Document date 4 December 1971AIDates: machine-written — generated by an AI model from the transcripts, and it can be wrong. The scan is the source; the transcript is machine-generated from it.
FBI 164-81, Vault Part 13 p. 250 (DB Cooper-3089), Memo, dated 4 Dec 1971, serial SE 164-81-623 (as read from the transcript) — cooper.theunsolved.net/parts/Cooper-Part-13/pages/250
On 12/4/71 [REDACTED] called to suggest that there might be some possibility that a
radio receiver was in the hijacker's attache case. This could be
used in conjunction with a low frequency transmitter on the
ground - to know when to drop. He said this would put one within
a 3 mile radius from a 10,000 foot level jump on target.
However, he noted too, that any transisterized receiver in use
should be reflected in the plane instruments - so pilot should be
able to tell that such was the case (transceiver in use)
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164-81-623
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DEC 5 '71
FBI--SEATTLE
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Buy U.S. Savings Bonds Regularly on the Payroll Savings Plan