Serial 2303

FBI LABORATORY
FEDERAL BUREAU OF INVESTIGATION
WASHINGTON, D.C. 20535

September 17, 1979

To: SAC, San Francisco (89-250)
From: Director, FBI
Re: RYMUR

Examination requested by: SAC, San Francisco
Reference: Airtel dated June 13, 1979
Examination requested: Enhancement – Duplication
FBI file no: 89-4286
Lab. No.: 90619115 E TV

Remarks:

Enclosures (2) (2 Laboratory Reports)

[Page 2]

Report of the
FBI LABORATORY
FEDERAL BUREAU OF INVESTIGATION
WASHINGTON, D.C. 20535

September 17, 1979

To: SAC, San Francisco (89-250)
Re: RYMUR
FBI file no: 89-4286
Lab. No.: 90619115 E TV

Specimens received: June 15, 1979

Q42 One 7-inch reel of .25-inch wide magnetic tape marked in part “Last Hour”

Also submitted:

One 7-inch reel of .25-inch wide magnetic tape marked in part “LAST HOUR 6-18-79”

One copy of FBI Laboratory Report dated December 13, 1978.

Results of examination:

Two electronically processed copies of the speech information (left channel) from Q42 were made, each on one 7-inch reel of magnetic tape at recording speed of 3 3/4 inches per second and a full-track configuration.

An aural examination of the also submitted copy of Q42 revealed a quarter-track 2 channel recording. No copy of this item was made.

No examination of the copy of the Laboratory Report was made. The copy of the Laboratory Report is being retained by the Technical Services Division.

The also submitted a copy of Q42 was personally delivered to Special Agent [name deleted] on September 10, 1979 to be forwarded to the Governments of Guyana.

Q42 and the processed copies were forwarded to San Francisco under separate cover via registered mail on September 10, 1979.

[Page 3 – routing slip]

[Pages 4-8 – notes, worksheets, and transmittal form summarized in report]

[Page 9]

FBI LABORATORY
FEDERAL BUREAU OF INVESTIGATION
WASHINGTON, D.C. 20535

December 13, 1978

To: SAC, San Francisco (89-250)
From: Director, FBI
Re: RYMUR

Examination requested by: Criminal Investigative Division
Reference:
Examination requested: Aural Analysis
FBI file no: 89-4286
Lab. No.: 81207075-G UV/SH

Remarks:

Enclosure (1) (1 transcription)

[Page 10]

Report of the
FBI LABORATORY
FEDERAL BUREAU OF INVESTIGATION
WASHINGTON, D.C. 20535

December 13, 1978

To: SAC, San Francisco (89-250)
Re: RYMUR
FBI file no: 89-4286
Lab. No.: 81207075-G UV/SH

Specimens received: December 7, 1978, personally delivered from Guyana by [name deleted]

Qc42 Direct copy of “Last Hour” tape

Attached here with is the transcription of Qc42.

This specimen is being retained at FBIHQ.

[Pages 11-42 – FBI transcript of “Death Tape”]

Originally posted on November 9th, 2020.

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