This reminds me of an incident many years ago when Industry Canada (then called DOC) contacted us re a ham 2 meter mobile interfering with aircraft communications. To make a long story short, the local ham wanted more power out of his transmitter and had physically adjusted the low pass filter (the push and squeeze method) for more output power. He also defeated the purpose of the filter and all kinds of crap was getting through as well. His Watt meter showed some more power but since it is essentially a non frequency selective device, it didnt care what was going through.
Sad.. Very sad. :)
Which brings up another story of a tech who could not match a ¼ wave mobile antenna to a transmitter no matter how he cut the whip. Again the Spec A showed that the TX was badly spurious and the antenna was showing lots of reflected power because of it. Once the PA was tuned properly so that the spurious signals disappeared, the antenna matched just fine. Sometimes you have to use the proper test equipment to see what is going on.
Very very true! I spend a lot of time and money picking up test equipment for that reason. If I can't see, I can't work.
I have been reading these post for a couple of days now and seen in the original post that you are loosing 110 watts in the duplexer. Maybe Im the only one that thanks this may have something to do with the problem.
Yikes, I didn't catch that in the original read either! That is VERY significant! 1-1.5dB maybe, but not >3dB!
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