Andrea 1-F-5, 2-F-5, KT-E-5 Technical Information

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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