Topband: Pro3 problem

[StellarCAT]

I've had similar problems - my Acom 2000A would shut down on an Arc fault on 160 when I had the receive antenna (K7TJR 4 Sq) pointed towards the xmit antenna (100' vertical inv-L) that is about 300' away. Only when pointed at it... but then I discovered (the 160 antenna JUST went up on 26Dec09- first time ever on 160) it did this in any direction on 80 (the 4 sq had been working fine prior to installing the inv-L). 

So I made a simple little relay box that connects off the xmit ptt line to the amp - it turns power off to the receive 4 sq - this solved my problem... for you a similar design just disconnecting (and if you want to go so far connecting the RX input to a 50 ohm resistor) the RX antenna line would probably work fine.

g.
Gary K9RX