[Elecraft] K3 Upgrade Kit Question

[K2MK]

Hi Joel:

The upgrade to improve RF immunity affects two different I/O boards. The 
board with the audio connectors on it and the board with the DB9 and DB15 
connectors. The ALC mod kit for $20 is a Rev B version of the board with the 
DB9 and DB15 connectors. And I don't know if the RF immunity mod was done to 
that board or not. Someone who has the Rev B board in front of them would 
have to comment on whether choke L1 has been jumpered across (or perhaps 
removed entirely).

73,
Mike K2MK

Joel R. Hallas
Fri, 06 Mar 2009 13:58:46 -0800

I appreciate that the REMIOUPGD upgrade kit resolves ALC and band data
pull-up issues -- neither of which are of interest to me at the moment.
However, I wonder if the new board also includes updates to resolve the RF
pickup problems in lines connected to the K3 rear-panel MIC, PHONES, PC
IN/OUT and RS-232 rear-panel connectors?

If so it would, IMHO, be worthwhile even if I never have anything that reads
band data.

Regards, Joel
Joel R. Hallas, W1ZR