[Elecraft] Relay type noise with KPA500 and PR6

[Mike K2MK]

Hi Paula,

Do you have a separate receive only antenna connected to the KXV3A RX IN BNC
connector. If yes, then you are possibly hearing the COR (carrier operated
relay) protecting the receiver front end from overload. Disconnect the
antenna connector and see if the noise stops.

73,
Mike K2MK 



K9IR wrote
> I am hearing a rapid relay-type rattling noise from my K3 whenever I
> transmit over 30W barefoot and the PR6 with the ACC option is connected.
> This wasn't happening before I added a KPA500 into the mix. I don't hear
> the noise when power is below 30W barefoot, nor when the KPA500 is inline.
>  
> I am using the KPA500 AUX cable, and the Elecraft Y cable from the K3 so I
> can connect both the ACC option for the PR6 and the KPA500 to the K3 ACC
> port.
>  
> I have searched the reflector for insights on this behavior and why it is
> happening, but not sure anything I've found applies--expept the
> possibility of needing to remove pin 10 from the KPA500 AUX cable--?
>  
> Guidance, wisdom and other assists are most appreciated. Thanks.
>  
> 73 Paula k9ir





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