[Elecraft] New P3 TX Monitor....unusual behavior with SWR (at times)

[Phil Hystad]

Does this happy to anyone else with the new TX Monitor…?

My TX monitor sensor sits between my KPA500 and the KAT500 and since I have installed it and had it up and running I have had more than my average spurts of high SWR.  For example, a key down may cause this spurt but just a moment later the SWR is fine at is usual 1.4:1 or so for this particular antenna.  I have only noticed this on 80-meter band and I have my KAT500 fully programmed for each segment and also I run the KAT500 in manual mode.  

I only see this on CW but that is the only thing I have done since having the TX monitor set up except for one time of saying “test, test, test” into the mic to see the TX SSB waveform.

Usually, I don’t have any hassles with high SWR spurts on this antenna with the KAT500 and that is why I am thinking there may be some new kind of interference with the sensor in line like maybe brief periods where the Load side which is input to KAT500 does not look like 50 ohms.

Thanks for your comments.

73, phil, K7PEH