[BC] GE Transmitters

[PeterH5322]

>The manual I have isn't actually a TT manual--it's from a TF-5 amplifier
>(high-band VHF) that was connected to the output of our old TT.  Seems that
>GE built low power (5kw) transmitters, and then fed their output into
>the TF amps to get 50kw visual. Did RCA or others do the same kind of thing
>with early (1950's vintage) TV rigs?

Yes, the early ones.

A 5 kW visual/2.5 kW aural model, the TT-5, IIRC, which used 8D21 
water-cooled tubes.

Later, RCA would produce a more modern, air-cooled transmitter, the 
TTL-3/TTH-3 [ * ] , IIRC, and then go on from there.

In the late '50s/early '60s, PAs were usually the round ones with five 
tubes (35 kW; 5.0 kW per tube) and the square ones with seven tubes (50 
kW; 4.9 kW per tube).

[ * ] This model still had the FM exciter which was controlled by a 
motor-driven capacitor.