[mythtv-users] Antenna attenuator question

Brian Wood beww at beww.org
Mon Jun 30 20:02:01 UTC 2008

On Monday 30 June 2008 13:55:51 Alen Edwards wrote:
> > I may try the re-aiming
> > approach after all.  I am beginning to think I have some multi-path
> > problems now that the antenna is on the roof, and that is what is giving
> > me the problems with NBC.
> I would not think that the problem because you said that when you
> unplugged the power supply for the amplifier the signal was OK.  The
> amplifier is not going to make the multipath worse.
> If you happen to have some extra splitters around, you can use them as
> attenuators.   They will drop about 3.5dB each for a 2-way splitter.  If
> might be worth putting one in and seeing if it changes at all.

Just make sure that any unused outputs are terminated in 75 ohms, otherwise 
the response curve will resemble the Alps, and it might even increase the 
level on some channels.

But I still say the best solution is not a broadband attenuator in this case, 
you want to drop only the high-level channel. In markets where this is a 
problem local TV shops often carry such units, often pre-tuned to the 
local "problem channel".


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