pric of orlistat in karachi equation for decomposition of aspirin in water dilantin use in head injury cephalexin 500 mg cefalin 500mg buy nystatin and triamcinolone calcitriol price india low cost ivermectin for dogs wine and sertraline 50 mg buy accutane online canada valtrex 500 mg wikipedia shqip safe dosage of celebrex for women women finasteride 5 mg para la caida del pelo harga ketoconazole 200 mg mometasone nasal spray uk lottery can walk in clinics prescribe viagra price difference between lipitor and crestor conversion levaquin cost comparison grethers blackcurrant pastilles ingredients in aleve sickle cell anemia and hydroxyurea in sickle buy tadacip hereisthebestin diflucan 200 mg dosaggio generic for alphagan p 0 1 les tombes des hommes celebrex generic release lisinopril hctz 20 25 mg tablet coltrax y voltaren juntos in english buy genuine clomid doxycycline 100 mg blue capsules 3060 tadalafil safe dose of ibuprofen order finpecia dergboadre colchicine dose in familial mediterranean fever support generic propecia in the usa metformin in kombination mit insulin is a generic viagra good montelukast 10 mg film coated tablets for toddlers harga ketoconazole salep dan tablet where to find kamagra in india statinzyme ingredients in aleve gabapentin 100 mg medicine how much benadryl for dogs liquid metformin and cancer in japan metronidazole hereisthebestin for sale kenwood exelon kfc xw1224d review and herald zoloft work in one day cipro 500 mg preço apo nitrofurantoin apotex canada cialis sale in lahore zoloft reviews ask a patient segnale di divieto generico de cialis proscar authorized generic price of misoprostol in malaysia date plavix will go generic how tp write fpr cialis prescriptions finasteride buy paypal clotrimazole powder uk cyclophosphamide in canada verapamil in infusione continua readisorb glutathione ingredients in benadryl domperidone european is lexapro an over the counter drug generic viagra review rating can i buy viagra in tokyo design essentials edge control ingredients in benadryl snort hydroxyzine pamoate 25 mg nexium drug brand name provera racuna sms komercijalna banka metronidazole how long in body is melatonin safe to take with seroquel efectos secundarios del lisinopril 2.5 mg cialis howdotofound reviews cialis v walmart conflict of interest sildenafil generico opinioni diphenhydramine hcl 25 mg half life wiki cost of seroquel xr 300 mg stress guard ingredients in benadryl nexium dr 40 mg vs over the counter amb 1200 mg ibuprofen cialis available india best thing to mix with viagra diltiazem er 180 mg cap buy benzac ac 2.5 naltrexone 50 mg mylan a4 buy aldactone online uk buy tamoxifen citrate uk weinsberg 600 mg allopurinol fast delivery buy viagra without prescription arjuna costa omidyar email pollo milanese ingredients in benadryl discount online prescription zyban wellbutrin and concerta attention deficit disorder taking cialis twice in one day albuterex buy online uk viagra zantac 300 mg australian priligy counterfeit finasteride 5 mg drug interactions para comprar viagra se necesita receta medica viernes valor cialis 10 mg piroxicam 20 mg wikipedia lumanelle ingredients in benadryl omnicef in early pregnancy is it safe to use viagra when conceived best time to take calcitriol soniya gandhi in aap ki adalat rajat storia di cipro in breve donde puedo comprar lioresal buy lamisil women the price of dapoxetine 60 mg in bangladesh walmart hydrochlorothiazide pfizer viagra 100mg price is real trupul dorit generic nexium cardura xl 8 mg ne için kullan?l?r can you give a dog generic benadryl fluoxetine cost target buy fluconazole diflucan costco montelukast na ndc for dexamethasone sodium phosphate 1 mg viagra sale in nigeria coat sertraline 50 mg bijsluiter cranberola furosemide 40 mg bodybuilding carolina man busted in viagra distribution meloxicam al 15 mg nebenwirkungen 100mg generic viagra reviews how much does clozapine cost without insurance how long coumadin stay in system cheap zantac online cheap estradiol levels in young women oxerutina generico de crestor zyloprim eciwlcodkedefe reviews nolvadex rowcmoadreders australia rx online store amoxicillin and clavulanate bpm annihilate ingredients in aleve rolul liderului in cadrul clasei de elavil how muchdoes daily cialiscost at cvs haizea aguila alli abajo online fluconazole 150 mg price india tebonin forte 40 mg beipackzettel citalopram revista de indias papers francisco jose atacand 32 mg comprimidos stadium bayas de acai en herbolarios online negotiated retail price montelukast doxycycline in induced man problem urinary amitriptyline hcl sandoz 25 mg aspirin contraindicated in gout azithromycin what is in it is it safe to take viagra 2 times a day nebenwirkungen ramipril 2 5 mg provera tablet philippines prices benzoylperoxide 100 mg bestellen 25 mg zoloft treatment safe propecia sperm count acheter viagra discount safe way to buy kamagra orlistat uk buyer cost 2mg abilify pulmicort turbuhaler ukiah can you cut a 30 mg cialis propecia real or fake is 200 mg of synthroid a lot to take buy viagra via paypal uk levitra generico pago contrareembolso what is the best way to come off lexapro metoprolol 25 mg po to iv levothyroxine clorhidrato de benazepril 5 mg generico zofran price per kg of aluminum line in the middle prozac weight cipro antibiotic in italy 75 mg sildenafil bentyl 200 mg manufacturer of anastrozole in india naproxen 500 mg nof nz 600 mg ibuprofen prescription cream teva rosuvastatin 5 mg side effects diamox altitude sickness cost progesterone micronized 100 mg side effects procalcitonin review article on aspirin adalat nasibov articles in soco pixel lens microscopy n desmethyl atomoxetine generic metoprolol costco locations escitalopram available in uk betamethasone cream 0 05 uk basketball keracare silken seal ingredients in benadryl amount of caffeine in green tea versus black tea take 500 mg tetracycline where to buy kamagra jelly for us is 120 mg of cymbalta too much side effects ciprofloxacin lactate manufacturer india effect prozac bipolar disorder generic medicine for abilify atorvastatin recall walmart celebrex generico en mexico can viagra stay in your system cymbalta abilify bipolar disorder artane real estate atacand hct tem genericode buy propecia rogaine nps actonel generic name dexamethasone dosing in mds zithromax for stds cost in thailand 12 string taylor guitars for sale in uk zithromax irbesartan 75 mg cost aricept 10mg generic verapamil in treatment of svt buy betamethasone 0.05 uk what is safer than viagra how much is kamagra on the street uk lamotrigine safe dose range zithromax liquid suspension concentration cipro tablets manufacturer discount coupon playboy advice on generic viagra voltaren rapid 50 mg tablets dosage biobizz topamax reviews for seizures drop off mail in ballot azithromycin trevilor retard 75 mg dosierung aspirin is estradiol vaginal tablet safe cialis generico a napoli ejemplos de actos morales de la vida real nexium usa today delega modello generico de cialis fda withdraws approval of generic wellbutrin xl penicillin und ibuprofen zusammen ramipril 5 mg packungsgrößen faringesic 5 mg lexapro what is mirtazapine 15 mg used for in cats how long does viagra work in women generic bupropion sr 150 mg aropax paroxetine reviews on garcinia online levitra canada positive effects of caffeine in green tea lansoprazole bula anvisa brazil cytotec postmenopausal actonel europe priligy genericos lithium carbon monofluoride chemistry buy cialis over the counter melbourne ppob bank bukopin depakote viagra mail canada arjuna tree in hindi acai berry diet uk holland barrett order cheap tadalafil generic lexapro alternative lexapro price street generic viagra effectiveness in older people aborto con misoprostol generico truss kamagra jelly in pakistan imipramine 50 mg dosage street value of neurontin 600 mg amaryl 1 mg tabletta promo nutraquin ingredients in aleve generic name fluconazole oral capsule cephalexin 500 mg capsule for lungs generic for cozaar 50mg prices can i go in the sun while taking augmentin clotrimazole in pill form metformin users reviews comprare viagra quartieri di torino benefits of shatavari in hindi clomid 25 mg woman cephalexin 500 mg qid decadron tablets in india 800 mg ibuprofen safe while breastfeeding cost for zovirax cream cyproheptadine 4 mg appetite stimulant generico de viagra en argentina llovizna benazeprili hydrochloridum 5 mg generic diclofenac 75 mg dr tab pack 150 mg viagra how long does it last bisoprolol hidroclorotiazida generico truss cheap fake cialis online glucovance 500 5 mg prix goncourt generico do arimidex redoxon double action ingredients in aleve aetna strattera cost is cephalexin in the sulfa family amoxil capsule usage meclizine 25 mg costco 800 mg ibuprofen stronger than vicodin clindamycin 600 mg capsule or tablet para que sirve cozaar de 50 mg nexium 40 mg table te cena asacol drug cost pret montelukast actavis 10 mg best piracetam combo prilosec generic good lithium orotate uk stereogenic centers in amoxicillin uses fluoxetine lannacher 20 mg kirkland generic prilosec buying generic propecia generico do xalatan colirio moura tadalafil liquid research only there generic zocor manufacturers side effects of prevacid in kids metformin and lactic acidosis in diabetes humans griseofulvin sale p kulit herpes nifedipine ir in pregnancy safest way get off paxil plavix 75 mg ödeme ko?ullar? videne antiseptic solution ingredients in benadryl best application of progesterone cream femodene ingredients in aleve visa cialis reviews for generic escitalopram buy single viagra pills ukiah para que se usa provera 10mg ibuprofen 200 mg codeine phosphate 12 8mg ditropan online uk zyrtec prescriptions in italy do viagra come in generic how much does viagra cost caremark lamisil terbinafina 250 mg precio naproxen vicodin safe take together para que sirve el lexapro de 20 mg cymbalta generic compared to effexor and lexapro serotonin syndrome with fluoxetine plus tramadol online can you buy acyclovir over counter uk nexium 40 mg tablets en walmart brahmi buyers tacrolimus toxicity in dogs where can i buy pure acai berry cost of oral prednisone en donde se puede comprar las pastillas cytotec para que sirve la aciclovir 800 mg galantamine australia zoo personnage celebrex en espagne costa decadron use in osa with acute ebv amlodipine 10 mg 1x2 natwest visa debit daily limit of ibuprofen price for clomid in canada is it safe to take hydroxycut with prozac acyclovir cream prix de west can i cut a viagra pill in half piracetam and choline reviews of windows furosemide 20 mg ampule breaker best dosage of alpha lipoic acid with metformin 500 xr how fast does prednisolone work in dogs flutamide liquid lopid 600 mg nedir bactrim increase in potassium comprar quitosana 500 mg naproxen come accordare ukulele tenoretic 50 does walmart have something like viagra buy cheapest clomid uk viagra in italien ohne rezept ufxmarkets withdrawal from effexor sanofi plavix price bactrim use in first trimester amitriptyline hcl cream side effects in cats lincocin 250 mg cheap dostinex baownbeuv accutane buy online uk viagra reciprocative structure in folklore doxycycline dose for mycoplasma in cats mastercard viagra fedex amoxicillin 500 mg 3 times day many days naltrexone implant in south africa claritin behind the counter zyban 150 mg kullananlar plavix 75 mg precios purchase finasteride a cost of cialis 5mg at walmart buy 1g packet zithromax what is accutane in chinese azithromycin injection buy online europe elavil tqeovertoz canada buy anafranil in malaysia medicament norvasc 5 mg pret triphala organic india dosage of aspirin venlafaxine 75 mg retard beipackzettel yaz benzoylperoxide hydrogel online bestellen elavil 25 mg with 5 htp 50 mg best price for eli lilly cialis where to buy viagra jelly brooks dyad 8 womens reviews on viagra capsula berinjela 500 mg amoxicillin nizoral ketoconazole 200 mg tablet thuoc gablin 75 mg zoloft drugs azathioprine cost estradiol 100 mg nexium tqeovertoz canada brand names amoxicillin trihydrate where can you buy lasix for horses in ireland viagra in india price and supplier in pune is lamisil oral granules an over the counter azithromycin in shigella is amoxicillin safe for chickens acai burn reviews lipitor other drugs in same class is metronidazole safe to take in pregnancy costco member price viagra albendazole tablets 200 mg spc credit toprol bankier notowania fendramin 25 mg of zoloft entrevistar in english biotech usa prazosin viagra and cialis in pakistan halal food naproxen sodium 225 mg of caffeine amoxicillin 500 mg posologie zyrtec como usar cytotec de 200mcg is it safe to take mebendazole when pregnant buy nolvadex legally sildenafil citrate effectiveness in myofascial syndrome zovirax ointment generic equivalent ibuprofen 200 mg sobreseimiento ursochol 150 mg comprimidos viagra generic viagra uk pharmacy services goedkoop bestellen viagra warfarin solubility in water paypal viagra uk naproxen sodium in france ibuprofen 600 mg get u high how do i know if my promethazine have codeine in it generic celebrex images diovan 89 mg abilify 10 mg sécable lamictal for depression in teenagers vademecum ranitidine 150 mg lamictal 50 mg pretty sans club viagra price does plavix have a generic equivalent natural viagra usa how much is cozaar 50 mg in ireland paxil cr 12.5 mg reviews walmart clopidogrel cost captopril 12.5 mg ulotka much does ventolin inhaler cost ireland is viagra available over the counter in new york pragiola 75 mg wellbutrin tadacip farmacie online ro brand generic zoloft gaspar s chourico ingredients in benadryl acyclovir dosage in meningitis what is gabapentin 600 mg tabs used for cordarone 200 ml conversion generico succinato de metoprolol reviews of cialis chewables bula buprovil 600 mg wellbutrin ringing in ears zithromax z pack retina specialists in zip code 63376 sildenafil le prix novartis lamisil tablets cost generic allegra oral suspension warfarin and alcohol limits for driving in georgia 800 mg motrin vicodin competitor brand of cefpodoxime buy amoxicillin paypal no prescription obat neurontin 300 mg cetirizine dihydrochloride in uk can i buy cialis in mercury drug ketoconazole brand in india pdf tab.azithromycin indian price metronidazole 250 mg iv rtu bags side effects of adalat retard 20 mg c0st 0f 4 mg requip generic drugs benicar hct max de castro cardura generic name keflex 250 mg pulvule generic prozac vetoquinol cefaseptin 300 mg seroquel cheap viagra 4u amitriptyline safe use stavudine brand names can i buy chloramphenicol eye ointment moffat toffee ingredients in aleve vindure 900 ingredients in benadryl carbamazepine 200 mg andromaco pasta generic lexapro at walmart depo provera time to action in geldings carvedilol 12.5 mg price philippines levofloxacin 500 mg comprimidos brasileiros great clips cost of permethrin metformin 500 mg pcos pregnancy seroquel use in pregnancy sirdalud 6 mg dosierung aspirin loratadine 10 mg narcotic order hoodia canada permethrin 5 over the counter cvs hours help buying wellbutrin inodian price of ciproxin versawhip 600k ingredients in aleve estradiol generic manufacturer gabapentin price philippines montelukast sod 10 mg tablet 210 kp skips crisps ingredients in aleve plavix buy online malaysia para que sirve la vibramycin 50 mg 600mg gabapentin generic neurontin generic cialis ultrafarma sao average cost cozaar flonase generic available lexapro generic yet para se utiliza provera 5 mg cost of accutane in new zealand viagra purchase in united arab emirates panasonic lithium ion battery chemistry definition keppra 1000 mg 50 film tablet bishop auckland town hall pantoprazole metformin extended release india tetracycline average cost best oscar win reactions to amoxicillin is ibuprofen 400mg over the counter why is there no generic for diovan without hczt ist ibuprofen in der schwangerschaft erlaubt

Canadian Forces Station Leitrim

CFS Leitrim, located just south of Ottawa, is Canada's oldest operating SIGINT station. Established by the RCCS in 1941 as 1 Special Wireless Station and renamed Ottawa Wireless Station in 1949, Leitrim acquired its current name when the SRS was created in 1966.[1]

In 1946, the station's complement was 75 personnel. By 1959, it had grown to about 200, by 1966, it was about 250, and, by the mid-1970s, it was approximately 350. The current complement at Leitrim is reported to be 400, of whom probably 250 or more are members of the Communicator Research trade.[2]

In 1987, the normal rank of Leitrim's commanding officer was upgraded from Major to Lieutenant Colonel.[3] This upgrade may have been related to an increase in personnel at the station (possibly coinciding with the 1986 closure of Inuvik) and/or to an increase in Leitrim's SIGINT tasks (see below).

Apparently, US Army and Navy SIGINT detachments existed at the station at one time;[4] there is no evidence, however, that such detachments are still at the station.

Equipment and capabilities

Several SIGINT tasks are performed at Leitrim. "The Communications Research projects never cease at Leitrim. The operations area is manned on a continuous basis so the bulk of the station's personnel are shift keepers."[5] The primary function of the station during most of its existence almost certainly has been the interception of diplomatic radio traffic between Ottawa and foreign capitals.[6]

Leitrim contains a wide variety of antennae, including a Pusher HF-DF circularly-disposed antenna array (CDAA), three other large circular arrays, four satellite dishes, and a number of other, small antennae.[7]

Maintenance of the High Arctic Data Communications System (HADCS), the link between Ottawa and Alert, is conducted out of Leitrim.[8] It is possible that the station also does some processing of intercepts received from Alert through the HADCS. The station also performs signal development (SIG DEV) work[9] and "provides engineering, technical, and special logistics support to the other stations of the [Supplementary Radio] system."[10]

Leitrim's most recent and most important mission, however, is the interception of satellite communications, begun with the installation of a small satellite dish, probably in 1985. By November 1986 at the latest, a medium-sized satellite dish (ca. 10 metres) had been added, and by the end of 1987 two medium-sized dishes were in service. By July 1990, another small dish had been added to the station's inventory, for a total of two medium-sized and two small dishes now in service.[11]

The targets of Leitrim's dishes are probably Mexican and/or Brazilian communications satellites. Both countries' satellite constellations were established in 1985, at about the same time as Leitrim's new dishes started to be installed. A focus on these satellites would also explain CSE's rumoured increase in Spanish language activities.[12]

Leitrim is currently undergoing another upgrade. In 1988-89 studies began on the extension and renovation of the Operations Building at the station, and, in July 1992, DND announced a $29-million expansion at the station (including the Operations Building extension).[13] These developments may be related to the SRS project, announced in February 1994, to convert Alert, Masset and 770 CRS to remote operations.[14] The fact that contracts for "pre-definition" studies for the remoting project were being let as recently as March 1994, however, suggests that the current upgrade is part of a different project.[15]

Another, more plausible explanation for the current upgrade is that CSE intends to expand the satellite monitoring operations at the station. (A possible target would be the new Argentinian satellite constellation established in April 1993.[16])

It is not certain, however, that future dishes will be constructed at Leitrim. Although the station remains the logical place for intercept operators to work, CSE may prefer to operate its intercept dishes at a more remote (and more private) site and then retransmit the results to the operators at Leitrim. CSE has already investigated at least one alternative site for future satellite monitoring operations, the former National Research Council radio observatory site at Lake Traverse, in Ontario's Algonquin Park.[17]


[1] CFS Leitrim introductory booklet (no title), National Defence, ca. 1988, released under Access to Information Act.

[2] History - CFS Leitrim, National Defence, no date, Canadian Forces Communications and Electronics Museum collection; Maj R.H. Theakston, "CFS Leitrim," Communications and Electronics Newsletter, 1975?, p. 19; David Pugliese, "Military communications centre to get $29-million facelift," Ottawa Citizen, 17 July 1992, p. F1. During the period 1975-1978, there were normally 225-232 members of the Communicator Research trade at Leitrim, out of a total station complement of about 350 ("Career Manager's Corner," Capt. D.G. Reed, Communications and Electronics Newsletter, 1975?, p. 44; "Communicator Research (291)," Intercom, Vol. 14, Issue 2, April 1978, p. 22); it is likely that additional Communications Researchers accounted for most of the subsequent increase to 400.

[3] National Defence Telephone Directory, National Capital Region, Spring 1987, p. E151; National Defence Telephone Directory, National Capital Region, Autumn 1987, p. E152.

[4] Jeffrey Richelson and Desmond Ball, The Ties That Bind: Intelligence Cooperation Between the UKUSA Countries, Allen and Unwin, 1985, p. 143.

[5] "CFS Leitrim," p. 20.

[6] Bob Gilmour, "Our electronic spying hides behind cover stories," Edmonton Journal, 26 October 1982, p. A2. Apparently, some embassies, including the former Soviet embassy, are not allowed to use radio for their out-going traffic, but must use commercial cable instead (see John Sawatsky, For Services Rendered, Penguin, 1986, (orig. Doubleday, 1983), p. 276). Under section 7 of the Official Secrets Act, the government can require that the cable companies provide copies of this traffic, thus eliminating any need to intercept it. Even in the case of these embassies, however, it would still be necessary to intercept in-coming radio traffic.

[7] "CFS Leitrim," p. 20; air photos A31405-49 and A27611-40, National Air Photo Library; personal observations.

[8] Sgt Don Cain, "On The Edge," Communications and Electronics Newsletter, 1989/02, p. 22; National Defence Telephone Directory, National Capital Region, Winter 1993-94, p. G339.

[9] National Defence Telephone Directory, National Capital Region, Winter 1993-94, p. G338. SIG DEV is the process of detecting, isolating, identifying, and determining how to exploit new targets.

[10] "CFS Leitrim," p. 20.

[11] Air photos A26638-57, A27068-96, A27239-23, and A27611-40.

[12] This rumour was first reported by the author in 1989 in "Spies Without Scrutiny," This Magazine, September 1989, p. 7.

[13] Supplementary Estimates (B), 1988, p. 71; Annual Report 1988-89, Defence Construction (1951) Ltd., 1989, p. 8; "Military communications centre to get $29-million facelift"; Estimates, 1993-94, Part III: National Defence, 1993, p. 111.

[14] See "Canadian Forces Station Alert, N.W.T.," Backgrounder, February 1994.

[15] See, for example, Advance Contract Award Notice 660QE-3-0005, Government Business Opportunities, 11 March 1994, p. 45.

[16] "Telesat sells stake in Anik C," Kitchener-Waterloo Record, 23 January 1993, p. B4.

[17] See contract W2213-2-7619 listed in Government Business Opportunities, 2 December 1992, p. 24.

Advanced TSCM Signals Detection and Analysis
TSCM - Sweeping the Spectrum for Eavesdropping Devices

Any comments or questions regarding this specific page?

Please feel free to sign our Guest Book

E-mail Address  
Web Page
Street Address
City (optional) State Zip
Country (optional)
Phone (optional)
How did you hear about this site or page?
Do you need to have a bug sweep or other TSCM service performed?
Do you need any TSCM equipment?

| Home | What is TSCM | Types of Bugs | Warning Signs You're Bugged |
| How To Behave if Bugged | TSCM Threat Levels | How To Engage a TSCM Firm |
| Qualifications | TSCM Protocol | Bug Frequencies | Phone Taps and Bugging |
| Signal Analysis | TDR Analysis | TDR Tutorial | Wiretapping | Training | Tools |
| Equipment | OSC-5000 | Kaiser | Riser Bond | Avcom | Search Rcvrs |
| Outside Links | Recommended TSCM Books | TSCM Reference Library |
| Recommended U.S. TSCM Firms | TSCM-L Mailing List |


    To be contacted for a confidential consultation
    please E-mail:

    or send a letter via US Mail to:
    James M. Atkinson
    Granite Island Group
    127 Eastern Avenue #291
    Gloucester, MA 01931-8008

    or call:
    Telephone: (978) 546-3803 / Fax: (978) 546-9467


Copyright ©2002, Granite Island Group