|
Early Electronic Television
Andrea 1-F-5, 2-F-5,
KT-E-5 Technical Information
Two channel (50-90 mHz) superhetrodyne (some sets had
three channel tuners). 5 inh CRT (5AP4) tetrode. Electrostatic focus
and deflection, approx. 30 degrees. |
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 detector |
1 |
6H6 |
|
| Video amplifier |
1 |
6AG7 |
Some sets used 6V6 |
| Sync separator |
1 |
6AC7 |
|
| Horizontal (line) oscillator |
1 |
6N7 |
|
| Horizontal (line) output |
1 |
6F8 |
|
| Vertical (frame) oscillator |
1 |
6N7 |
|
| Vertical (frame) output |
1 |
6F8 |
|
| Audio IF amplifier |
1 |
6AC7 |
8.25 mHz |
| Audio detector/amplifier |
1 |
6SQ7 |
|
| Audio Output |
1 |
6V6 |
|
| Rectifier (HT) |
1 |
5V4 |
|
| High Voltage (EHT) |
1 |
2Y2 |
2500 VDC |
Alignment instructions
Schematic diagram
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