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TRK9, TRK90, TRKI2, TRKI20
RCA TUBE COMPLEMENT
In KC-4,
KC-4B (TRK-12) and KC-4A, KC-4C (TRK-9) Video Chassis:
( I) RCA.
6A C 7/1852.. . . . . . . . . . . . . . . . . . . . . . . 1st Det.
( 2) RCA.
6 J 5 .. . ................... ..........-................... . . Oscillator
( 3) RCA
6 A B 7 / 1 8 5 3 . . . . . . : . . . . . . . . . . . . . . . 1st Pix. IF .
( 4) RCA
6AB7/1853........................
( H RCA
6AB7/1853.................................... ..
( 6). RCA-
6AB7/1853......................................... 4th Pix. I.F.
( 7) RCA
6A C 7/1852.. . . . . . . . . . . . . . . . . . . 5th Pix. I.F.
( 8) RCA
6 H 6 ................
Kfl
9) RCA
6F8-G............................................... AVC or Limiter
(10) RCA-
6A C 7/1852.. . . . . . . . . . . . . . . . . . . Video Amp.
(11) RCA
6 H 6 .......................
(12) RCA
12AP4/1803-P4 (TRK-12) or
RCA
9AP4/1804-P4 (T R K -9)..........
In KK-7, KK'7D (TRK-12) and KK-7A, KK-7E (TRK-9) Television Socket Power Units:
(24) RCA-5T4.............................
In KC-4F, KC-4J (TRK-120) and KC-4H (TRK-90) Video Chassis:
( 1) RCA-6AC7/1852................................
( 2) R CA -6J5.......................
( 3) RCA-6AB7/1853.................
( 4) RCA-6AB7/1853.........
( 5) RCA-6AB7/1853.. . ........................
-( 6) RCA-6AB7/1853.............
( 7) RCA-6AC7/1852.. . . . . . . . . . . ------- . . . 5th Pix. I.F.
( 8) R C A -6H 6............................. .................... Pix. 2nd Det.
( 9) RCA-6SQ7 ................. . . . . . . . ................
(10) RCA-6AC7/1 8 5 2 . . . . . . ..........
(11) RCA-12AP4/1803-P4 (TRK-120) or
RCA-9AP4/1804-P4 (TRK -90)..............
Note: An RCA-6H6 D.C. Restorer is added in some TRK-
In KK-7F,. KK-7J (TRK-120) and KK-7H (TRK-90) Television Socket Power Units:
(23) RCA-5U4G (60 cycles, without D.C. Restorer),
RCA-5T4 (60 cycles, with D.C. Restorer), or
RCA-5T4 (50 cycles)............... Low Voltage Rectifier
TELEVISION CHANNELS (Selector Switch Positions)
1 . . . . . . . . . . . . 50 to 56 me.
2 ...................... 60 to 66 me.
5 ........................84 to 90 me.
PICTURE SIZE (Approximate Mask Dimensions)
TRK-9, TRK-90...............................
TRK-12, TRK-120.......................................7% x m
Note: 7 his sayięc- note includes all chant/cs that have been incorporated since initial production, including deletion of
the 44-50 in.c. channel and addition of the 60-66 m.c. channel.
A good ground should be connected to the re
ceiver at all times.
Always wear gloves and shatter-proof goggles
when handling Kinescope tubes.
Do not eliminate the protection afforded by the
interlock switches.
ALWAYS replace the shield can over the 2V3-G
high voltage rectifier. The most dangerous portion
of the H.V. supply is the plate lead of the 2V3-G
tube.
Do not measure any voltages on the video chassis
unless the primary leads of the high voltage trans
TELEVISION RECEIVER
Electrical Specifications
2nd Pix. I.F.
3rd Pix. I.F.
Pix. 2nd Dct.
D.C. Restorer
Kinescope
Low Voltage Rectifier
Oscillator
1st Pix. I.F.
2nd Pix. I.F.
3rd Pix. I.F.
4th Pix. I.F.
Limiter
Video Amp.
Kinescope
3 . . . . . . . . . . . 66 to 72 me.
4 . . . . . . . . . . . 78 to 84 me.
I p x 7>/4 in.
in.
IM P O R T A N T P R E C A U T IO N S
(13) RCA-6SK7........................................ ..
(14) RCA-6AB7/1853.. . . . . . ' . . . . . . . . . . . 2nd Sound I.F.
(15) R C A -6H 6.................................
(16) RCA-6N7.................... jV .. . . . . . , 1st Sync. Sep.-Amp.
(17) R CA '6Y 6'G ............. ............. . . . . . . . . . 2nd Sync. Sep.
(18) R C A -6N 7..i f .................................. ............ Sync. Amp.
(19) RCA'6N7 ..................................
(20) RCA -6L6....................... ....... . .........
(21) RCA-5V4G (60 cycles) or
RCA'25Z6 (50 c y c l e s ) . . . . . . . ........... Hor. Damping
(22) RCA-6N7.......................
(23) R C A '6J5.. . . . . . . . . . . . . . . . . . . . . . . . . . . Vert. O utput
(25) RCA-2V3-G. . . . . . . .
1st Det.
(12) RCA-6SK7.. . . . . . . . . . . . . . . . . . . . . . . 1st Sound I.F;
(13) RCA-6AB7/1853............ ..
(14) RCA-6H6........... ..
(15) RCA-6N7. . . . . . . . . . . . . . . . . . .
(16) RCA-6Y6-G.. . . . . . . . . . . ; . . . . . . . . . 2nd Sync. Sep.
(17) R C A -6N 7.. . . . . . . . . . . . . . . . . . . . . . . . . . Sync. Amp.
(18) R CA -6N 7...................................
(19) RCA-6L6...............................
(20) RCA-5V4-G (60 cycles) or
RCA-25Z6 (50 c y c le s )....................... Hor. Damping
(21) RCA-6N7........... ........................... Vert; Osc.-Discharge
(22) R CA -6J5.. . . . . . . . . . . . . . . . . . . . . . . . . Vert. O utput
120, TRK-90.
(24) RCA-2V3-G................................. High Voltage Rectifier
Overall Video Band W id th .. . . . . . . . . . . . . . . . . . . . . . 4 me.
Scanning. . . . . . . . . . . . . . . . . . . . . . . . . . Interlaced, 525 line
Horizontal (Line) Scanning Frequency
(Sawtooth W av e). . . . . . . . . . . . . . . . . . . . . . 15,750 cps
Vertical (Field) Scanning Frequency
(Sawtooth W ave). . . . . .
Frame Frequency (Picture Repetition R a te ).. . . . . . . 30 cps
former have been unsoldered from the supply line,
and taped.
Use -only one hand when working on the video
or high voltage SPU chassis, and always connect a
shorting lead to ground (first)* then to the high
side of both high voltage filter capacitors.
Make no voltage measurements on the high volt-
age (7,300 volts) SPU chassis.
W ork on a television receiver should not be at
tempted by anyone who is not thoroughly familiar
with the precautions necessary when working on
high voltage equipment.
1st Sound I.F.
Sound 2nd Det.'AVC
Hor. Osc.-Discharge
Hor. O utput
Vert. Osc.-Discharge
High Voltage Rectifier
2nd Sound I.F.
Sound 2nd Det.-AVC
1st Sync. Sep.-Amp.
Hor. Osc.-Discharge
Hor. O utput
. . . . . . . . . . . . . . 60 cps
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