[Elecraft] Elecraft Digest, Vol 201, Issue 14

[Jim Brown]

On 1/11/2021 6:29 PM, HP wrote:
> Tom - I will give you some unsolicited advice-- The KRC2 was the worst RFI sucking piece of gear I ever owned.

Simple reason -- it's chock full of Pin One Problems and is unshielded. 
Oh, you say, it's a metal chassis. Yes, BUT -- all the connectors are 
insulated from the chassis by paint, there's no connection between 
pieces of the chassis because junctions are painted, and so on. 
Shielding only works if it's continuous, and if cable shields are bonded 
to the shielding enclosure at point of entry.

One of the members of our CQP team bought two for W6GJB's contesting 
trailer to go along with the W3NQN filters and switch box he also 
bought. I spent a several hours scraping paint, making sure all the 
cable shields hit the chassis at point of entry, and so on.

One good thing I learned about it -- a single coax between the Aux Buss 
and chassis of the K3 and the KRC2 is all it takes for band decoding. No 
RFI issues with K3/KPA500/KAT500 to antennas within 50 ft of the 
operating position.

73, Jim K9YC