14-00000 soe % ¢ 4 mt) ; ~ rae Whee” a 5 ~ . menue an ”* ° ay! i a - ewe So Neen earn set : aw gor’ ey Ase . GN gy Wie om veer a) ’ Ae ra . (OhLEon RSCIASSIFY ACCOEDING . DATA ADDED BELOW): Vi Poe tek, i? wie CPA. sPews AGERSY CIA REQUEST FOR EVALUATION: ate Tnited States Information dcones “Ad : 4°. OF . . . ye 7 Dissees, . , oa 2isTRis8., =P Setgher TSSQ - Pause e os-3 §2,3Lh opt yoohte? oy = “pero | , Kountry (" /véxtco/fhina Sawece eN-520 . wed £20 Subject Politica, Leftist Seni-Monthly Macazing . . . fvallLatse: Please conpiete TAGS eval aglicn within Qyday s- “of receipt of recucst. need for completion withia tris time is MAMXKGstangard, incicate cmaises oy °x.* if item marked is printes in italics, please explain under a *Evatuator’s Corments.® xormally, cos ame § in each appropriate section. otherwise, pleasescover eacn of these rea > “7 +. gf. aspects In your Comments. for Curtnec ares of use of tais form, see reverse. :<, LP SRQSECT GF. THIS REPORT 18 OF- COLLECTOR'S COMMENTS AND QUESTIONS me oy EC Lot Ww? 2. wonceatE \ Cer ORT ARE 85 . . . - 2 oN 4 7 ReLation te . . : pode Ltttae } eum nee 7 - . : INFORMATION IN THIS REPORT: earner - . : a 2. SUGSTANT?ALLY : | 4. weGhigrary . : Z ie Tp accuracy. EVALUATORS COMMENTS ANO FOLLOW-UP QUEST IONS , ' SUaSTANTIALLY TRUE . ; . WARM _ : 3. Doube ful . ; ; 3. CANNOT BE JUDGED. SLE OD. <P RELATION TO OTHER INFORMATION. : ¥. USEFUL FOR CONFIRMATION 1 2. USEFUL FOR Now ERP ORMATION ead nN 3. Sufficsentiy kaoun eave t | @. aT PRESENT BE LATA OTHER infoemaTign {  7O 3UOGE ACCURACY Of USEFULNESS i t ii 3.Confisera with previous anfarmet ine - . ” $ Appears to be fabricarson - . . - - E P USEFULNESS BOCLD HAVE BEEN GACATE® oilers 1. sore deradé ee Leas detail, sore suanary 3. Leas feagrentary appraaen ; nego encarta 6. Better organizat son Getter sheorvation of betler gapiods fateen af aource, of both. » ($TATEO tm Comment) 4 Ou COLLECTION NEEOS j “ w fe “4 a m wfe 3 ofa aa) ule a ow |e ele ard ola 2 Et he pin Zia “+h rs vie = * o “ * ~ os and es . i . Tuy bf WOUR REQGUIRAMCYT §G CITES.) BLeCaAP e , i - © Pgariseege ate . : : ? . . a ? FLLY. REQUIBEMENT CAN BE Caosis. i = . \ ' aerate terete s ; partaaily. Portsoa of regquiresest i : i , ; t aey be closed. H . . } ~ ete rn . ne an ‘ . f PaRTIALLY, BLT ALC COMmTIHULs. one cane ae ce J . « tte eeeeee eee REGLIGIONY ; def avast? 19 imegavaal TO vou. arate e¢* a f PSATING OCES NOT MEET Miniwyw REEDS, am’ . > . Vou wave FILES RO BE QUIOT MET ED 1 Ge S644 PRESERY A BEGUM LRT Foie, . . . a ‘ . — —— : Do phe Be Be P_WEE 9-2 -RO Tw ARERR TEBE Gy BENT ” . . _ see Wi eent sea ca BEPORTING. } .! & earner ma terete snes tS ae ee ene mtn women ema i ] é c  owsae : : } : , pane ePlesee print} ~ tC oer Sag OF ; J FZ & MRL KY eterna SAA fit fa bo aya tescusres | {ERS Cer FRG 4 U0 A | x 5975S {eaten weno ee een wot eons + wate a et ore : . oats Bewut Sh PELL IBTS z : (se ys et E
Het sit ity ate pats, thy : Be 10 August 1960 MEMORANDUM FOR: | Chief, WH/3 : | SUBJECt: , GW Signals on Telephone Tap . >: . x REFERENCE: HMMA-14977, 18 May 1960 ; 1, Atechnical analysis of referonceltap indicates that the CW Morse signals probably were picked up incidental to the primary tap and did not actually occur on Line #2, This is borne out both from a technical standpoint (signal to noise ratio, oxtraneous CW Sisnals, etc,) as well as from the context of the messages theme selves, The latter, as will be noted in the attached tranacript, primarily concern arrivais and departures of what appear to be small maritime vessels, The two radio calls mentioned, {,@. "ABRB2" and "XBRP", are listed in the International Call Sign Book as follows: XBRB = Vera Cruz\19-10N, 96-151) XBRP - Pichilingue (24-12N, 110-20 Ww) : The originating station in this case was Pichilingus. Hoody dy aakies ; . ° Assurnegthe re is some good reason why a port. authority on the west coast of Mexico would be sending traffic of . this nature to an cast coast port, However, jy zh how these 6. f vical Y particular signals happened to be picked up on*Sam Brooks! line : is open to conjecture, It is our guess that it probably was due to one of the following reasons: a, A radio transmitter may be situated near the tap and is serving as a relay station between Pichilingue and Vera Cruz, If this is the case it may be yiving off strong radio frequency signals which possibly are being rectified by the tap itself,
14-00000 BA oe i 39 Pe ex rs a Zo b. The equipment used in conjunction with the tap - may be serving as a poor radio receivar, using the telephone ‘Line as an antenna, . c. The CW signals possibly are being picked up inductively, i.e. from another phone line which is in close proximity to Line 2. This theory seems-unlikely, however, since the transmission of CW signals from one coast to the other via telephone lines would be a slow and impractical procedure, he ajar ves 3. From ‘tho standpoint of technical interest, we would appreciate being advised if and when the Station is able to sub- stantiate any of the above conjectures. Sie are, [etne! to furnish additional analysis an? transcripts should similar signals be noted in the future, s m f ’ e WILLIAM K, HARVEY Chief, FI/ Division D ¢ 4 Attachment: Transcript of CW Signals Ae 4 - a _ ae
14-00000 t. od A wa! “ry ra -: cnt TRANSCRIPT OF CW SIGNALS AGUA SABORA, SAN APARTO H AUXILIAN E H 608A TRASEGO we (FADE)... COMBUSTIBLE FUERA SERVICIO POR TENER’ DESGAUSTABOS SU HERGRANS... (FADE) «+. ESSAQ wee SF 16/6 RACOM ... (FADE) MAUPOME RUIZ QUATRO BT RECIBI CERO QUINCENTA PRIMERO MARZO TANPRONTO SE, MIPOBER CUANDO (FADE) INDICAS AVIESARETE SALIMOS OS AFECTUOSO ICOPCOASCOQU.., LOPEZ AR AR NIL XBRBZ DE XBRP QRK IMI ZVP 36 K XBRB2 DE XBRP BT MIENTRAS ZNN QRX 3 AR (UNREADABLE) DE CABO TAJUA MARZO 15, ENTRADA SL "HELENA J" CON CHANLAN "ESTRELLA" RUTA ESPECIAL 1] ~FRONTFAL- "JUANITA DOS" RUTA ESPECIAL 13 <FRONTFAL- "PPX (OR PEGX) XX III" CON CHALAN | "PPX (OR PEGX) 559" TUXLAD ( OR TOXLAD) = SALIDAS "PPX (OR PEGX) XX Ml" TUXLAD ( OR TOXLAD} L.A NUFTO BT MIGUEL BATALIA HR MFCANN NRS.8 CUITZ F 49 WUPFD 12.45 BT CAP NAVCG LORRZO DE LANEON ALVAREZA ~ JEFE DEPTO FAROS MAIMIF BT MARINA 4354/1580 SU ATENTO RAD N2 FU [IV 338 14179 FARIADO 8 ACX ALL PERMITOME INFORMALE