TECHNICAL PROPOSAL X III HRT-2 BEACON TRANSMITTER PRODUCTION

• Document Type: CREST
• Collection: General CIA Records
• Document Number (FOIA) /ESDN (CREST): CIA-RDP78-03153A000700030005-9
• Release Decision: RIPPUB
• Original Classification: S
• Document Page Count: 5
• Document Creation Date: December 23, 2016
• Document Release Date: May 12, 2014
• Sequence Number: 5
• Publication Date: January 1, 1961
• Content Type: REPORT

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Declassified in Part - Sanitized Copy Approved for Release 2014/05/14: CIA-RDP78-03153A000700030005-9 4-1
SECRET
Technical Proposal X 111
HRT -2 Beacon
? ? ,-, ! L ' irirs DOCUMENT CONTAINS INFORM-
jTION AFFECT1NG THE NATIONAL DEFENSE OF
THE UN1-1ED STA) Es WiTtliN THE MEANiNG OF
THE E:=T::"):\t,'?i.E A '.1 25 T.,.:NE 1948
(P181.1c,: 1 4.-:',/ :': .2 - 7"--i CON ; 1 ? U.S.C.
.
duc 793 AND 74, 62 STAT. 633). TH7. TRANS-
PR
E55,1pN CR T:.1.: R.Di ? ' 0 OF 1 '7) C-.)\ITENTS
Transmitter pro
I ANY mA.!...P,.:.Z.:r :'C UNALTKAIZED n
SON IS cmerrED BY LAW"
a-
INTRODUCTION:.
is pleased to submit a proposal to build production
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quantities
of the HRT
50X1
-2 beacon transmitter. This transmitter is a rugged,
highly reliable, weatherproofed transistorized transmitter operating in
the medium frequency range. The customer's urgent requirements call for an
extremely tight
schedule. In order to accomplish the delivery dates required,
will use the most efficient and most skilled manpower avail-
50X1
able to insure that reliability will not be sacrificed to gain time.
GENERAL DESCRIPTION:
The unit proposes to build is being built currently on
Task 28. The unit is housed in a gray case measuring under 15 x 4 x 9 inches
overall. A self-contained battery pack is inserted by removing the end of
the case with an attached screwdriver. The bottom plate, which also serves
as a mounting base for the transmitter is removable for circuit accessibility.
A 16 foot collapsible whip antenna is mounted on the case. A grounding rod
is provided, attached with ground braid to the case. Control knobs are
provided for oscillator and final output tuning. A meter measures r-f
current into the antenna and indicates peak tuning. The meter is illuminated
by a red pilot light which may be covered for night-time operation. The light
also serves as a battery voltage
lower than the battery end.
constant intensity from 9
point
to 20
indicator by not lighting at a supply voltage
voltage. The bulb is lit with relatively
volts supply voltage. Binding posts are
provided for connection of external antennas. A power connector/shorting
plug enables the use of an external supply and at the same time prevents
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connection of any external supply across the internal battery. An on-off
. ?
switch is provided with a switch guard to prevent accidental t9.ffigin REPr7 "Ph
M 0 9,3
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S ? .L E C HN I C AL PROPOSAL X ill b
HRT-2 Beacon Transmitter Production
the transmitter during handling. The necessity for a fuse is eliminated
by use of a transistor current limiter which limits fault currents to under
3 amperes and also protect against incorrect polarity on any external supply.
Extensive gasketing and sealing weatherproofs the unit. Construction
techniques are employed which make the unit highly resistant to damage by
vibration and. shock. Electrical design is such that the unit will operate
under a, wide range of temperature condition.
TRANSMITTER,DESIGN GOALS
Since the units are still being finalized on Task 282 the following are
presented as design goals rather than final specifications.
\
Frequency Range: 1500 to 1800 kc
Frequency Stability Crystal controlled within ?100 cps over a temperature
range of -40?C to 4.70?C, reference at 25?C.
Supply Voltage:: Nominal 15 volts ?40%. Self-contained battery supply
consisting of 12 Mallory RM12R mercury cells in
series, Mallory type 303247, 20.2v. Any external
supply capable of 9 to 21 volts dc at up to 3 amps.
Power Output:: Greater than 10 watts at nominal supply voltage into
a 50 ohm load. Unit shall be capable of feeding loads
of from 10 to 250 ohms with series reactance variations
of ?j 600 ohms with less than 3 db of degradation
from specification.
Carrier Identification::, A tone of 1000 to 2000 cps shall interrupt the carrier
with. modulation for 5 seconds out of 15 seconds. A
jumper shall be provided to supply continuous tone
modulation When desired.
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Declassified in Part - Sanitized Copy Approved for Release 2014/05/14: CIA-RDP78-03153A000700030005-9
C--ECHNICAL PROPOSAL X Ill
HRT-2 Beacon Transmitter Production
Operating Temperature: -00 to +70?C with less than 3db change in output
power (circuit only)
Size: Overall dimensions 15 x 9 x 4 inches
Weight: 17 lbs0 including batteries
Humidity: The transmitter will operate after storage for 4
hours in 100% humidity at L5?C.
Vibration: Resonant frequencies shall be determined by slowly
varying the frequency of the applied vibration through
a frequency range of 10-55 cps at an applied double
amplitude of .060 inches. Individual resonant frequency
surveys shall be conducted along each of three
mutually perpendicular axis. If any resonance is
noted., the equipment shall be vibrated at that
frequency for 30 minutes. When more than one resonance
is encountered with vibration applied along any one
axis, the test period may be divided among the resonant
frequencies or may be accomplished at the most severe
resonance, whichever is most likely to produce failure.
When clearly defined resonances are not noted within
the frequency range specifiedl the unit shall be
vibrated for one hour along each of its mutually
perpendicular axis at .060 DA and automatically
cycling at approximately one minute intervals from
10 cps to 55 cps to 10 cps. At the conclusion of
these tests the equipment shall meet specifications.
Drop Test: Unit shall be operable after six drops from 3 feet
to a concrete floor. The unit shall be dropped
once on each face.
r771
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TECHNICAL PROPOSAL X 111
HRT-2 Beacon Transmitter
Production
RELIABILITY TESTINGt
SECRET
In addition to designing a unit with components running at well below
their ratings,
takes many precautions to insure that only reliable
units are shipped. Starting with the incoming inspection of components where
all parts are checked against our specifications, the program consists of
testing at various phases of production to insure reliability. Units are
inspected after assembly for any faulty connections, improper lead dressing
or poor workmanship. After assembly and alignment the working units are shaken
on a paper jogger in various planes to remove any loose particles or show
up any faulty connections. The units are then temperature shocked to further
show up any cold solder joints. The units are placed in a cold box at -140?C
and allowed to stabilize for at least 4 hours. They are then quickly moved
to a hot box at *70?C and allowed to stabilize for 4 hours. The units are then
brough down to room temperature and are checked for proper operation. At
the successful completion of these tests the units are placed on continuous
burn-in for at least 48 hours. After burn-in they are final tested. Those
units passing the final test are ready for shipment.
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',TECHNICAL PROPOSAL X 111
HRT-2 Beacon Transmitter
Production
DELIVERY SCHEDULE:
Delivery
91.1.2aUlL Description Delivery Date
1.
10
.HRT-2 Beacon Transmitters
January 1, 1961
? and Accessories
20
Battery Packs
2.
50
HRT-21s and Accessories
January 15, 1961
100
Battery Packs
3.
100
HRT-2's and Accessories
? January 30, 1961
200
Battery Packs
This schedule is contingent upon the contract resulting from this pro-
posal being authorized on or before November 1, 1961. If the contract is
authorized after November 1, 1961, deliver 1 shall occur 60 days after
authorization, delivery 2 shall occur 75 days after authorization and delivery 3
shall occur 90 days after authorization.
Declassified in Part - Sanitized Copy Approved for Release 2014/05/14: CIA-RDP78-03153A000700030005-9