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- UNITED STATES GOVERNMENT * Memorandum DIRECTOR, FBI (157-1025) DATE: 7/23/64 Attention: FBI Attention: FBI Laboratory <2 ffm ne SAC, Birmingham (157-~352-SF-2)(P) "JUNE" ™ es RE: TECHNICAL EQUIPMENT - BAT UNIT ReBulet dated 4/23/64. ' » \ The Birmingham Office, as a result of the BAPBOMB case, SUBJECT: ? E has been keenly interested in effecting technical coverage on a number of suspects. Referenced letter authorized surveys = i for ten suspects and subsequent authority to make misur in- —— stallations was obtained on five of these ten. Surveys to date have indicated that the only feasible type of installation was either the BAT Unit or radio, i.e., MUTT Unit. Past experience and possible security problems in the use of radio, i. e., MUTT _—— Unit, precluded the feasibility of such an installation in three - of the five installations to date. Further, as the places where these installations are made and to be made in the future are v2 ¢ j tainly private homes, there is no egress wiring and no known 2 secure way to obtain any at the present time except utilizing the existing telephone lines. In view of this, the BAT Unit has been installed in three instances, utilizing the telephone line of the resident, and has proved to be working in a highly satisfactory manner. This matter is deemed worthy of being brought to the attention of the Bureau, especially the Electronics Section of the Laboratory, in view of the very probable likelihood i that additional units of this type will be requested for future installation. G/- Bureau (Registered Mail) - Birmingham 5 167. 1es- 1090 br. REC- 44 — Be 3