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LF: An asymmetric feeded full wave dipole for the 630m band

To: [email protected]
Subject: LF: An asymmetric feeded full wave dipole for the 630m band
From: Stefan Schäfer <[email protected]>
Date: Sat, 30 Jun 2012 14:41:17 +0200
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MF,

Another thing. Right now it is 32 °C here. Best place it to stay on the beach or on the top of a hill in the forest. Today i choose the forest.

Accidentally there is my 700m (ish) long earth antenna which has an average height above ground of 8m. Today i want to use it as a dipole for the 630m band. The feed point is somewhere in the middle but not exactly known.

What will the efficiency and radiation pattern be? Is it a dipole or what? EZNEC says it will have 10 Ohm Z=R at resonance (Cu losses + "typical" ground losses).

The WX forcast says there will be much QRN in the evening, anyway.

Maybe someone can listen from time to time on 476.5 kHz? I will listen on the band (+ 500 kHz +-) too and maybe a QSO is possible. Who knows...

If the antenna behaves as a dipole it should radiate E/W, so good chances for UK, PA and DF6NM, DJ2LF...

I'll start now and may be "QRV" in 2 hours or so.

Here, the first time my PA will operate in /p. Nice that it is smaller than a VHS video cassette and allows to generate QRP at high efficiency!

73, CU, Stefan/DK7FC


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