RR-11BB DEVELOPMENT TEST SPECIFICATIONS

• Document Type: CREST
• Collection: General CIA Records
• Document Number (FOIA) /ESDN (CREST): CIA-RDP78-03424A002400090058-5
• Release Decision: RIPPUB
• Original Classification: K
• Document Page Count: 10
• Document Creation Date: December 22, 2016
• Document Release Date: September 20, 2011
• Sequence Number: 58
• Publication Date: January 27, 1955
• Content Type: MISC

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STAT
SPECIFICATION NO., 55 Aa1O36 A-T
o LIMB Dev?1oymmt Test Specifications
27 Jerry 1955
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This specification shall be a paz1 of Sp ,ecif~.cation 55?A?1,036-A
for the deve1o nt of the I B C ? cati arms Receiver0
Pose of this Specification
This opecification shy, out ne the teat procedure to be
aonftc teed! on c 1Gted prototype e o ?eceeeax7 test egad ont
ie ite ed ( lueiYe of transistor test e to D test
meth ads are described and the test requirements are preentedo
120 Submittal of Teat D at
Test data shy, be e mitts simalteneowwrjith the deliveay
1.30
1 3?1o
13020
of prototype Models.
Teat Ecpipmmt
The following principal test egApw.nt is necessary to conduct
prototyps tests-
aencj S?coa exY Standard
military BC 22 D or e ivaient?
General Radio Frequency Hater %lodel LR 3 (Nadel 271).
Re 3o Sim a store
Meant Corporations Model 65-B, or equivalent.
Mee net Corporation Model 9C D or equivalent.
lo303o Ado Ntpnrt P e_ _ete$?
Ganoz'a Radio) Nod A 583cAo
71o3a~o A0 . Co Van a Volt ter
103050
to 3o 6c
R. F. B n
Model 4O0,
General Radio Model No0 916&AD or equivalent.
Ado Siae or
,ml H Lett Paces Model 200-B or 200-0 D or equivalent.
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L3070 A. N. C cations Receiver
Aar type (a) cable of covering the frequency range of from
15 kilocycles to 220 megacycles.
2010 Life Tests
2o2o
oD
341?1m
3.2.
302?10
The rs r s of Section 3 of this Specifications are baste
upon the use of fresh batteries. Test data required by Section 3
shs,U also bs obtained for battezy voltages representative of
these obtainable after 100 hoar D and after 150 hours of receiver
eration0
It sh be contingent upon the contractor to devise test
methods and submit test data for equipment. operation and storage
under the re rmants of Section 5-3. of the RH-11BB Development
Specifications.
Frequency Test Points
RR- 110B Tests, mess otherwimv indicated, eh&31 be made at
12D 15 D 18D 2 D and 30 megacycles except that should band
wAtching be employed in the. design of the equipment D such tests
sh, be mada at the high and low ends D and the center o?
each band.
Center Fz q aen Test Points
In such cases whom but a single frequency test point is
indicated this shall be so oaf' if band switching is not
6a- loyed? Sh9uld switching be employed the frequency
teat point shall be the center of each band.
RRc1 BB Receiver
Antenna Input jacdance
Method of Testa
a0 Receiver on and tuned to the Measuring frequency,
bo Controls set to ma3dmum,
co surent made with an R0 F. Bridge.
Req remento
1np at inyadmee shall be 300 ohms 0 3DO o ?
~o
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3.2.2, Accuracy
Method of Toot:
ao Receiver on and tuned to the nasuring frequency.
b17 R.F. ,final generator mmodulated 30% at c.prim
tuned to the receiver as determined by manimm audio
power outputs
c. Determine the frequency of the signal generator with
a secondary frequency standard,
da The difference between the receiver dial setting and
the secondary frequency standard shall deteaaaine the
calibration accuracy in cope so for per cent cal cmU-
tion against the tuned frequency.
Requirement:
The dial calibration shall be within 0.1% of the tuned
frequency,
3o2o3a g Resetability
ao Receiver on, BFO at 0 (1aFo center frquaency), and
the frequency dial graduation is approached in
clockwise direction. (Prequnencies epee fied in
section 3al00
bo An R. F. signal generator, u adulated, is tuned to
the receiver as determined by zero bear at the outp
ca Determine the frequency of the signal generator with
a secondary frequency standard,
d. Approach the same frequency dial Vadu ation in a
counterclockwise direction and repeat steps U4b6e and
Ile".. &copt at band edges, th? dial shall be shifted
a minimum of 500 kc before resetting.
eo The difference in the two second standard readings
shall date ne the resetabilitly error In cap?sa for
per cent calculation against the tunod :?Yagpe~F"nr @yo
Receiver on and tuned to the measuring f
off, and gain controls at maximum.
loacy a
-3-
3.2.4.1. A. H. fission types A2 and A3)
Method of Test;
g throughout the tuning rang
3a2?4a Receiver sensi i~ty
t;
The accuracy of dial resetabil .ty shall be wiudn 0,?A$
Roqui
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2.4,1. A. 14?? Norms , of Test - Cont d
b? The receiver input is connected to the R. P. signal
generator modulated 30% at,- 1000 cmp0s0 through a
ohm d load and the output tergdnated in an audio
output p r motor (40W :) )
00 Tune the signal generator to the receiver and , ,d just
the RoFO Input to establish a 005 milliwatt noise plus
sib ouutpuut0
nor.
The R. F. input voltage shall not emceed 15 microvolts for
a 005 williwatt output.
ssion tea Al) D
of Testa
a0 Rscaivez, on and tuned to the measuring frequency, BFO
tuned to 1000 copes?, and gain controls at d0
b0 The n eiiver input is connected to the R0S 0 signal
g9nwator through a 300 ohm du load and the output
to ted in an audio a: ibput power motor (400 ch )
ca0 Tune the signal generator to the receiver and adjust
the R.F. input to establish a 0.5 mill tatt noise plus
signal oautpuut0
Recent;
The RoF. Input voltage shall not exceed 5 microvolts for
a 0.5 watt output.
20402. C. W. C
2?50
A t en 1. guise Ratio
Method of Teat;
a0 Receiver ON and tuned to the measuring freq sncy ?0
adjusted to 1000 cycles, and gain controls adjusted
as Baer noted.
b0 The receiver input is connected to the R.F. sigma
generator through a 300 ohm dui load and the output
terminated in an audio output power meter (4000 o?is)
co Zone the signal generator to the receiver and adjust
the output to 5 microvolts,
do Adjust the receiver gain controls to establish
millvatt noise plus signal output.
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2o5o
output'.
The ratio of signal A= noise to noise Gha , be not
ieee tha 10 decibels,
2060
!Mae tion
nto
The ixgce rejection shall be 30 decibels or greater.
?o7o go F. R?9ection
method of Test;
Naas the receiver A. L Sensitivity at the high
end of the band (s).
be Rte the cigar 1, generator to the receiver f e
qacnoy pi twice the I. F. (2nd I. F. do bb1,4
corerei?n wied))
co lei the receiver sensitivity A. N. at tide
g? fr venoy0
do The legs rejection in decibels shall be calculated
-frcm thee ratio of the two sensitivity reasurnte
Obtained .in a and co
aso Neae the receiver A. AL sensitivity at the low and
of the band (5).
be R&-twe the signal generator to the inte ate
frcpency0
oo R urZ the receiver A. Me sensitivity at the 1. F.
rrQCPGa@Ye
dm The I. Fo rejection in decibele shall be calculated
ww the ratio of the two sensitivity eas snente
ob ed in a and co
Sim to I ern Noise Ratio - Method of Test - Cont1d
e. Renave the signal without diatan Bing the receiv,
settings o
f o Note the amomt of nois
ReLrcto
method Of Teats
Recreento
The a o F. rejection shall b
decibels.
not lose than
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Method of VGota
ao Overall selectivity measurements shall be made at the
app to center of the band (a). The BFO off and
gain controls at - 9- - i
b0 The R. F. signal generator emulated
shall be tuned to the center frequency
input and will .watt output recorded ae
level.
at 400 copa?3o
the iorovo
reference
c? Increase the Ra F. input signal 3 decibels.
do Detune the R. F. signal generator each side of the
center frequency until the audio purer outpaat decrease,
to the reference level.
e. treasure the f equeency of the R. F. sigml generator
with a secondary frequency standard and ord,
f. Increase the R. Fo microvolt input in steps of 6 D 1? 9
20D 40 and 60 decibels above the reference Input
level and repeat steps d and e for each step,
Requ ire n
tg
Orall Selectivity shall app
to the following
Response (Decibels)
Bandwidth (Kilocycle@)
w3
5.0
Q6
5.4.
d10
6.2
20
70
-4?
3,2.9. Audio Response
method of Test;
The receiver shall be corn nectc d to en R. F. oigmqj
generator modulated at a vaiab1e frequency wins
a standard da antennas. The output shat Fro
tee tend in an audio power output ster ( ohm)
hm The R. F. microvolt input shall be adjusted for 0.5
milli watt output at c.p.e.
co The medulating frequency shall, be varied between 150
and 7000 cC o p. s. and the power roaorded at l00 D 150D
200D 400, 700D 1=D 15009 2=a 25001. B D and 7CM
oapos0
Resent;
The audio response shall be essentially flat and not fall.
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below 3 decibels over the range of 150 to 2500 c?p,,sv
3.2.10? 9yoraU Stabi .tom
Thea 1
Method of Test-,
hermit..
After a two minute warmp, the rate of change of frequency
shall not =coed % per note,
2CdU002? Mechanical Shock (jarring)
Method of Toot-.
aO
The rr ce fiver on and tuned to the middle of the band (a),
B FO ong and gain controls at wardimum.
by A second frequency standard shall be loosely coupled
and tune for zero beat with the receiver. The fre-
quency is recorded.
c. Repeat step b at two minute intervals to obtain 12
consecutive madings.
do Plot a curve of per cent frequency change versus time.
eo Local oscillator drift shall not be compensated for by
introducing drift into the BFOG
ao The receiver shal7l, be on and tuned to the measuring
fregseancya BFO on and gain controls at xi aw ?
b0 A secondary frequency standard shall be loosely coupled
and tuned to zero beat eth the receivers
c? The receiver shall then be tilted to a 45 degree angle
from the surface of the bench, the rear lower edge of
the receiver case serving as the fulcrum. A free tell
drop shall be executed from this position, and the
secondary frequency standard brought to zero beat with
the receiver.
Requirement-.
Frreg~xsnoy shift shall not exceed O0
O % due to mechanical
shock,
!030.3. and capacity
of Test%
ae The receiver on and tuned to the nasuring frequency,
B FO on and gain controls at Maximum.
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201003, and capack . 1iethad of. Test; ?Contad
b, A secondary frequency standard shall be loosely
coupled and tuned for zero beat with the receiver.
co The receiver shall be picked up and handled.
Reerent?
There eh
city.
be no evidence of frequency drift due to hand.
setup in the 30 to 200 megacycle range. For the RS UBB
tests m the upper range of Figure No, 40 shall be = -tended
to 220 megacycles,
gacycle range and Figure 40 prescribes the measurement
ae Receiver radiated interference tests shall. be made in
accozdance with Z=1?16910(SIPS) as amended. Figure 39
outlined the test procedure in the 15 kilocycle to 30
bm Paragraph 405,1?4,,10.2. of the above specification is
herewith amended to read ?QLoad, - The receiver input
shall be terminated into 3 ohms,"
am Paragraph 3?6410201, of NIL-1-16910(SHIPS) is herewith
RR'IlBB receiver shall not hibit any oscillator
radiation in =cess of 400 micromicrowatts when sub-
jected to the receiver oscillator radiation test
epscified in paragraph 4.5-1-4. ever the frequency range
15 kilos Iles to 220 megacyclas.10
:a,12o pw ion Respon d
?,l~mlo ln%er
Method of Test:
ao Receiver qna BFO on, and gain controls at maximum. The
antenna terminated with a 300 ohm dap load4
bo The receiver shall be tuned over its frequency range.
Re ement:
There shall be no evidence of internal spurious responses.
:?3202, erara1
Method of Test-,
ao Receiver on B FO one and gain controls at mWdXmU
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x2.32.2. External %ath
method of Test-.
of Test? U Cont' d
is made at the center
bo A C.W. sensitivity was
of the band (s) and the microvolt input and power
output record
c. Increase the RF signal generator output to 200a
microvolts and tune the generator over its entire
frequency range noting each spurious response other
than at the image and intermediate frequencies-
da At each noted spurious response the signal generator
microvolt output shall be adjusted to obtain the
reference output,, Record signal inputs
?o Spurious responses shall be calculated frOm steps bar
d above.
Require ent%
Spurious response ( e ) shall be down 70 decibels-
3. 2 o l..3. Vibration
Method of Testa
a? Vibration tests shall be conducted in accox ce ttith
Bureau of Ships Specification (SHIPS) paragraphs
F 5b(2)a and F.5b(2)
Requirement-
ao After exposure to the above tests,, the R1-12B Teceive
shall c chibit no evidence of ma chemical brO&Wmm or
impaiment affecting the operational chara(?teristics
of the equipment.
3,2.4. D~o~s Vest
Method of Test;
a? The ecini not shall, be dropped grom a height of 36
inches to a solid oak surface. Sin successive free
fall drops shall be accomplished with the point of
impact being four corners a two surfaces of the
equipment case.
Requirnts
ao Upon completion of the drop tests v the equipment shall
exhibit no evidence of damage or inplizWOW, affecting
the operational characteristics of the equipment.
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