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SX-111, 120 VAC on Antenna Terminal!

Apr 20th 2015, 21:21


Joined: Feb 15th 2006, 09:09
Total Topics: 0
Total Posts: 0
I just recapped an SX-111 and found I have 120 VAC on the antenna terminal (not on the chassis). I don't know if this was a pre-existing condition since I didn't apply power before recapping it.

Other than that issue, the receiver appears to be operating normally. Can anyone suggest where to begin troubleshooting? Clearly I need to recheck my work, and the next step is to check bypass caps which were not replaced.

Any input would be appreciated!

- Jim Branch
Apr 24th 2015, 12:57


Super Moderator

Joined: Apr 4th 1998, 00:00
Total Topics: 0
Total Posts: 0
It is likely that you need someone to do a close visual inspection to sort it out--perhaps even drawing a schematic of the circuitry connected to the antenna terminal. It is quite possible for ham gear to be extensively modified by former owners. Once in a while we hear of ideas that are actually quite dangerous--so much so that we don't want to repeat them here.

Zack Lau W1VT
ARRL Senior Lab Engineer

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