Need explanation for distribution amp behavior

brantlew

brantlew

Thread Starter
SatelliteGuys Family
Mar 12, 2007
53
0
Austin, TX
Hey installers, I have been wiring a home satellite/OTA distribution system in my home and it has been quite a journey since I knew nothing about it 2 months ago. I have some unexpected behavior from one of my amps and was wondering if someone could explain it to me.

I basically have a 1-in/4-out +8dB distribution amp to disperse my OTA antenna to the rest of my home. I selected it specifically because it has low isolation between the output posts (-10dB) and I am using it to backfeed a signal from my satellite receiver (VIP622) to the rest of the home. There is no question that the amp greatly improves my OTA signal. It's very stable now, but my backfeed is not so great. Here's my question...

Why do I see a great deal more noise in my backfeed signal when I power the amp versus when I turn the amp off and let it function as a passive splitter? It's fairly annoying because I am having to boost the hell out of my backfeed signal with an additional amp to try and clear up the signal, but regardless of how much I boost the backfeed, always when I pull the plug on my distribution amp the backfeed signal is cleaner. Thoughts?
 
S

shadowwalker

Supporting Founder
Supporting Founder
Aug 12, 2004
170
0
Have you tried changing the back feed channel?
 

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