Released under the John F. 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 Docld: 323030535 Page 1 Kennedy Assassination Records Collection Act of 199? (44 USC 2107 Hote). JFK Assassination System Identification Form Agency Information FBI 124-10283-10070 HQ 7 92-2914-73 Document Information FBI ; DIRECTOR, FBI SAC, PG 12/19/1960 2 GM, RES, FEASIBILITY SURVEY, MISUR PAPER, TEXTUAL DOCUMENT Unclassified 1B Redact 05/15/1998 INDEFINITE 16 Date: 5/28/201 ©
| eased under the John fF.’ Kennedy Assassination Records CollectionjApt of 1992 (44 USC 2107°Ho “ DATE: 11-14-2017 ae yo. aes Sots : MM : | Director, FBI (92-2914) 7 JUNE A i . wi oO >; oS GABRIEL MANNARINO, aka SAC, Pittsburgh (92-236-Sub 2) . December 19, 1960 te). pt. AR. aa Pittsburgh letter dated 12-28-55, requested Bureau authority to make a survey to determine the feasibility of establishing a MISUR at a cottage owned by subject. On 12-31-59, the Bureau granted authority and a _ the results of the survey were recorded in Pittsburgh letter dated 1-25- 60. p The survey reflected that the only feasible means of éstablishing MISUR coverage at that time was to use radio-microphone techniques. By letter dated 2-1-60, the Bureau observed that a radio-microphone might be _.. feasible in this instance, but pointed out that such equipment as was then . available to the Laboratory had a relatively short life and would not be “guitable in an installation where long life was required. In subsequent ‘ correspondence, possible alternative means of obtaining coverage were -. -~ gonsidered and ruled out because of technical and physical limitations. . In view of the above, Pittsburgh will be interested to know that, subsequent to the above communications, the Laboratory has developed 7 - and constructed a completely transistorized battery (or AC) powered | . - miniature transmitter (known as the MUTT transmitter) together with { _... appropriate receiving equipment. This equipment is now ready for field ‘use. It is relatively immune to the weaknesses of older equipment (as _ described-it Bulet dated 2-1-60) and, therefore, is suitable for use in a radio<microphone installation such as originally proposed by Pittsburgh. The transmission system consists of one or more variable “~—-yeluetance microphones (approximately 7/32" by 12/32" by 19/32") and a MUTT transmitter (approximately 9/16" by 1 13/16" by 31/4")... The Efransmitter can be powered by one or more small batteries or by means sof a transistorized 117 volt AC power supply (approximately 11/16" by S 5 1/2" by 31/2"). The receiving equipment consists of either a highly portable battery powered receiver or a slightly less portable 117 volt AC _ J tl _. powered réceiver. The range of the MUTT transmitter varies with y——"transmission and reception conditions,: but is known to be as high as 1/2' ) toson ile under ideal conditions. Life of readily concealable battery supply is Sonics __pproximately, six, days. ; ! 4 (Parsons i Pye uy ' c " att my : . 3elmont : tiie asl F REC oo “OR as og ar ae ene | "HEC 23 2 - AG LY - 73 SeLoach 1- Mr. Leggett, Room 4712 Pe cee el SE alone ‘ _ . CRITE nr Cn eGuire anh. tle por og ay a) ; SN f F K \ + ; LAVAL | ‘ bey Nt orient, j Fah  CTArpee (1) Jor AW g a DEC S14 ye - Trotter . oO, we \ , ise , Lf Rwy... Sullivan # . | “He. Room . : CRESS af qram . . ee . : a . “DEC 9 "1650 ? Yekeryer unit L_| - Docld: 32303055 Page 2?