Topband: Interesting Observation

Brian Miller brianmiller at
Sat Feb 13 14:48:57 PST 2010

Hi Bjorn

Just reading through some of the older postings here and noted your 

I have an inverted L here with 6 short radials about 15 metres long 
and 2 meters above ground. They are tuned to resonance with an 
inductance at the the feed point. I notice no obvious change in the 
resonant frequency  during wet weather. The additional radials 
(compared to two) may be beneficial in this respect. Another factor 
that may be relevant is the very poor ground at my QTH.

73, Brian ZL1AZE

On 3 feb 2010, at 19.11, Edward Swynar wrote:

> Lo & behold, each "L" now tunes to 1914-KHz, +/- 2-KHz---an upward 
> increase
> of some 44-KHz!

My inverted L has two elevated radials and I see a shift of -30 kHz 
when its raining. The 4" of snow that fell this week dropped resonance 
about 5kHz. I am sure frozen ground (less moist) is the reason for the 
increase in resonance that you see.

73 de Björn,

UR RST IS ... ... ..9 QSB QSB - hw? BK 

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