Subject:	NEED TVI ADVICE
Date:		21 Jan 1998 18:28:23 -0800
From:		"Tim Coad" Tim_Coad@smtp.svl.trw.com
To:		"VHF Reflector" vhf@w6yx.stanford.edu


Hi all,
I am having problems getting into a neighbors TV on another street. (about
300 feet away)

At first the problem was horrible. 10 watts on 6,2, or 432 would take out
all channels.  Turns out he had a TV preamp. He took it out of the line and
now the problem is only on 6mtrs.  I am used to 6 meters bothering channel 2
or 3, and with just 10 watts I do bother his channel 2, but with 100 watts I
take out his UHF channels.  He has a high pass filter and a 50.125 notch
filter I got from someone here on the net.

Questions:
1.Since I am taking all of channels out, could this be common mode
interference?  One thing to note is that I dont bother him at all when my
ant is 90 degrees off of him. Unfortunately he is to the east of me!!!


2. I am using a ten-tec transverter and a TS 430 to a 100 watt brick.
Are ten-tec transverters pretty clean? I am not using any filters.
Is there a good low pass filter I can buy that wont attenuate 6 meters?
And will it help?

3. What about that JA homebrew Band pass filter? 
 

The thing that really throws me is that I bother every channel.  He says he
has the same problem on his other TV as well.

PS. he is a ham (shack on the belt) and we have a pretty good relationship
so far. He got on his HT and we walked through every channel and transmitter
combination. So he is very willing to help me experiment.

73   Tim - NU6S