I recently installed the TX monitor in my P3 and have a discrepancy
with the SWR reading between it and the K3
with a dummy load connected the P3 and K3 read 1.12 and 1.0
respectively a level of error that is to me quite acceptable.
however when connected to an antenna I will see the SWR on the K3
often close to 1:1 when the P3 will show up to a 1:2. as the SWR
climbs above 1:2 on the P3 the K3 reading will track it fairly
closely but about a level of 1 below. example
K3 1:1 P3 1:2,
K3 1:1.5 P3 1:2.5
K3 1:2 P3 1:3 and so on
Note that this is done with the KAT3 bypassed of course.
it made me wonder which is correct. so I put in a meter. old but
faithfull KW electronics meter seems to track much closer to the P3's
reading which makes sense since the chances that my dipole would have
a wide are at a solid 1:1 match before climbing as I move away from
resonance makes me wonder if the K3's SWR readings are out of
calibration and if this can be adjusted. my concern is that I may
be excepting the SWR from the KAT3 when it may be in fact a little
too high for the amps safety.
The power readings from both seems to be quite close.
Any thoughts?
David Moes
VE3SD
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