------------------------------ > > > > ======================================================== > > TSCM-L Technical Security Mailing List > > "In a multitude of counselors there is strength" > > > > To subscribe to the TSCM-L mailing list visit: > > http://www.onelist.com/community/TSCM-L > > > > or email your subscription request to: > > subTSCM-L@t... > > =================================================== TSKS > > ------------------------------------------------------------------------ > GET A NEXTCARD VISA, in 30 seconds! Get rates > as low as 0.0% Intro APR and no hidden fees. > Apply NOW! > http://click.egroups.com/1/967/1/_/_/_/951182691/ > ------------------------------------------------------------------------ > > ======================================================== > TSCM-L Technical Security Mailing List > "In a multitude of counselors there is strength" > > To subscribe to the TSCM-L mailing list visit: > http://www.onelist.com/community/TSCM-L > > or email your subscription request to: > subTSCM-L@t... > =================================================== TSKS [Non-text portions of this message have been removed] 58 From: MICROSEARCH Date: Tue Feb 22, 2000 9:06am Subject: Re: VLF Upconvertor Query Jay, I tried a VLF converter from Palomar Engineering. They always have ads in QST magazine, but I will look up the information for you if you want me to. I've used the converter with my Avcom spec analyzer, and it works very well. I prefer to use a Kaiser SCD5 because of the size and weight considerations. Glenn Whidden also make a carrier current receiver which is supposed to be outstanding. I may purchase one this year. Best regards, Rick Hofmann, CCO, CPP PI16998 MICROSEARCH - Technical Surveillance Countermeasures - Counterespionage P.O.Box 2084 - Cypress, Ca. 90630 714-952-3812 Fax:714-209-0037 ----- Original Message ----- From: Jay Coote To: Sent: February 21, 2000 9:35 PM Subject: [TSCM-L] VLF Upconvertor Query > From: "Jay Coote" > > Anyone using a VLF upconvertor ahead of their 0.100-2000 MHz receiver, > for carrier currents? What model are you using and are you doing anything > to protect the U/C, such as a back-to-back diodes on the input....? > > A U/C will let you receive below the 100-Khz bottom limit of many receivers and > it will also help some receivers which have less sensitivity below 1.6 MHz by design. > > I've been using a Ralph Burhans U/C design from Popular Communications, which appeared in the mid to late 1980's. Originally designed to allow VLF listening in a 4.0-4.5 MHz receiver for hobbyists.... > > Jay Coote > TSCM@j... > > > ------------------------------------------------------------------------ > Get what you deserve with NextCard Visa! ZERO! Rates as low as 0.0% > Intro or 9.9% Fixed APR, online balance transfers, Rewards Points, > no hidden fees, and much more! Get NextCard today and get the credit > you deserve! Apply now! Get your NextCard Visa at: > http://click.egroups.com/1/914/1/_/_/_/951190521/ > ------------------------------------------------------------------------ > > ======================================================== > TSCM-L Technical Security Mailing List > "In a multitude of counselors there is strength" > > To subscribe to the TSCM-L mailing list visit: > http://www.onelist.com/community/TSCM-L > > or email your subscription request to: > subTSCM-L@t... > =================================================== TSKS > 59 From: Dawn Star Date: Tue Feb 22, 2000 11:25am Subject: fuses The problem is not so much fuses but input cards shut down in some switches for the slightest voltage changes and many require software reset to bring them back up. Roger Jay Coote wrote: > From: "Jay Coote" > > Not that this would ever happen to be, but I know of a fellow who performed a > sweep in the corporate offices of a company at "oh-dark-thirty" in the morning. > The hapless and tired sweeper blew a fuse in the client's ESU, and I am > certain he had that sinking feeling as he realized the time and the unusual type > of the fuse. Fortunately, a thoughtful telephone technician left some spares. > > Jay Coote > > ---------- > > From: "Charles Patterson" > > > > Another problem with some of the more poorly designed electronic switches is > > that you can mess 'em up if you short out the wrong pair. In the small > > office variety, the Intertel GMX will blow it's master fuse if you short an > > extension pair, a Panasonic analog system can drop all co calls if a data > > pair is shorted! > > > > as you say, a job for the meticulous. > > > > charles [Non-text portions of this message have been removed] 60 From: Jay Coote Date: Fri Feb 4, 2005 3:39pm Subject: Re: VLF Upconvertor Query Charles & the List; Hope I still have my schematics and notes! The VLF UC was in Popular Communications in the mid- or late 1980's; by Ralph Burhans. It used an FET and IC with 4 MHz IF... (I think).... I'll have to find the specifics. Jay Coote TSCM@j... ---------- > From: "Charles Patterson" > > Jay, > > what's at the heart of the upconvertor circuit you use? (or better yet, do > you still have a schematic around?) > > I have a Radio Shack portable scanning shortwave radio that has a bottom > limit of 150 kHz. It out performed Marty Kaiser's carrier current detector > as long as the source had strong harmonics above 150. It also works at > detecting the "PhoneJack" carrier current phone extensions, one I tested > puts out a signal around 2.3 mHz. I was surprised to find it that high. > You could also see it on the spectrum analyzer but it's a little harder to > carry around. > > Charles > > cp@t... > > ----- Original Message ----- > From: Jay Coote > To: > Sent: Monday, February 21, 2000 10:35 PM > Subject: [TSCM-L] VLF Upconvertor Query > > > > > > From: "Jay Coote" > > > > Anyone using a VLF upconvertor ahead of their 0.100-2000 MHz receiver, > > for carrier currents? What model are you using and are you doing anything > > to protect the U/C, such as a back-to-back diodes on the input....? > > > > A U/C will let you receive below the 100-Khz bottom limit of many > receivers and > > it will also help some receivers which have less sensitivity below 1.6 MHz > by design. > > > > I've been using a Ralph Burhans U/C design from Popular Communications, > which appeared in the mid to late 1980's. Originally designed to allow VLF > listening in a 4.0-4.5 MHz receiver for hobbyists.... > > > > Jay Coote > > TSCM@j... > > > > > > ------------------------------------------------------------------------ > > Get what you deserve with NextCard Visa! ZERO! Rates as low as 0.0% > > Intro or 9.9% Fixed APR, online balance transfers, Rewards Points, > > no hidden fees, and much more! Get NextCard today and get the credit > > you deserve! Apply now! Get your NextCard Visa at: > > http://click.egroups.com/1/914/1/_/_/_/951190521/ > > ------------------------------------------------------------------------ > > > > ======================================================== > > TSCM-L Technical Security Mailing List > > "In a multitude of counselors there is strength" > > > > To subscribe to the TSCM-L mailing list visit: > > http://www.onelist.com/community/TSCM-L > > > > or email your subscription request to: > > subTSCM-L@t... > > =================================================== TSKS > > > > > ------------------------------------------------------------------------ > Get what you deserve with NextCard Visa! Rates as low as 2.9% > Intro or 9.9% Fixed APR, online balance transfers, Rewards Points, > no hidden fees, and much more! Get NextCard today and get the > credit you deserve! Apply now! Get your NextCard Visa at: > http://click.egroups.com/1/913/1/_/_/_/951192478/ > ------------------------------------------------------------------------ > > ======================================================== > TSCM-L Technical Security Mailing List > "In a multitude of counselors there is strength" > > To subscribe to the TSCM-L mailing list visit: > http://www.onelist.com/community/TSCM-L > > or email your subscription request to: > subTSCM-L@t... > =================================================== TSKS > >