[Elecraft] K4 recommendation - wait for HD or no?

Ed Cole kl7uw at acsalaska.net
Fri Jan 20 12:08:56 EST 2023


On the subject of two radios operating in close proximity:

I have a K3/10 (12w version) that I use with a KXPA-100 on 6m or HF.

I have noted the noise level of the K3 S-meter rise about one s-unit 
when I transmit on 2m with the IC-9700 + 100w TE amplifier into a 
high-gain 2m vertical about 100-foot away from the 3-element 6m yagi. 
K3 is on 50.125 in SSB mode, but both radios physically on the same table.

I've not been overly concerned, as trying to receive 6m while 
transmitting on 2m is not a normal operating situation for me.

K3 is updated with latest Synthesizers (two).

I suppose cable radiation could be the cause vs antenna-antenna pickup. 
Also have not tested IC-9700 harmonic output.  Testing with K3 connected 
to my 500w Bird term probably would reveal this.

Anyway thought it curious behavior for the K3 (SN 4340).

73, Ed - KL7UW
may be sort-term situation as the shack will be moved into a new 
location in a couple months with new cables and grounding.


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