FAA 4cx-250B Transmitter

[Jim Bromley, K7JEB]

FRED HOLNAGEL wrote:

> The 50 watt rating is way below the capability
> of the final tube and the size of the power supply.

Maybe not.  There were a bunch of Collins VHF
aircraft-band transmitters that used low-level
modulation for AM.  That 4CX250B might be
blowing off 100 - 150 watts to make that 50-watt
carrier.

On the other hand, I have also seen FAA transmitters
that were plate-modulated by a pair of 4-65's, although
I think they were UHF jobs.

Jim, K7JEB

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