| To: | "Mike & Coreen Smith" <ve9aa@nbnet.nb.ca> |
|---|---|
| Subject: | Re: Topband: 160m dethroned? 600m the new top band? |
| From: | DAVID CUTHBERT <telegrapher9@gmail.com> |
| Date: | Mon, 13 Feb 2012 08:27:33 -0700 |
| List-post: | <topband@contesting.com">mailto:topband@contesting.com> |
I believe the proposed rule is 2 watts ERP. The typical 70 x 50 foot top band inverted-L can be base loaded on 500 kHz using a 500 kHz inductor. Given an inductor Q of 300 and ground loss of 20 ohms we have a radiation efficiency of 4%. Drive the antenna with 50 watts and you're on the air at the legal limit. Dave WX7G _______________________________________________ UR RST IS ... ... ..9 QSB QSB - hw? BK |
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