TRIP REPORT (SANITIZED) RD-79 T.O. V AND T.O. VII

• Document Type: CREST
• Collection: General CIA Records
• Document Number (FOIA) /ESDN (CREST): CIA-RDP78-03424A000500120009-6
• Release Decision: RIPPUB
• Original Classification: S
• Document Page Count: 3
• Document Creation Date: December 22, 2016
• Document Release Date: April 11, 2012
• Sequence Number: 9
• Publication Date: October 11, 1956
• Content Type: MEMO

Declassified in Part - Sanitized Copy Approved for Release 2012/04/11: CIA-RDP78-03424A000500120009-6
11 October 1956
1,1 Trip Report
RD-79 T.O. V and T.O. VII 25X1
1. &/ITN-4 Precision Oscillator -
?
a. Precision oscillator forks will be due in the Office
22-27 October 1956. Less those covered in ; ask-T amendment.
b. The output configuration as submitted to the contractor under
specification 56A-1049A Figure 1 has been examined and found
subject to output voltage instability when plate voltage
changes, within the range anticipated to be encountered when
operated from 28vdc aircraft governed supply is used. The
output distortion was measured and found to be in the order
of at least 4.5%.
c. With the delivery of the recorder unit to be employed with
the W/0-2 system the contractor has been able to redesign
the oscillator output circuitry so as to provide a total
harnonic distortion in the order of 0.56 to 0.78?, and the
output voltage and distortion reflect very minor changes when
the plate voltage is changed between the ranged to be en-
countered in airborne services. Finalization has been held
in abeyance pending the receipt of the actual tuning forks
which will be employed.
d. indications are that the total power drain will be less than
the maxim= originally established. Output tubes (twin triodes)
will be arranged on a parallel heater arrangement rather than
a series string so as to permit maximum retention of the
socillator outputs in the event of a tube failure.
e. Oscillator power to beobtained from the 28 volt regulated
power distribution point. Oscillator oven power to be from
non-regulated power. The decision to supply these two
portions from separate power sources is based upon current
inability to predict potential noise to be encountered in
the oscillator oven contacts.
f. The physical size of the fork unit and the power supply have
increased the chassis size from ATP, to ATR size. Rack uounta
and cabinets are on hand at the contractors. Front panels are
now being painted.
APR
DOC ~-. REV DATE ~9 tseo BPy~O
ORIG COMP D33 OPI TYPE
ORIG CLASS -..S- PAGES 3 REV CLASS
CONFIDENTIAL JUST -~~-- NEXT REV T"10/0 RUTH: HR 10.2
Declassified in Part - Sanitized Copy Approved for Release 2012/04/11: CIA-RDP78-03424A000500120009-6
 Declassified in Part - Sanitized Copy Approved for Release 2012/04/11 CIA-RDP78-03424A000500120009-6
2. Detector Units ---
0
3.
An original desire was to optimize the RF-bypass capacitance
for each of the bands. The 1N358 crystals specified by the
user inc on a 7 mmfd bypass as a function of the crystal
design. investigation revealed that additional modi-
fications could not be accomplished without the establishment
of an R&D research project and that such modifications could
not be accomplished during the delivery terms of the Task.
b. Action has therefore been taken to cancel the nomenclature
previously assigned to the anticipated detector units.
Catalog stock number has been assigned to this basic unit
and this the detector assembly to be issued for all of the
bands this system is the 8/VD-2 (Sage Laboratories Model
SL-101-BNC ).
Not on hand but should be scheduled for shipment to contractor,
checking sub-contractor.
4. Wire and other materials --
Deliveries have been coming in covering the sockets, connectors, wire,
hardware, switches etc. It is estimated that another two weeks will be
required before actual assemblies can be initiated.
5?
?
Specification 57-A-1052-A
a. Cable terminations for installation cable 1 & 2 combined run
were called out in subject specification as based upon Figure
4-1 as furnished by the equipment manufacture. It has now
been determined, based upon the units (C) on hand with the
contractor that plugs have been installed 'where sockets were
specified in the referenced figure. In addition the vibration
clam used with P-702 is a modified unit of undetermined origin.
b. The recorder manufacturer is being contacted through Chief,
SPD to determine whether the equipment on hand or the
drawing on hand is to be the finalized version. Cable
connector inserts will be adjusted accordingly.
c. The vibration clamp RW Item No. 505 indicates that the unit
is a Winchester MRR-21H 'Modified per H W dwg 50401374-1. A
determination must be made as to whether this unit was
modified by RW or for RW by Winchester. 160 units are
required by J & B.
CONFIDENTIAL
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Declassified in Part - Sanitized Copy Approved for Release 2012/04/11: CIA-RDP78-03424A000500120009-6
 Declassified in Part - Sanitized Copy Approved for Release 2012/04/11: CIA-RDP78-03424A000500120009-6
6.
7.
0
I A L
a. The recorder shook mounts have been designed so as to permit
use in either the single or dual recorder rack assemblies.
b. The mounting plate for the dual unit filter/power supply
unit has been designed so as to permit one filter and power
supply unit being removed and when replaced by an information
amplifier this mounting plate can be re-installed in a single
recorder mount assembly.
Cable Coding --
Cable markers have been co-ordinated and contractor has noted that
coat of markers may over run original estimate by an amount of $700.00.
However,, it is not possible at this time to make a final determination.
8. Contract Completion --
Contracting Officer has extended Task V as & ded to provide a
termination date of 22 January 1957.
ILLEGIB
it
CONFIDENTIAL
Declassified in Part - Sanitized Copy Approved for Release 2012/04/11: CIA-RDP78-03424A000500120009-6