Hi Wayne
At what approx. RF voltage level sent back into the rx from the
second antenna do we need to worry about additional protection like
external switching or shorting?
Also, what do I hear when the COR activates? What sound? Is this a reed relay?
I operate SO2R and occasionally need to measure to verify safe RF
level into the second rig and would also like use my 2nd K3
(synch-tuned) for diversity rx while tx'ing on 1st K3. An actual RF
voltage level I can use as a measurable limit would be a very useful
parameter.
Jerry W4UK
At 01:57 PM 12/16/2008, wayne burdick wrote:
Dr. James C. Garland wrote:
... When I'm transmitting, does the K3 short the input to the
subreceiver AUX input, or otherwise protect the input from damage? .
Hi Jim,
The KRX3's AUX input is protected by a gas-discharge tube, bleeder
resistor, and carrier-operated relay. It is very unlikely to be
damaged. However, activation of the COR (which you would hear as you
key the rig, etc.) can be disruptive to T-R sequencing. If you hear
the COR relay go on, I'd strongly suggest that you either reduce the
coupling between the two antennas or provide external switching or
shorting (this could be done via the KEY OUT jack on the K3).
73,
Wayne
N6KR
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