[BC] FM Grounded Grid Triodes & FM Tetrodes

[Ron Youvan]

Dave Hultsman wrote:

> RCA may have pioneered tetrode FM power amplifiers,  but their early FM transmitters used ground grid for 3,5,10 kW.  and even the later few FM 50 kW. all using the 5762 finals.   The 50 kw. used the 7 triode tube ring type final amplifier used in TV aural amplifiers.   The original RCA 50 kW. FM transmitter of which, I believe, there were three made
/*snip*/

   The 7, GG 5762 finals could only put out 25 kW, the 50 kW TPO transmitter in Michigan
used two diplexed together.  The TV  amplifier was named TT25AL/TT25BL. (75/50 Ohm input)

-- 
Ron KA4INM