PORTABLE RECORDER-REPRODUCER UNIT

• Document Type: CREST
• Collection: General CIA Records
• Document Number (FOIA) /ESDN (CREST): CIA-RDP78-03172A000300050050-0
• Release Decision: RIFPUB
• Original Classification: S
• Document Page Count: 5
• Document Creation Date: December 22, 2016
• Document Release Date: April 10, 2012
• Sequence Number: 50
• Content Type: REPORT

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Declassified and Approved For Release 2012/04/10: CIA-RDP78-03172A000300050050-0
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PORTABLE RECORDER REPRODUCER UNIT
T AL
INTRODUCTION
This proposal covers the design and fabrication of 25 units
of a portable tape recorder-reproducer equipment and accessory kit
to be mounted and incorporated in a conventional man's suitcase. The
equipment will have provisions for remote actuation of the recorder unit
as well as dual microphone input and phone output. The accessory kit
supplied will include microphones, basic service tools, instruments,
and operating spare parts for field maintenance purposes. The entire
unit will be designed with the objective of providing a completely
packaged monitoring unit capable of field service in a convenient forma.
DESIGN SPECIFICATIONS
1. The equipment will consist of a tape recorder-reproducer,
two auxiliary connecting and control panels and an accessory kit all
housed in a conventional 26 inch suitcase covered with suitable fabric
so that the outside appearance will not in any way suggest a special
installation.
2. The tape recorder-reproducer unit will be a half track,
l10 P 60/L, Ampex model 60l u - 3-3/4 inch per second tape speed, modified
for mounting in the suitcase and equipped with controls and additional
circuitry as specified further.
3. The following additional circuitry and controls will be
provided:
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Declassified and Approved For Release 2012/04/10: CIA-RDP78-03172A000300050050-0
 Declassified and Approved For Release 2012/04/10: CIA-RDP78-03172A000300050050-0
a. Remote Start and Operation of recorder-
reproducer unit.
b. Provision for dual microphone input.
Co Provision for dual headphone output
with individual volume control.
d. Separate On-Off control for recorder-
reproducer drive motor and B* Supply.
4. Ali additional circuitry and controls listed will be mounted
on two auxiliary panels within the suitcase, one panel containing the
dual microphone input, the other containing all of the remaining additional
circuitry and controls.
5. The suitcase mounting arrangement will provide spare parts
and accessory equipment storage in such fofem that the equipment will be
capable of transportation without injury to the instruments and parts.
A list of the spare parts and accessories to be furnished with each
recorder-reproducer unit is appended to this proposal.
6. A manual of Operating and Field Maintenance Instructions
will be prepared and furnished with each recorder-reproducer unit.
7. A standard Ampex Recorder Reproducer Manual for Model 601U
will also be furnished with each equipment.
8. An illustrated Instruction and Operating sheet will be
mounted in the suitcase cover where it may be readily seen by the
operator.
Declassified and Approved For Release 2012/04/10: CIA-RDP78-03172A000300050050-0
 Declassified and Approved For Release 2012/04/10: CIA-RDP78-03172A000300050050-0
G~L DESCRIPTION
A preliminary layout of the equipment described is shown in
Figure I attached. All of the panel equipment and the recorder-reproducer
will be mounted firmly to suitcase sides and bottom, utilizing shock and
vibration mountings and supports. All controls and connection points
will be clearly marked for easy identification by the operator. The
additional circuitry for the two auxiliary panels is shown in schematic
form in Figures 2 and 3 respectively, attached. Auxiliary Panel No. 1
will contain two paralleled Jack positions for microphone inputs.
Auxiliary Panel No. 2 provides a dual headphone output with
individual volume controls as well as a Jack for a remote control switch
for operation of the recorder-reproducer. This panel will also contain
a battery compartment for the temote actuating relay battery supply, a
switch for the recorder motor and a fused line for the recorder AC power
cable. There is also provided a line input Jack for microphone input.
Neon indicator lamps will be mounted for operational indication. Opera-
tion of the Ampex recorder-reproducer will be in accordance with procedures
listed in the Ampex manual.
A footage remaining indicator will be provided by mounting a
calibrated plate on the recorder deck under the tape supply reel so that
as tape is reeled off, the footage remaining can be read directly from
the plate.
In all instances the design and construction of the entire
equipment will be accomplished utiliz1 g the best engineering and commercial
practices to provide a unit of long life and high reliability. The
Declassified and Approved For Release 2012/04/10: CIA-RDP78-03172A000300050050-0
 Declassified and Approved For Release 2012/04/10: CIA-RDP78-03172A000300050050-0
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arrangement of units in the case will be made to give a proper balance
of weight for carrying. Consideration of the conditions of equipment
service will govern the mechanical and electrical design and selection
of material and components. Where possible, the use of corrosion
resistant material, hardward and plating will be observed and vibration
and shock protecting fasteners and mountings will be specified. Spare
parts and accessory instruments will be stowed in spring clip and
strap mountings for firm support and retention during transportation of
the case.
The suitcases will be supplied In protective polyethylene
Declassified and Approved For Release 2012/04/10: CIA-RDP78-03172A000300050050-0
 Declassified and Approved For Release 2012/04/10: CIA-RDP78-03172A000300050050-0
PORTABLE RECORDER REPRODUCER UNIT CONFLPi
ATIAL
ccessories and Spare Parts
2 "Mini-Mix" units
6 Spare fuses 1 amp 3AG
1 Shielded Patch cord - 6 feet long
1 Spare 6 volt battery unit (mercury type)
1 Remote actuator cord - 25 ft. long, telephone plug
one end, switch on other.
2 Spare plastic empty reels for tape machine.
2 Microphones, Electro-voice # 630 with cables 6 feet
long and equipped with telephone plug connectors
1 Ampex Manual
1 Operations and field maintenance manual for modified
unit
1 Can of tape machine lubricating oil
1 Bottle head cleaner
2 5879 tubes
2 12AY7 tubes
2 Phillips #1 Screwdrivers
1 1/4 x 6" screwdriver
1 Krauter miniature diagonal cutting pliers
1 to " needle nose
it long flat nose
1 Speedex wire stripper
1 Polyethylene bag for suitcase storage protection
1 Volt-Ohmmeter 20,000 ohms per volt, Simpson 260
1 Pencil soldering iron - URGAR #776 w/1235 heat unit and
3 Spare pyramid tips and small roll rosin core solder
1 Small roll scotch #33 insulating tape
Declassified and Approved For Release 2012/04/10: CIA-RDP78-03172A000300050050-0