CHARACTERISTICS AND CAPABILITIES OF DUAL TRACK AUDIO-VISUAL UNIT

• Document Type: CREST
• Collection: General CIA Records
• Document Number (FOIA) /ESDN (CREST): CIA-RDP61-00017A000100090013-9
• Release Decision: RIPPUB
• Original Classification: C
• Document Page Count: 2
• Document Creation Date: December 22, 2016
• Document Release Date: March 27, 2009
• Sequence Number: 13
• Content Type: REQ

Approved For Release 2009/03/27: CIA-RDP61-00017A000100090013-9
of 12 tapes, 8 film strips, extension cord and ti
copies of the operating and maiiztenance manual.
1 hour on a reel 5" in diameter.
e, Tim
f. S - 1-7/8 inches per second.
g. Bab= of - Two channel magnetic f la
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ac
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ng
e Ohannel
2MMAJ record with facilities to record on top or bottom
channel simultaneously with playback. Metallic
'strips on tape synchronize the tape message with
an automatic film strip transport,
II. n, - Revere model T-500 with a second recording head and
amplifier added. A junction box is provided to plug
in five earphones from the single Revere revised bii
mural output. Split earpiece headphones are used,
ambling the user to hear the output of each audio
channel tely and simultaneously. The second
amplifier is house, in the second unit. A volume
control and switch - is meted near the take-up reel,
for the second amplifier.
41 4
g-trig
ti
A Dukane projector is used. It is a 300 watt systom
without a blower. The film transport is advanced by
means of a push button switch, or automatically by
-placing easily inst. led adhesive aked metallic
strips on the shims; side of the tape. The metallic
strips couplete the circuit when they pass across
two contact posts installed on the Revere between
the two reproduce heada, thus making film advance
autmatio and synch ro o s with the sound.
A Revere high Impedance microphone is provided for
r
ard
k?en
1. ljdak
w
- 3 d.b?, 5t)-75OO cycles per second,
1021 ratio.
J?Rid JaM - Rapid forward Weed approximately ten times normal
Zn playing speed accomplished without disturbing or re-
threading tape.
nn ~- - 1netantasnsous start and stop of the tape may be ac-
*OMplished by using the standard Revere foot control,
CO
FID,rNTIAL
Approved For Release 2009/03/27: CIA-RDP61-00017A000100090013-9