Early Television
Early Television
Early Television
Early Television
Early Television Early Television

Early Electronic Television

Baird T-18C Valve List

Television: Single channel TRF. 45.0 mHz video, 41.5 mHz audio. 12 inch CRT (Baird MW-3) Cathovisor triode. Magnetic focus and deflection, approx. 50 degrees.

Radio: Short (15.5-51 meters), Medium (198-550 meters) and Long (850-2000 meters) wave bands. In the television mode it tunes 41.5 mHz TV sound frequency.

Function

Quan.

Type

Notes
RF Chassis
RF amplifier 2 SE4 TRF - 42 -45 mHz
Video detector 1 D1
Video amplifier 1 TSE4

Deflection Chassis
Sync amplifier 1 AC2/HL
Horizontal (line) Sync Separator 1 2D4A
Horizontal (line) osc/output
1
41MP
Damper
1
UR1C
Vertical (frame) sync separator
1
2D4A
Vertical (frame) osc/output
1
AC/P
 Osc/output transformer also serves as the deflection coil

Radio/Power Supply Chassis
Osc/mixer (frequency changer) 1 TH4B AM/SW radio, 41.5 mHz TV audio
Audio IF amplifier 1 VP4B 456 kHz
Audio Detector 1 2D4A
Audio Amp & 41.5 mHz amp 1 SP4B Amplfies 41.5 mHz TV audio and detected audio simultaneously
Audio Output 1 AC4/PEN
Rectifier (HT) 1 UU5
High Voltage (EHT) 
1
HVR2 5000 VDC