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
IMG_7675.JPG (3134508 bytes)		 Microprocessor board, power control board, front panel board
IMG_7677.JPG (3583832 bytes)		 Dirt
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"Debugging" power amp tube module
IMG_7682.JPG (2694857 bytes)		 IMG_7683.JPG (2816209 bytes) After replacing bandswitch
IMG_7736.JPG (3631929 bytes)		 In operation
IMG_7738.JPG (3525584 bytes)

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
IMG_7697.JPG (5525678 bytes)		 Then slid it up ramp onto a dolly
IMG_7700.JPG (3840827 bytes)		 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
IMG_7710.JPG (3610362 bytes)		 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
AFSK_3814.JPG (6569041 bytes) 		Flip up the tray
AFSK_3815.JPG (5342713 bytes)		 install AFSK assembly (plate with two boards)
AFSK_3816.JPG (5836679 bytes)		 Plug in ribbon cables
AFSK_3818.JPG (5373450 bytes)
Attach co-ax cables on upper side
AFSK_3819.JPG (6196724 bytes) 		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...

 smoke
AFSK_3820.JPG (5214940 bytes)		 flaming capacitor area
AFSK_3821.JPG (5047492 bytes)