[Elecraft] K2: OK to use a bypass cap on the key?

Rick Bates, WA6NHC happymoosephoto at gmail.com
Fri Jun 6 12:19:06 EDT 2014


Wouldn't it be of higher concern to keep (greatly reduce) the RF out of the shack first?  That would eliminate the need for bypassing the key and may help with your click issue.

What happens with lower power?  It there is no click and the key operates normally, that's a HUGE hint you need better RFI work.

Rick, WA6NHC

iPad = small keypad = typos = sorry ;-)

> On Jun 6, 2014, at 9:09 AM, w2bvh <w2bvh at comcast.net> wrote:
> 
> On my K2 Is it ok to put a 1 - 10 nF bypass cap across my straight key?
> 
> I've got a 6M KW amp and evidently rf was getting into the key line at power levels over ~350 W and keeping the system keyed all the time.  Three turns on  the keying wire (mini zip cord) through a split bead fixed it, but I'm getting on air comments about key clicks.  I'm going to switch to RG174 on the key and intend to add 1 - 10 nF across the key terminals, if its not harmful to the K2.
> 
> 
> 73,
> Lenny W2BVH
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