TRI-X-500

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WB2G:
Picked up the xmtr on Monday the 17th,all 95 lbs. of it,this thing is really built well.500 watts SSB,400 CW,300 AM (not plate mod) well you can't have everything.Will post some pictures when I figured out how to load them from the camera???It looks like it should fire right up,can't find anything wrong with it yet.Uses a 4x150  final ,816's, 6x4's and Five  voltage regulators in the power supply.Pi net matches 40 to 100 ohms,VFO drive is agear with 110 to 1 ratio for 500 KC's.I can see why they wanted $795 for this back in 1963 .Will try to get it on the air this weekend.Joe. WB2FQD

w3jn:
That thing is tres cool, Joe!  Look forward to hearing it on the air.

Steve - WB3HUZ:
Lots of cool photos on that site, including these two rare birds.

http://www.jveras.com/radio/vintage/dfp201.html

http://www.jveras.com/radio/vintage/dfp-501.html

WB2G:
Looks like it will be next weekend,have a high voltage problem,but only when it's on.It's not a dead short ,just high current,will have to find out whats breaking down,can't find anything with the meter and don't see anything burning up????Happy Holidays,Joe WB2FQD

WB2RJR:
Quote from: WN2FQD on December 29, 2007, 02:46:55 PM

have a high voltage problem,but only when it's on.It's not a dead short ,just high current,

Joe,

I've noticed that too. If you leave the transmitter off, it appears to be working perfectly well.

Had a problem with the GK some years ago where the resistor in the parasitic choke on the driver to the final opened. It didn't look like a dead short, but made the final draw current like crazy. That parasitic from the driver was making the final conduct like gangbusters.

Check or replace that parasitic choke on the driver and let us know what else you see.

We need info to help you solve this.

73 & Happy New Year

Marty WB2RJR

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