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Re: LF: Loop comments (again)

To: [email protected]
Subject: Re: LF: Loop comments (again)
From: "jannsen" <[email protected]>
Date: Thu, 14 Feb 2002 19:21:07 +0100
References: <[email protected]>
Reply-to: [email protected]
Sender: <[email protected]>
Dave Sergeant schrieb:

..............
The only effect seen is temperature coefficient change in the
 matching
network capacitors - between a cold winter morning and midday summer the
 resonance
moves up by a few hundred Hz. ..............
Hi Dave and other loop freaks,

I observed the same conc my copperpipe-rotary-loop (only five metres of diam) but vice versa: from summer to winter the resonance moved up in frequency.
I`m building an other W/E-E/W loop this weeks:
two turns of 3mm-litz-wire pitch 40mm;
vertic 15m and horiz 50m, two metres above ground tuned by
abt 27nF high quality caps and excited by one abt 3/4 turn manually variable
in length. pitch to the loop turns: 50mm. mut reactance abt 17 ohm.
If and when it is built, I have to make FS meassurings over several
weeks not only of the waves eradiated by the new loop but for
comparism purposes also of those from the other antennaes.
sri my endfed 400-m-longwire has been wrecked by one of our bulls using the
middle mast as a scrubbing brush.
regards
Uwe/dj8wx



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