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Old 25-Jan-2010, 3:23 AM   #5
mtownsend
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Join Date: Dec 2009
Posts: 632
Quote:
Originally Posted by rossandmarita View Post
How many Db before a signal is to strong and cause overload?
Any time the "Pwr (dBm)" numbers get into the -30s or higher, it's a concern. Since amps boost everything in the spectrum (not just the one channel you're watching), you must consider the total RF energy going into it. Many people don't even realize that a nearby FM transmission can cause their amp to overload even though their TV signals might no be that strong. Any signal within the amp's operating frequencies can contribute to overload. Lots of channels in the -40 dBm range could add up to be just as bad as one -30 dBm channel (it's a logarithmic scale).

I'm seeing multiple TV signals in the -10s and -20s range (local analog broadcasts) on your tvfool report. Considering how strong these are and how many there are, it seems like this is beyond the signal-handling capabilities of most amps out there..
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