[Elecraft] Topband RF feedback problem (KXV3 RX ANT isolation)

[Bill W4ZV]

Stewart G3RXQ:
>Are you using a separate RX antenna ? There is a recognised issue
with the KXV3 and insufficient isolation  that can give rise to
spurious oscillations.

Barry N1EU:
>As I reported previously, I had to install an ICE 196 RF Limiter in the
Beverage feedline to prevent my Acom from generating "ArcFault" errors on
160M.

There's definitely a problem with RX ANT isolation on the KXV3.  I
immediately experienced it when I first used my K3 on 160 in early December. 
I temporarily solved it with an RF choke on the Beverage input but the real
cure is a KXV3 mod from Elecraft (now installed).  Contact Elecraft for the
mod.  

I had used exactly the same RX ANT setup with a TS-930S, FT-1000MP and Orion
with no problems so this was definitely a problem unique to the K3 (now
solved).

73,  Bill  W4ZV
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