◆ SpookStack

OQ. : CODE @ TELETYPE ® IMMEDIATE | - 2/14/74 Soe pa Mr. Gebhardt A ' 4 - Mr. White TO SAC SAN FRANCISCO (7-855) To Me RUA Mille FROM DIRECTOR FBI (1-15200) . L- Mr. Killion FOLLOWING IS PRELIMINARY RESULTS OF RADIO ENGINEERING EXAMINATION OF CASSETTE TAPE RECEIVED AT RADIO STATION KPFA, BERKELEY, | . EXAMINATION OF VOICE SPECTROGRAMS OF MALE VOICE AT BEGINNING OF TAPE AND MALE VOICE AT END OF TAPE INDICATES THEY ARE PROBABLY NOT THE SAME SPEAKER, NOISE DUE TO \ ~ MOVEMENT OF MICROPHONE AND RAPID STOP - START C Q\ CHARACTERISTICS OF THE RECORDING SUGGEST THAT THE MICROPHONE USED COULD BE OF HAND-HELD TYPE WITH REMOTE "ON" - "OFF" SWITCH ON SIDE OF MIKE. THESE MICROPHONES ARE COMMONLY AVAILABLE ACCESSORIES FOR DICTATION TYPE CASSETTE RECORDERS. | Ae LO SAK: Bes he Sees) wh — rea F389 4 Exe Att — FEDERAL BUREAU OF INVESTOATION. “Pking on Smt COMMUNICATIONS SECTION ' tent YBOUFLONL DAlzton iS 3 rep 141974 ae inspection Em GAB), Oe TELETYPE - Legel Coun, song : nPREIC TELETYPE UNIT ry re ee ee 7 Re ai aon BSED re ~ wwe yer SO _= ~ Sm ee enna a +