AN/URT-3 Restoration Project - LV supply

Restoration Progress pages

RFA - RF amp

LLRM - 100w Modulator

RFO - Oscillator

            LVPS - Low Voltage power supply

MVPS - 100w HV power supply

Transmitter Cabinet

            HLRM - 500w modulator

HVPS - 500w HV power supply

Booster Cabinet


Acquired 3/19/2008 - a 500 watt, 136 tube, autotune HF AM/CW/FSK transmitter
page 1 - initial cleanup

LVPS - Low Voltage power supply

p1010025.jpg (57343 bytes)
a little dirty but looks OK - no mice!
p1010028.jpg (58998 bytes)

p4140004.jpg (57594 bytes)
4/14/08 - onto the workbench for cleaning and checkout
p4140005.jpg (69943 bytes)
p4140006.jpg (61257 bytes)
filter cap area
p4140007.jpg (59309 bytes)
LV rectifier tubes
p4140008.jpg (63971 bytes) p4140009.jpg (62585 bytes)
p4140010.jpg (63194 bytes) p4140011.jpg (59346 bytes) p4140012.jpg (59261 bytes) p4140013.jpg (63411 bytes)
p4140014.jpg (61998 bytes) p4150017.jpg (37842 bytes)
4/14/08 - power applied for the first time. Relays click & timer motor runs - cool!
However, I figured I might as well go ahead and strip this unit down to clean it up.  
p4150004.jpg (59003 bytes) p4150005.jpg (57851 bytes) p4150006.jpg (61154 bytes) p4150007.jpg (62518 bytes)
p4150008.jpg (61966 bytes) p4150009.jpg (62145 bytes) p4150010.jpg (61851 bytes) p4150011.jpg (62129 bytes)
p4150012.jpg (61011 bytes) p4150013.jpg (56448 bytes) p4150014.jpg (62164 bytes) p4150015.jpg (60443 bytes)
p4150016.jpg (62139 bytes) p4150017.jpg (62322 bytes) p4150018.jpg (59730 bytes) p4160019.jpg (60779 bytes)
p4160020.jpg (59483 bytes) p4170021.jpg (57728 bytes)
front section clean and ready for reassembly
p4170022.jpg (61553 bytes) Front section is mostly done - the rear is next.
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4/20/08 - choke connections - before disassembly
p4200014.jpg (62152 bytes)
rectifier tube area
p4200015.jpg (61945 bytes) p4200016.jpg (62053 bytes)
power xfmr connections
p4210027.jpg (60641 bytes)
connector at rear
p4210028.jpg (56853 bytes)
4/21 disassembly for cleaning rear chassis area
p4210030.jpg (58566 bytes) p4210031.jpg (58576 bytes)
I left power xfmr in place and cleaned around it
p4210032.jpg (57214 bytes)
cleaned chassis
p4210033.jpg (58685 bytes)
oops - I spent a lot of time reinstalling these in the wrong place! need to shift left one mounting hole.
p4210035.jpg (59140 bytes) p4220002.jpg (55763 bytes)
Resistors moved and rear chassis cleaned
p4250003.jpg (62087 bytes)
reinstall chokes
p4250005.jpg (58364 bytes)
reinstall sockets
   
REASSEMBLED AND READY FOR OPERATION - 4/26/08
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