Radio Road Which tuner to get and getting the most from it. Thank God, for the radio!

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Re: Will a yagi improve multipath performance?

64.253.163.66

Posted by lipmanl on January 3, 2007 at 12:56:18

In Reply to: Will a yagi improve multipath performance? posted by meisterkleef on January 3, 2007 at 08:36:54:

There's a lot of people who know more than I do about FM issues, but none of them has answered yet, so I'll give it a whirl.

The signal you want originates 40 miles away. Whether a yagi will limit or eliminate multipath depends on how big the angle is between the line that connects your antenna and the transmitter, and the line that connects your antenna and the reflective source of the multipath. If the multipath occurs pretty close the the transmitter (say, a building or mountain in the same town as the transmitter) your antenna will see both transmitting antenna and the reflector in the main lobe. If the reflection is caused by some source at a relatively large angle, then a yagi should help quite a bit. You may also find that the best elimination of multipath occurs when pointed slightly away from the source, as that may differentially attenuate the reflection.

You could also try using multiple identical antennas arranged so that the desired signal reinforces and the multipath signal cancels.

Here are some more out-of-the box options:

Stick the antenna in a big tree, paint it green, and hope no one notices.

Build a big, ugly radome, and when the neighbors complain point out that its within code and you didn't want to upset people by putting up an antenna. They may relent and waive the rule for you. That way you get what you want and it only costs you a few tens of thousands of dollars for the radome.

Does the station you are interested in netcast?

If you have a friend in the town with the transmitter, put a tuner and computer there and netcast to yourself.

Move to somewhere inbetween the stations you want to listen to.

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