WSPR 2m TVI
#3
Hello Nev,
okay now the fun begins, was the Kingray filter ahead of the mast head amp or after it? If it was not in front of the mast head (between antenna and amp input) then you could expect less effectiveness as it might be the mast head amp is seeing an overload condition from the 144.489 RF.

As a test could you try some dummy runs on CW carrier or FM (unmodulated) on differing frequencies across the 2Mx band to see if there is any particilar part of the band is worse or better. I am thinking it might be worse as you move up the band as you will be getting closer to the TV freq.

I have a similarly weak TV signal at home but no translators we can use and at times we loose free to air all together and have to rely on a VAST satelite feed.

Depending on how cluttered your horizon looks ( I look into a ridge at home for TV ) then a change of antenna for the TV may bring supprising results. We went from a long boom yagi to a modern version of a phased array, which yielded us amazing improvements.

With one of those kingray filters in line, before the mast head I can run full power on 50 & 144 with no scream from inside the house, I took the filter out for a few weeks when we changed antennas to the phased array and within days was in the bad books from even running 25 watts on SSB. You can guess it did not take long to put the filter back in line. Big Grin

Hope my rambling helps.
Regards,
Peter, vk5pj
Peter Sumner, vk5pj

You have enemies? Good. That means you've stood up for something, sometime in your life.
- Winston Churchill
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