[Elecraft] Audio lost in SUB RX after mods

[Björn Mohr]

Hi gang,

Coming home after the JW trip I thought it was a good time to do the
Elecraft recommended mods. After doing the mods, I lost the audio in my SUB
RX. It didn't happen right away, but after a few hours use. The mods I did
was;

   - K3 AF OutPut Mod
   - K3 AF OutPut Mod
   - Improving the Immunity of the Rear-Panel RS232 and Audio Connectors to
   RF
   - K3 AF Mod
   - K3 Negative ALC and Ext Band Data Pull-up Mods

In addition to this I installed the DVR and upgraded FW.

I have now been tracing down the problem to the Remote I/O module (the upper
one with D-subs) as audio from the SUB RX comes back as soon as I remove
this module. It doesn't matter if the KI03 Audio I/O module is installed or
not, the problem appear as soon as the Remote module is inserted.

Has this happened to anyone else doing these mods? I suspect that it is
related to one of the audio mods, but at this moment everything looks like
it should according to the mod instructions.

Any input appreciated!

73 de Björn, SM0MDG
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