Harris RF-350K system - AN/URC-119(V)
- Hamfest acquisition November 2021

System Operator's Reference Card  
System Fault Reference Card 
RT-1446/URC Organizational Maintenance Manual 
RT-1446/URC Depot Maintenance Manual

RF-350K Transceiver - RT-1446/URC

Home from the hamfest
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13.6vdc power supply for RF-350K IMG_7469.JPG (5045464 bytes) IMG_7472.JPG (5350052 bytes) IMG_7481.JPG (5801910 bytes)

1kw RF-353 amplifier - AM-7224/URC

IMG_7674.JPG (2583550 bytes) Busted bandswitch shaft
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Microprocessor board, power control board, front panel board
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"Debugging" power amp tube module
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IMG_7683.JPG (2816209 bytes) After replacing bandswitch
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In operation
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RF-354 power supply for amp - PP-7913/URC

I used a "come-along" winch to haul it up a ramp on the back steps
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Then slid it up ramp onto a dolly
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IMG_7701.JPG (2991393 bytes) Then transferred it to a lift table
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IMG_7708.JPG (2962176 bytes) IMG_7709.JPG (5070179 bytes) Interior - Front view
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Interior - Rear view
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Ready for TEST - after repairing the exciter bandswitch relays and replacing about 70 tantalum capacitors...

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Yay! - it all works now
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I used this regularly for RATT and voice for about 2 years with one more tantalum capacitor failure (I guess I didn't get them all)
In Dec 2023 I finally got an NOS AFSK assembly to install

Before install
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Flip up the tray
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install AFSK assembly (plate with two boards)
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Plug in ribbon cables
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Attach co-ax cables on upper side
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READY - for power-on test

RESULT - lots of smoke!

NEXT STEP - remove and replace all these tantalum caps too. I gambled and lost.....I hate tantalum caps...

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flaming capacitor area
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