[Elecraft] P3 adding rf protection diodes question

Joe Subich, W4TV lists at subich.com
Mon May 19 10:20:30 EDT 2014


On 2014-05-19 9:38 AM, Sam Morgan wrote:
 > It was mentioned to put a couple of diodes across the P3's input to
 > protect it.

Don't!  Back to back diodes will degrade the strong signal handling
of the K3 and the receive inputs already include protection including
gas discharge and a signal level detector that disconnects the input
if the level becomes too high.

73,

    ... Joe, W4TV


On 2014-05-19 9:38 AM, Sam Morgan wrote:
> It was mentioned to put a couple of diodes across the P3's input to
> protect it. Do the diodes need to be 1n34a's or would 1n4148's be ok for
> that application?
>
> I had tried repeatedly to ask Don W3FPR this question off list via
> direct email, but I guess all my efforts have ended up in his spam
> folder?? :-(


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