LTV G133 Series User manual

·------------
GTM-0-133
TECHNICAL MANUAL
HF RECEIVER
G133 SERIES
PUBLISHED BY LTV TEMCO AEROSYSTEMS DIVISION
GREENVILLE, TEXAS
------------.------------
1 JULY 1964

GTM-D-133
TABLE OF CONTENTS
G133F HF RECEIVER
SECTION TITLE
Section I. General Description
1-1. General •••••••.•••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••
1-2. Equipment supplied •••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••
1-3. Equipment Required but not Sllpplied•••••••••••••••••••••••••••••••••••••••••••••••••••••••
1-4. Electrical Sp41citlcattona ••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••
1-5. Mechanical Speciftcat10!18 •••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••
Section U, Preparation for Use and Re•blpment
2-1. Unpacklng alJd. lnilpectlon •••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••
2-2. Prepa.ratton for Reshipment •••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••
2-3. Installation •••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••
Secnon m. Operation
3-1. General •••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••
3-2. Operating Controls ••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••
3-3. Operating Procedures ••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••
3-4. Slngle-Sldeb&M Rec eptlon ••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••
3-5. CW Reception ••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••
3-8. AM Reception •••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••
3-'7. Calibration •••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••
Section IV. Theory of Operation
Section V.
4-1. General •••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••.•••••••••••••••••••••••••••••
4-2. Darlington Ampliflers ••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••
4-3. D.Wled 'l'h.eory of Qs>eratton.••••••••••••••••••.•••••••.••••••••••••••••••••••••••••••••••••••
4-19. Electi-ontc Pacta.ge ••••••••••••••••••••••••••••••••••••••••••.••••••••••••••••• •• • ••• ••• •• •• • •• ••
Maintenance
5-1. General ..•.•..•.••.••••••••••••••••••••••••••••••••••••.•.•••••.••••••••••••••••••••••••••••••••••••••
5-2. Power and Equipment R8q\lirementa ••••...•....••.•••.•.••..•••.•••••••••••••••.•••••.... ,,.
5-3. Preventive Maintenance •••••••••••••••••.••••.••••••••••••••••••••••••••••••••••••••••••••••••••
5-4. Daily 1Ilspectl0t1 ••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••
5-5. 100-Boor lllspection •••••••••••••••••.•••••••••.••.••••••••.•.••••.•...•.•••.•..••••.•••.••••...••
5-6. 1000-Hoor IIlspectlon •••••••••••••.••••••••.••••.•.•••••••••.•••••••••.••••••••••••••••..••••••.••
5-7. R-F Sensitivity Test ••••••••••••••••••••.•••.•••.....•.••....•••••...•••.•.••••.••••.•.....•••..••
5-8. Signal Monitor Output Test ................................................................... .
5-9. AM BFO Adjustment and Test .............................................................. ..
FOR OFFICIAL USE ONLY
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GTM-D-133
TABLE OF CONTENTS {CONT)
G133F HF RECEIVER
SECTION TITLE PAGE
Section V. Maintenance (Cont)
5-10. CorrecUve Maintenance •••••••••.••••.••••••••••••••••••••••••••••••••••••••••••••••••••••••••• 5- 3
5-11. G133F Receiver Alignment Procedure•................................................... 5- 5
5-25. Gl33Dl2000-l Electronic Package Maintenance........................................ 5- 8
5-28. Megacycle Drive Chain Replacement •••••••••••••••••••••••••••••••••••••••••••••••••••••• 5- ·8
5-27. 'l'llrret Wafer Replacement.................................................................... 5-10
Section VI. ruustrated Parts Breakdown
Section vn. Scheniattcs
ii
FOR OFFICIAL USE ONLY

GMT-D-133
LIST OF ILLUSTRATIONS
G133F HF RECEIVER
TITLE
Table 1-1. G133F Tube and Semiconductor Complement. ...................................... .
Figure 2-1. G133F Critical Dimensions ........................................................... .
Figure 4-1. G133F HF Receiver Block Diagram ................................................. .
Figure 4-2. G133012000-1 Electronic Package Block Diagram ............................ ..
Figure 4-3. G133D12000-1 Electronic Package Partial Block Diagram .................. ..
Figure 4-4. Gl33D12000-1 Electronic Package Partial Block Diagram .................. ..
Figure 4-5. G133D12000-1 Electronic Package Partial Block Diagram ................... .
Figure 4-6. R-F Input Circuits, Simplified Schematic ....................................... .
Table 4-1. G133 HF Receiver Crystal Utilization ............................................. .
Table 5-1. Necessary Teat Equipment ..•...........................................................
Figure 5-1. Monitor Input Test Setup ............................................................. ..
Figure 5-2. Top Chassis, Alignment and Adjustment Locations ............................ ..
Figure 5-3. Bottom Chassis, Alignment and Adjustment Locations ....................... .
Figure 5-4. R-F and I-F Transformer Terminal Identifications ......................... .
Figllre 5-5. Trimmer Capacitor Settings ...........................•••............................
Figure 5-6. Receiver Gain Adjustment Test Setup ........................................... ..
Table 5-2. G133F TrooblesbooUng Chart ...............................................•......••..
Figure 5-6. Band Indicator .Bead Chain Stringing ............................................. .
Fig\lre 5-7. G133F AM BFO Test Circuit .............................................•..........
Table 5-3. G133F HF Receiver Slgnal I..evels ....................................•.............
Figure 5-8. Mechanical Band and TUnlng Aid Linkage, Elq>loded View ................ ..
Table 5-4. Voltage and Resistance Measurements ............................................ ..
Figure 6-1. Model G133F HF Receiver, Front and Rear View ............................. .
Figure 6-2. Model G133F HF Receiver, Top View .......................................... ..
Figure 6-2A. Model G-133B Receiver, Bottom View ........................................ .
Figure 6:.3. Model G133F HF Receiver, Bottom, Upper Right View ..................... .
Figure 6-4. Model G133F HF Receiver, Bottom, Lower Right View .................... .
Figure 6-5. Model G133F HF Receiver, Bottom, Lower Left View ..................... ..
Figure 6-6. Model G133F HF Receiver, Bottom, Upper Center View .................. ..
Figure 6-7. Model G133F HF Receiver, Bottom, Upper Left View ..................... ..
Figure 6-8. Model G133F HF Receiver, Bottom, Right Side View ...................... ..
Figure 6-9. 70K7 Oscillator ........................................................................... .
Figure 6-10. Mechanical Band and TUnlng and Tuning Linkage .......................... ..
Figure 6-11. Turret Wafers, Al and A4 ......................................................... .
Figure 6-12. Turret Wafers, A2, A5 and A6 ..................................................... .
Flg\lre 6-13. 'l'llrret Wafer, A3 ...•.........•...............................•..................•.......
Figure 6-14. Turret Wafer, A7 .................................................................... ..
Figure 6-15. Turret Wafer, AS .................................................................... ..
Figure 6-16. Turret Wafer, A9 .................................................................... ..
Figure 6-17. Turret Wafer, AlO .................................................................... ..
Figure 6-18. G133D11000-2 Mixer Assembly ................................................... .
Figure 6-19. G133F13000-1 Oscillator Assembly ............................................. .
Figure 7-1. G133F HF Receiver ..................................................................... .
Figure 7-2. G133F12000 Electronic Package Schematic ..................................... ..
Figure 7-3. Turret and R-F Section Schematic ................................................ ..
Figure 7-4. Gl33F13000-1 Oscillator Assembly Schematic ................................ ..
FOR OFFICIAL USE ONLY
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iii

GTM-0-133
Section I
G133F
SECTION I
GENERAL DESCRIPTION
1-1. GENERAL
The G133F Receiver is a single-channel SSB-AM-
CW receiver covering the frequency range between
0.2 me and 30 me in 30 bands of 1-megacycle
width each. Twenty-eight positions of the turret
plus two positions of overtravel provide the 30 bands.
Triple conversion is used for the 0.2- to 7-mc
bands and double conversion is used for the 7- to
30-mc bands. Audio and i-f outputs are provided.
1-2. EQUIPMENT SUPPLIED
QTY
1
As Reqd
ITEM
Receiver
Mount
PART NO.
G133F00000-1
GMl9400000-1
1-3. EQUIPMENT REQUIRED IUT
NOT SUPPLIED
QTY
1
ITEM
PART NO.
DS07-7S059
Connector
1 Connector DS07-7P059
Connector UG21EU
1-4. ELECTRICAL SPECIFICATIONS
Primary power requirements, signal inputs and out-
puts, frequency range, bandwidths, and overall
system electrical specificatiODB are:
Type Reception:
Frequency Range:
Input Power Required:
R-F Input Impedance:
500-KC 1-F Output:
Matching Speaker
Impedance:
SSB-AM-CW
0.2 to 30 me in 30 one-
megacycle bands, continuous
coverage
115- or 230-volt, single-phase
50- to 400-cps ac, 125 watts
(1.09 amps); 28-volt de, 4.7
watts (168 milliamperes)
50 ohms, unbalanced
50-mv minimum into 50-ohm
load with 5-microvolt
input signal
4 or 600 ohms
Line Output
Impedance: 150
ohms unbalanced and
600 ohms balanced.
Matching Phone Patch 500 to 600 ohms
Impedance (Local):
Frequency Stability: During temperature change
from 0 to +50°C, after 20-
minute warmup, audio output
frequency will not vary more
than ±885 cps for carrier
frequencies from 2 to 7 me.
From 7 me to 30 me, stabili-
ty varies from 36 PPM ±400
cps at 7 me to 27 PPM ±400
cps at 30 me. For ±10% line
voltage variation, frequency
varies not more than ±100
cps.
Calibration Accuracy: When zeroed to nearest 100-
kc calibration point, the fre-
quency will be within ±400
cps.
Audio-Frequency
Response:
SSB
AM
Audio Output Distor-
tion (SSB Test Signal
100-Microvolt Input,
1.0-W Output):
Local
Line
Q-Multiplier Rejec-
tion Notch Depth:
Receiver Sensitivity
(Nominal):
AM
SSB and CW
300 to 2700 cps ±3 db
100 to 2500 cps ±6 db
Not more than 10 percent
Not more than 1.2 percent
Not less than 40 db
3 microvolts for not less than
10-db signal+ noise/noise (2
to 30 me)
15 microvolts for not 1e s s
than 10-db signal + noise/
noise (0.5 to 2 me)
20.2 microvolts for not less
than 10-db signal + noise/
noise (0.2 to 0.5 me)
0.6 microvolts for not less
than 10-db carrier on/carrier
off (2 to 30 me)
3.0 microvolts for not less
than 10-db carrier on/carrier
off (0.5 to 2 me)
4.0 microvolts for not less
1-1

Section
G133F
GTM-D-133
Selectivity:
than 10-db carrier on/carrier
off (0.2 to 0.5 me)
CW (at 6-db points) 300-cps bandwidth
SSB (at 3-db points) 2.4-kc bandwidth
AM (at 6-db points) 5.0-kc bandwidth
Spurious Responses:
Intern.al Spurious
Signals
Other Spurious
Responses
Image Response
Less than one microvolt
equivalent signal (above 2 me)
Not less than 80 db down
Not less than 50 db down
1-5. MECHANICAL SPECIFICATIONS
Dimensions and weight of the G133F are:
Dimensions:
Height
Width
Depth
Weight:
1-2
6-1/4 inches
18-5/16 (approx) inches.
12-7/8 (approx) inches.
26 pounda
G133F TUBE AND
SEMICONDUCTOR COMPLEMENT
SYMBOL
TYPE FUNCTION
CRITHRU INl28 PRODUCT DEMODULATOR
CR4
CRS
IN67A METER RECTIFIER
.CR6 THRU
INl69S POWER SUPPLY RECTIFIER
CRl3
CR14
IN482A
AGC RECTIFIER
CRIS
INl28 AM DETECTOR
CRl6
IN482A AGC STABILIZER
CRl7
IN67A
MUTING TRANSIENT SUPPRESSOR
CRl201
INIOOA
MIXER
CR1202
G02
ELECTRONIC SWITCH
CRl203
IN30248
!ZENER REGULA TOR
QI 2N647
SSS/CW A-F AMPLIFIER
Ql201
2Nll42
R-F AMPLIFIER
Ql202
2Nl142
AMPLIFIER
Q1203
2N1142
AMPLIFIER
Q1204
2N1142
AMPLIFIER
Ql20S
2N1142
IMPEDANCE MATOilNG AMPLIFIER
VI 6DC6
R-F AMPLIFIER
V2
6EA8
FIRST MIXER AND HF CRYSTAL
OSCILLATOR
V3
6EA8
SECOND MIXER AND 17 • .5-MC
OSCILLATOR
V4
6EA8
THIRD MIXER AND REMOTE GAIN GATE
vs, V7, 6BA6
1-F AMPLIFIERS
ANDV8
V6
12AX7
Q.MUL TIPLIER
V9
6BA6
AGC AMPLIFIER
VlO
6EA8
L·F MIXER AND L-F CRYSTAL
OSCILLATOR
Vll
5670
1-F CA THODE FOLLOWER AND AGC
CA THODE FOLLOWER
V12
68FS
SECOND LOCAL A-F AMPLIFIER
V13
6AK6
SECOND LINE A·F AMPLIFIER
V14
12AX7
FIRST LINE A-F AMPLIFIER AND FIRST
LOCAL A-F AMPLIFIER
V15(VS01) 6136
VFO
V16 6EA8
L·F MIXER AND CALIBRATION
OSCILLATOR
V17 6BA6
BFO
V18(VS02)
6136
VFO AMPLIFIER
Table 1-1

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I
~
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0
;IQ
0
""'
""'
n
>
,...
c:
"'
m
0
z
,...
-<
G133F CRITICAL DIMENSIONS
3.080
t----------17.620--------------i
MOUHTIHG IHFORMA TIOH
18 •. 180 ::::
o@oo o ~ o ~llMJ]
'
I [ l © 0
@1=1
'
I
I
@oo@o o@o@o
- -
i j
I -
17.620
.280J
.562
FROHT VIEW
Figure 2- I
4-25
,466·
I
6.62 ~
.220
0
0
0
8.5---~
0 0
1.001
r-+10.00~
d I
I
I
•--il-·~ ti~
I
- 6.27---I~
~ f-12.84
SIDE VIEW
.59
I .
3.12
_-l
C> "'
- CD
W n
w =·
""' 0
:;,
C>
....
~
I
c
I
-
w
w

GTM-0-133
Section Ill
G133F
SECTION Ill
OPERATION
3-1. GENERAL
The G133F is a single-channel SSB-AM-CW receiver
covering a frequency range of 0,2 to 30 megacycles
in 30 bands of 1-megacycle width each. The G133F
contains an electronic package which is used to
prepare the internal local oscillator signals for
processing by external equipment to determine the
tuned frequency of the G133F. Both i-f and audio
outputs are provided. The audio output level may
be visually monitored by a front-panel meter. The
meter may also be used to give signal strength in-
dications.
3-2. OPERATING CONTROLS
All of the operating controls of the G133F Rec elver
are located on its front panel. The function of each
of the controls is described in the following para-
graphs.
a. POWER -- The POWER switch controls the
power to the G133 F. The positlons of this switch
are OFF, STBY, ON, and CAL. With the switch in
the OFF position, power is removed from the G133F.
With the switch in the STBY position, the receiver
ls disabled but is capable of immediate operation
when the POWER switch is put ln the ON position.
Wlth the switch in the CAL position, the G133F
KILOCYCLE dial may be calibrated as explained
in paragraph 3-7.
b. RF GAIN -- The RF GAIN control adjusts
the gain of the r-f circuits. This control is normal-
ly set for the best signal-to-noise ratio in the audio
output.
c. MEGACYCLE TUNE -- The MEGACYCLE
TUNE control selects the 1-megacycle band in
which the receiver is to operate. The selected fre-
quency band is displayed on the MEGACYCLE count-
er in the top center of the receiver front panel.
d. KILOCYCLE TUNE--The KILOCYCLE
TUNE control selects the tenth megacycle portion
of the operating frequency; the tenth megacycle is
displayed on the MEGACYCLE counter. The KJLO-
CYCLE TUNE control is also used for fine frequency
selection. Kilocycles are displayed on the KILO-
CYCLE dial on the receiver's front panel.
e. ZERO SET -- The ZERO. SET control moves
the hairline on the KILOCYCLE dial. This control
is used to set the zero lndlcation of the KILOCYCLE
dial during calibration of the receiver.
f. MODE -- The MODE switch selects the mode
of operation of the receiver. Four positions are
provided: CW, USB, LSB, and AM.
g. REJECTION TUNING --The REJECTION
TUNING control provides for suppression of hetero-
dyne interference during AM operation.
h. METER SWITCH -- The METER s wit c h
selects the type of signal indication which is display-
ed on the meter. Three positions are provided:
RF, +lODBM, and ODBM. With the meter switch
ln the RF position, the meter indicates relative
signal strength. With the switch ln the +lODBM or
ODBM position, the meter indicates the level of
the audio output signal.
i. AF GAIN -- The AF GAIN control varies
the audio output level.
j. AM BFO ON-OFF SWlTCB--The AM BFO
ON-OFF switch in the ON position applies oper-
ating power to the beat frequency oscillator. The
BFO affects the G133F Receiver in the AM mode
only.
It. AM BFO FREQUENCY CONTROL -- The
AM BFO FREQUENCY dial, when rotated, varies
the BFO frequency from 485 kc to 515 kc. The
dial is divided into numbered divisions of 1, 2, 3,
4, 5, 6, 7, 8, 9, O, and each division ls subc:livided
in increments of 50 providing a total of 500 reset
points.
3-3. OPERATING PROCEDURES
The following paragraphs outline G133F operation ln
single-sideband, continuous wave and amplitude-
modulated modes. The procedures may vary slightly
at the discretion of the operator.
3-4. SINGLE-SIDEBAND RECEPTION
When the receiver is to be operated in the single-
sideband mode, the following procedures should be
used as a guide.
a. Turn the POWER switch to the ON position.
b. Turn the MEGACYCLE TUNE control to ob-
tain an indication on the MEGACYCLE counter
corresponding to the desired frequency band.
c. Turn the RF GAIN control fUlly clockwise.
d. Move the MODE switch to USB for upper side-
band reception or to LSB for lower sideband re-
ception.
e. Tune in the desired signal using the KILO-
CYCLE TUNE control.
f. Set the AF GAIN control for a comfortable
listening level.
g. Adjust the KILOCYCLE TUNE control to
obtain the most natural sounding audio output.
h. Adjust the RF GAIN control to the position
which gives the best signal-to-noise ratio.
i. Readjust the AF GAIN control if necessary.
3-1