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Description: Technical Materials Corp GPT-750 with Amelco R-390a stuffed in the empty center drawer. I had to TIG weld in a brace in the back of the drawer to help support the rear of the 390. Still have to do a bit of alignment on the drawers before polishing the paint up a bit. I'm going to leave the blue alone on the cabinet for now until the radio gets moved to it's new operating QTH. I would hate to paint it now, then bang the hell out of it going up or down a flight of stairs. All and all, the camera makes things look much worse than they are. Not too easy to see, but it sits on 4" heavy duty needle bearing swivel casters that make this rig, all 900lbs of it, roll around literally with one finger. They look a little goofy being white, but they don't mark hardwood floors. The stomp lock on the top of the pedal not only stops them from rolling, it also stops them from swiveling. Just locking the two front ones, and the radio stands there nice and solid.

The modulator for this rig will be in a separate short bud cabinet using a Moloney mod trans and reactor I have from a bc-1f and a big GE 5M/10kV decoupling cap. Tubes will be a pair of new RCA 833a's. It's under testing now and as soon as I can clean it up a bit so it doesn't look like a drunk monkey built it, I'll put up some pics.  
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Keywords: GPT-750 
Posted by: W1ATR June 25, 2007, 10:16:07 PM

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Posts: 1479
February 18, 2008, 04:39:33 PM

That top panel on the GPT 750 came out beautiful. Great looking rig!


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