very very strange - question involving B&T modulator

[Adam]

I'm only a few blocks from the stadium, so that makes sense. If it's combining with my ch2, to show up on ch3, then wouldn't it be around 120MHz?

Even though the game is long over, and there's no more audio signal on ch3 like before, I'm still getting that weird video signal on ch4, that must be caused by something else.

[jr_tech]

Originally Posted by Adam

I'm only a few blocks from the stadium, so that makes sense. If it's combining with my ch2, to show up on ch3, then wouldn't it be around 120MHz?

Even though the game is long over, and there's no more audio signal on ch3 like before, I'm still getting that weird video signal on ch4, that must be caused by something else.

I don't know if any "remote" transmitters operate in that range*... I was thinking of something like the second harmonic of your modulator interacting with the remote, to produce the signal on ch 3... would have to know the frequency of the "remote' transmitter to see if that would work out. What are the call letters of the station involved? Perhaps I can look up the license for their remote transmitter on the FCC site.

As far as the bars on ch 4...are you near an airport? Many use a 75 mHz (between ch 4 and ch5) "localizer" signal at the end of the runway. These are usually pretty weak, and I believe they are being phased out, but still a possibility.

Just another WAG,
jr

*This Marti RPU (remote pick up) transmitter, will go down to 135 mHz:
http://www.bswusa.com/proditem.asp?item=RPT15-2
.