FAA 4cx-250B Transmitter

[FRED HOLNAGEL]

Several years ago I came up with a Collins Transmitter that is probably A.M. as is all prime FAA com gear. The following is on an attached metal label on the hinged front cover which is about 3"X2":
Transmitter, VHF 50- WAtt, Federal Aviation Agency, Type TV-36, Contract FA 64WA-5251, Ser 222, Collins Radio, Cedar Rapids, Iowa. It's built like the proverbial S.H.  About 20" cube. Looks like it could fit into a standard relay rack. It includes the power supply.It is in a completely enclosed cabinet. The final tank consists of a piece of metal tubing about 2" in diameter and a foot long for the inductance. All kinds of gearing to tune, etc.  Has transistors except for the 4CX-250B final which is housed in a solid metal cage. I haven't determined how high the final will tune but I think way above 118-136 MC. The 50 watt rating is way below the capability of the final tube and the size of the power supply.  I have several jpeg photos. I'd like any info someone may have on this radio. Thanks. Fred W7PRV


FRED HOLNAGEL
w7prv at teleport.com
Why Wait? Move to EarthLink.

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