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3 Antennas/2 Directions/1 Feed?  

post #1 of 5
Thread Starter 
I have two horizontally stacked RS-2160s pointing towards Mt. Wilson (Los Angeles, CA), which feed into a 2-input combiner and then into a mast-head pre-amp (CM 7775).

I get a very weak signal from some San Diego stations (around 110 degrees from the LA stations) and I was wondering what the impact to the LA stations would be if I replaced the 2-input combiner with a 3-input combiner and mounted, say, a Silver-Sensor on the same mast, pointing towards the SD stations.

I suspect that this would cause phase and multipath problems with the LA stations but has anyone ever actually tried this?

While it's important to me to get the LA stations clearly, I'd really like to be able to receive KPBS (San Diego - one of the best HDTV stations in the US) without breaking out a separate coax run and tuner input.

Anyone have any opinions?

Andy.
post #2 of 5
How about a rotator?
post #3 of 5
Thread Starter 
That would be ideal, but I don't have room for a rotator. My dual 2160s are statically mounted.

Thanks for the idea though.

Andy.
post #4 of 5
Do not combine antennas. Just as you indicate, you will have problems.

Put up a single hi-gain antenna and use a rotator. Yes, it is inconvienent, since you won't be able to scan all the channels easily, but it is the sacrifice you will need to make to get all of the stations.

Before anyone says anything, you can combine antennas, if one is a VHF and the other UHF.
post #5 of 5
You should look for a Channel Master Jointenna. It is an antenna coupler designed for a particular channel. You would connect the combined Mt. Wilson antenna output to one input of the Jointenna and the KPBS antenna to the other. At UHF frequencies, the bandwidth of the Jointennas is several channels, so you might have a multipath problem if one of the Mt. Wilson stations is adjecent channel to KPBS.

http://www.channelmaster.com/Pages/cjs1.htm
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