This might be a good opportunity for me to give my limited experience
with bi vs uni directional short (400 feet) beverage in Stew Perry. I
put up a 400' SE beverage just before the test. I had various tips on
Topband about the termination value. Some said they had unterminated
400' beverages and they worked fine. Others suggested that it would be
so short that I would need to terminate it to get a useable s to n
ratio.
I started Stew Perry with it terminated with 600 ohms. (Just a guess at
an appropriate value.) I was able to work the Caribbean stations
perhaps a little earlier than with the transmit antenna. (Inverted V)
There was a distinct advantage on receive to the Caribbean. At about 11
p.m. I removed the termination. I never found any signal afterward that
was better on the Beverage than the transmit antenna.
While such a one-shot test is of limited scientific value, it sure did
convince me to terminate that Beverage!
Chuck, W5PR
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