Join Date: Jun 2002
Location: east central wisconsin
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I have FOUR antennas pointed in different directions. It CAN be done. However, you must understand several issues. First, combining 2 antennas on a splitter/combiner will cost you over 3db in signal strength. This means that you lose over 1/2 of your signal.
Secondly, multipath may be an issue, but more of an issue will be co-channel and adjacent channel interference. The multipath would occur if one antenna picks up a straight signal while the other antenna picks up a weaker signal from the rear or side. This can confuse the tuner into not knowing which signal is desired, or it could cancel out the signal. Either way, you may lose the channel entirely, especially with a digital signal. Co-channel interference occurs when 2 stations broadcast on the same frequency. This is not a problem in one market, but when aiming for 2 different markets, it becomes possible, especially if a 3rd market in the same path as one of the main target markets is receivable. Adjacent channel interference is a very good possibility. This is when 2 channels are right next to eachother and have different signal strengths. the stronger signal may drown out the weaker signal. This is not much of a problem with one market, but becomes fairly common when looking at two markets.
If you are only looking for one market, plus one channel in another market, then it can be simple if there are no channels in market #1 that are closer than 3 channels away from the desired single channel in market #2.
Point your main antenna towards market #1.
Point a second antenna that is capable of easily receiving the single channel from market #2.
Join them with a Channel Master "Jointenna". These are channel specific and must be special ordered from Warren Electronics.
Finally, if it works out that all of the desired channels in market #1 were UHF, and the single channel in market #2 was VHF, then all you need is a good UHF/VHF combiner.
If the jointenna or the VHF/UHF combiner are used, there will be only an insertion loss of about .5db. You will have double the signal you would by just combining 2 antennas with a splitter.
I hope this helps.