[tvtom]

Starting at the top-
- There is about 1 1/2 feet of coax between the DB8 and the mast mounted 8275 preamp
- There is about 75 feet of coax between the preamp and the 8275 power source (mixer is it).
- There is about 2 feet of coax between the preamp mixer and the 100 distribution amp.
- I do not have a VHF antenna so there are no vhf uhf combiners.

- there is about 30 feet from the 100 to my distribution board and the splitter
[correction] - the splitter is a 1 to 4
[correction] - there are 3 TVs and 1 fm radio on the output of the splitter
- the cable length to these is about 25 +/- 5 feet.

<<<<How many feet of cable lay between the antenna and most distant tuner? >>>>
- I assume you mean the TV tuner... adding the above together
1 1/2 feet
75 feet
2 feet
30 feet
25 +5 feet

About 138 feet.

The system had been working pretty well until a while ago... a month, several weeks.... it may have been slowly degrading (like tire tread) and I had not really noticed it. The weaker channels appeared to be weather sensitive and sensitive to different TV sensitivities.

I have moved TV's around on different cables, and moved one to the output of the distribution amplifier (splitter disconnected) and also to the output of the preamp mixer. The results were very similar.

After reading a note from the cable guy, I decided I should have checked the cable between the mast preamp and the antenna. The connectors looked good but I did not check the shield. The shield on the downlead cable was very bad, and is why I replaced it. When the wx clears up I will drop the tower and check that cable.

Thanks
tvtom

PS- I after some wavelength calculations I have decided it is not practical to add the 2 antennas DB8 and 3023 together. It seems I would have to match the mixer within a mm or so to assure summing.

[added] PS2 Last eve (Monday) my weakest channel WNIT 34 (35 RF) was coming in STRONG signal bar way over to almost max. It was raining lightly had been all day.