“Released under the John F. Kennedy Assassination Records Collection Act of 1997 (44 USC 2107 Hote). DATE: 11-14-2017 AGENCY : RECORD NUMBER : RECORD SERIES : _ AGENCY FILE NUMBER: ORIGINATOR : FROM: TO: TITLE: DATE: PAGES: SUBJECTS : DOCUMENT TYPE : CLASSIFICATION : RESTRICTIONS : CURRENT STATUS : DATE OF LAST REVIEW : OPENING CRITERIA : COMMENTS : v9.1 |} DoclId: 32303052 Page 1 JFK Assassination System Identification Form Agency Information FBI 124-10283-10064 HQ 92-2914-69 Document Information FBI SAC, PG DIRECTOR, FBI 03/01/1960 5 GM, RES, REQ, MISUR, RESP PAPER, TEXTUAL DOCUMENT Unclassified 1B Redact 05/15/1998 INDEFINITE INC MEMO 11 Date: 5/28/201
ection Act of 1992 (44 USC 2107 Hote). DATE: 11-14-2017 a : ; a. ; foe SAC, Pittsburgh (92-236-Sub 2) March 10, 1960 oe JUNE | | REC 91, Director, FBI (92-2914)— i 4 of, GABRIEL MANNARINO, aka cle? ANTI-RACKETEERING Re your letter 1-25-60, and your airtel 3-1-60, concerning proposed misur coverage of subject's cottage. — The Bureau is in agreement with the conclusion previously stated in your letter dated 1-25-60, that use of twisted-pair telephone drop wire’ by - jocal telephone company precludes use of Bureau's disguised four-conductor parallel type drop wire on proposed misur instaliation. Appearance of; parallel | type drop wire in an area where twisted-pair drop wire is used exclusively would arouse curiosity of telephone company employees and possibly would also — be noticed by subject. Its use would present a definite security hazard to the . misur installation. ee zo “The Laboratory has on previous occasions attempted to have disguised four-conductor twisted-pair type drop wire manufactured for use under j conditions such as encountered in this case. It has not been possible to obtain — this type wire because of production difficulties encountered in attempting to conceal an extra wire within the thin insulation of the twisted-pair type tele- phone drop wire. . BBS geo The misur installation proposed in your airtel dated 3-1-60,is not. approved since no suitably disguised drop wire is available for microphone | egress from the cottage. 3 . NOTE: Pursuant to Bureau authority, Pittsburgh completed a survey, of subject's cottage. with recommendation that radio-microphone type equipment Be. installed. . The Laboratory recommended against this type equipment because equipment not suited for long term installation. Use of the various Microphone-Telephone type installations suggested by Pittsburgh have been ruled out because they involve telephone taps. As an alternative to these methods, Pittsburgh suggested use of disguised four-conductor telephone. drop wires,The, Laboratory has suitably disguised four-conductor, drop wire of parallel type similatyto that in use through- . out the U. S. in the Bell System and in most independent telephone nusecompanies, but has no disguised! four; conductor drop wire of twisted - ‘ ont ‘which would be required for suggested installation. When twisted- ir Tolsan Mohr — WW ___. Parsons bis Ate Ty Belmont Callahan i DeLouch 4 4 4 drop wire was.in more general use, the Laboratory attempted to oe a ag @ io f HE Cedars. ,,(continued on next page) Tamm ———— 1- Mr. -J/G. Leggett, Room 4712 Totter Bras ff A WiC. Sullivan i a \ 3} i6= damp OY kag WEF Suna 3010504 fan W Docld: 32303052 Page 2?
Released under the John F. Kennedy Assassination Records Collection Act of 1992? (44 USC 2107 Hote). DATE: 11FPSobhiey 1219°°°) C oN aa FBI i | | | | Date: 3/1/60 | { Transmit the following in (Type in plain text or code) AIRTEL “ (Priority or Method of Mailing) i — ee ee EL bow TO : DIRECTOR, FBI (92-2914) JUNE FROM : SAC, PITTSBURGH (92-236-Sub 2) RE_ : GABRIEL” }IANNARINO, aka ANTI-RACKETEERING ~ ReBuairtel, 2/10/60, Pittsburgh airtel, 2/4/60, Buairtel, 2/1/60, and Pittsburgh letter, 1/25/60 In regard to obtaining the desired misur coverage of the subject's cottage, the following proposal is submitted for the Bureau's consideration. This proposal is based on two assumptions: l. That the subject will request telephone service within the next few months. This assumption could be verified by pretext inquiry but it is not deemed discreet to do so at this time. Therefore, if this proposal is approved, it will be understood that it is possible that the necessary preparations might be wasted if the subject does not request telephone service. On the other hand, if preparations are delayed until telephone service is requested, it may well be that no opportunity will present itself to make the interior portion of the installation. 2. That it will be possible to discreetly install an appropriate disguised four-conductor drop line from the road to the subject's cottage. There are two alternatives. The first alternative would be to attempt to use available parallel type disguised line. The Kittanning Telephone Co., which would y serve the cottage, does not use this type of line. Instead, they ip 09 use a twisted-pair type of line in all instances where the Bell au lay Telephone Co., would use parallel type. If an exception was “made J in this case, it would undoubtedly make Kittanning linemen curious. 2a ih It is believed that a suitable pretext could be given them by our Me contact with the Engineering Department of the company, however. It is doubtful that the subject would notice the exception but this possibility of course exists. Another, and perhaps % more serious 3 Bureau 7 ° nn REC- 87 Tae atte 2 G Werk ittsburg Fe ; 4 . as 5 A syed eS —— een ee Special Agent in Charge yaa o- — en | "Se L Docld: 32303052 Page 3
“Released under the John F. Kennedy Assassination Records Collection Act of 1992 (44 1SC°Si07" Note}. DATE: ti-14-2017 lan ” oo Y/Y : NL PG 92-236-Sub 2 consideration, is the fact that it might prove impossible to disguise the pole-end termination of the extra pair so that it would not be obvious to a‘telephone lineman. ; The second and preferable alternative would be for the Laboratory to obtain or have made approximately 275 yards of disguised four conductor twisted-pair drop line. A’ sample of the type normally used by the Kittanning Telephone Co., is being forwarded to the | Laboratory under separate cover. They buy this wire from the Whitney-Blake Co., but also occasionally get a similar type from ; Graybar. If such disguised wire can be furnished then a more ; discreet installation could be made. There would be no possibility of the subject becoming curious and it would be possible to i appropriately disguise the pole termination of the extra pair. It ! is felt that, if necessary, the disguised twisted pair could be made slightly larger without being noticed. Because of the relatively long distance over which such a disguised drop line will have to be carried, care would be necessary to assure that the wires were large enought of offer low electrical resistance and strong enought to support themselves. It has been learned that a total of three support poles will be used between the road and the cottage (a distance of about 225 yards). . In this proposal, it is assumed that the Laboratory will be able to obtain the desired disguised twisted-pair line. It is proposed that, as soon as. adyuate security can be obtained, this office install 3 Mouse units in the manner and locations illustrated on Figure 5 of Pittsburgh letter dated 1/25/60. With the exception of the Sigma relay, limiting resistors and subject's telephone line, the leads to these Mouse units would be connected as illustrated on the sketch attached to Pittsburgh airtel dated 2/4/60. The leads for the Mouse units would, of course, eventially be connected to the extra pair in the proposed drop line. ‘Once the above portion of the installation is completed, it will be necessary to wait until the subject requests telephone service. When he does so, arrangements will be made to install the disguised drop line from pole 29 (see figure 6 of Pittsburgh letter dated 1/25/60), to the cottage. It will be hoped that the Mouse units can - be connected to the extra: pair at the same time the subject's i instrument is installed. Once these portions are completed, steps would be taken to obtain a . leased line extending from pole 29 to the central plant in the Pittsburgh Office. ~2- TN nc ech Aly enna alle pa Pt ten — tee tt tart | Doclda: 32303057 Page 4
BATE: li- 14- 2017 - oy 28 PG 92-236-Sub 2 By reversing the Mouse power supply polarity it should be possibleto obtain selective coverage with the subject's cottage. Costs of the leased line were discussed in Pittsburgh letter dated 1/25/60. If it is possible to obtain the desired disguised wire and this proposal is approved, it is requested that the Laboratory forward two additional Mouse pre-amp units and one additional power supply. ' 18) ! Docld: 32303052 Page 5