Jan,
Check your antenna selections - ANT1 vs. ANT2 or RX ANT on vs. off.
The amount of attenuation you hear is about the same as the isolation
between the antenna selection in the K3 (40 to 50 dB).
The antenna selection is on a per band basis.
73,
Don W3FPR
On 3/15/2015 8:41 PM, Jan wrote:
I have a K3 that works fine on all bands except 75/80 and 160. I
have a backup rig, an IC-730 from the 1980's, that has 75/80 but not
160. I did an A/B with the two rigs on 80 meters, and both the
S-meter and my ears tell me that signals are 5-7 S-units weaker on the
the K3. S/N is clearly worse on the K3 than on the 730.
Can someone clue me as to how to chase this down? Even if I have to
send a board back to Elecraft, I would like to do that rather than
send the radio.
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