To: | rick darwicki <n6pe@yahoo.com> |
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Subject: | Re: Topband: Antennas |
From: | DAVID CUTHBERT <telegrapher9@gmail.com> |
Date: | Thu, 13 Dec 2012 05:52:11 -0700 |
List-post: | <topband@contesting.com">mailto:topband@contesting.com> |
Some of us have little choice for low band antennas. I am currently using a Tarheel 200A screwdriver antenna with a 24' whip in an HOA neighborhood. That gives me a 30' base loaded vertical over 90 radials (12 to 24 ft long). The input impedance 160 meters is 13 ohms and with a radiation resistance of 1.3 ohms the radiation efficiency is 10%. With 500 watts I have worked all continents and have fun on top band. While I don't have a big signal the real problem the S-9 receive noise. Dave WX7G _______________________________________________ Topband reflector - topband@contesting.com |
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