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Early Electronic Television
RCA TT-5, RCA TRK-5,
Westinghouse WRT-700 and WRT-701 Tube List
Television: Five channel (50-90 mHz) superhetrodyne. 5 inch CRT
(5BP4) tetrode. Electrostatic focus and deflection, approx. 30
degrees. The TT-5 amd WRT-700 have only low level audio output.
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Radio (TRK-5 and WRT-701 only): Short wave (7.0-22 mHz), medium wave
(2.3-7.0 mHz), and standard broadcast (540-1720 kHz) bands.
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Television Chassis
|
Function |
Quan. |
Type |
Notes |
| |
|
|
|
| Oscillator |
1 |
6J5 |
|
| Mixer |
1 |
6AC7 |
|
| Video IF amplifier |
2 |
6AC7 |
Video (9.5-12.75 mHz), audio (8.25 mHz) |
| Video IF amplifier |
1 |
6AB7 |
|
| Video detector |
1 |
6H6 |
|
| Video amplfier |
1 |
6V6 |
|
| Sync separator |
1 |
6N7 |
|
| Horizontal (line) oscillator |
1 |
6N7 |
|
| Horizontal (line) output |
1 |
6F8 |
|
| Vertical (frame) oscillator |
1 |
6N7 |
|
| Vertical (frame) output |
1 |
6N7 |
|
| Audio IF amplifier |
1 |
6AB7 |
8.25 mHz |
| Audio detector/amplifier |
1 |
6B8 |
|
| Rectifier (HT) |
1 |
5V4 |
|
| High Voltage (EHT) |
1
|
879 |
2500 VDC |
Radio Chassis (TRK-5/WRT-701 only)
| Oscillator/mixer (frequency changer) |
1 |
6A8 |
|
| IF amplifier |
1 |
6K7 |
455 kHz |
| Detector, AVC, audio amplifier |
1 |
6Q7 |
|
| Phase inverter |
1 |
6J5 |
|
| Audio output |
1 |
6K6 |
|
| Tuning eye |
1 |
6U5 |
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Radio Power Supply Chassis (TRK-5/WRT-701 only)
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