We used K3S radios at a Field Day site. Operated 2 radios on the same
band with antennas less than 50 yards apart. No issues. Just be sure
you use the ATTN and set the RF Gain correctly <<<Very important, and
make sure the AGC parameters are not contributing to your issue. Also,
don't use the NB and maybe only a little bit of NR. The radio is really
bullet proof in these regards.
As to the K4 the K4HD model is the top end for selectivity.
Now if your ham neighbor has a radio that is producing crap, {which many
are, See the Sherwood article in Nov QST} wide band noise, and
splatter, nothing but the power switch will cure the issue as the
objectionable signal is in the Pass Band of the receiver. Just
remember, no amount of filtering or selectivity will eliminate a signal
in the passband.
73
Bob, K4TAX
On 10/31/2019 4:51 PM, eric norris via Elecraft wrote:
Can somebody tell me which of the K4 models will produce better blocking of
extremely strong (S9+20 to S9+40) nearby in frequency signals than a K3S? Is
this blocking gain compression? I'm trying to plan a future station upgrade
and I have ham neighbors.
73. Eric WD6DBM
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