TMC RFA-1A. SERIAL#595.

(Click for full-size picture)	This is a TMC RFA-1A Radio Frequency Amplifier WITH original power supply. It does NOT have the original power cable. Charles made up one that works, but you will have to figure out which pin goes where to make it work. Jo Ann says it was in working condition at the time of his death three years ago. The inside is dusty, but otherwise very, very clean. It shows the typical TMC construction technique. The transmitter weighs about 40 pounds, but the power supply weighs more like 90 pounds
(Click for full-size picture)	It uses two Eimac 4CX250B drivers with forced-air cooling. It has ceramic chimneys. The unit has two tags on the front. One says that it is an RFA-1A, and the other says it is a PAL 350A. Take your pick. My understanding is that it can supply 350 Watts PEP all day and all night. It looks seriously underrated at that. Good, conservative design - just like we were taught in engineering school, but seldom actually get to practice.
(Click for full-size picture)	The bottom of the unit doesn't show much. I didn't want to take the shield panels off. What you can see is quite clean and well-built. Typical TMC construction.
(Click for full-size picture)	Closeup of the two Eimac 4CX250B drivers.
(Click for full-size picture)	This is the cable that Charles made up to connect the power supply to the transmitter. It worked, but you will have to figure out which pin goes where.
(Click for full-size picture)	This shows the top of the power supply with the lid off. It is dusty, but otherwise in good condition. The 5Y3 rectifier has been replaced by a couple of silicon rectifiers placed in the socket pins. The high voltage rectifiers are still fire bottles. The tag on the front of the power supply identifies it as a PSP 350A, serial number 594. There is another tag just below that that says "This unit has been modified as per TMC KIT 232A". No, I don't know what that means.