[Elecraft] K3 Sub-receiver use

Richard Ferch ve3iay at storm.ca
Wed May 26 08:29:11 EDT 2010


Guy Olinger wrote:

> That aside, I believe someone using the sub-RX with the TX in split,
> while leaving the main RX to feed the P3, would accomplish the same
> end.

Afraid not, Guy. Cross-band split is not supported, so the envisaged 
mode of operation (main RX on 6m feeding the P3, subRX and TX on HF) 
would not work. You could listen to the subRX on HF, but the TX would 
have to be on 6m.

If the *only* purpose for the panadapter is to act as an indicator of 
activity on the 6m band, you would hardly need all the integration of a 
P3 anyway. There are other ways to tell when 6m is open, ranging from 
www.vhfdx.net/spots/map.php to a simple non-integrated CW Skimmer-type 
display (with a SoftRock, LP-PAN, etc. - this would still require the 
mod to the KRX3).

That said, I think that once you have used an integrated panadapter, you 
might not want to give it up. You might find yourself wanting to use the 
panadapter full-time with the main RX and falling back on other methods 
to tell you what's happening on 6m, perhaps supplemented by leaving the 
subRX on the 6m calling frequency when you weren't using it on HF for 
split operation, diversity mode, etc.

73,
Rich VE3KI


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