Like all zero-I.F. (or nearly zero I.F.) transceivers, the KX3
radiates a small amount of local oscillator (L.O.) energy backwards:
through the mixer, and out the antenna jack.
Normally this is not a problem. However, if you have another rig in
the same location, with the two antennas not far apart, you'll hear
the KX3's L.O. signal when both rigs are tuned to the same frequency.
If this is a problem, all you need to do is turn on the KX3's
isolation amp. This has no impact on performance, but it does add
about 15 milliamps to receive-mode current drain, so you should only
do this when necessary.
The isolation amp is turned on using the RX ISO menu entry.
73,
Wayne
N6KR
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