Christian, LF
"Ice is an insulator"
If this is true it also means that all lossy trees in the surrounding
may have turned into nearly insulators.
Unless there is ice or frost on my antenna and insulators I usually
have a lower Rtot (more antenna current) in the winter. This is in
line with your findings. It may well be lower environmental losses and
not the ground loss that are resonsible for this phenomenon here as my
antenna has lots of trees in the vincinity.
BR
Paul-Henrik, OH1LSQ
Quoting Alan Melia <[email protected]>:
Wet ground is lossy, ice is an insulator, antenna current is mainly
determined by Rloss ?? If you measure the unloaded antenna with a
bridge, you will measure values for C and Rtotal. Rtotal include
Rrad and Rloss. Rrad is very smal for amateur size amtennas and
doesnt change much. So the Ground loss must be reduced.
Alan
G3NYK
----- Original Message ----- From: "C. Groeger" <[email protected]>
To: <[email protected]>
Sent: Saturday, February 01, 2014 2:51 PM
Subject: LF: Ant current
Hi all
How can one explain that ant current rises when soil is frozen?
Conductivity of water should be much higher than that of ice.
So earth resistance would be higher and the current should drop
when soil is frozen...
73, df5qg
Christian Groeger
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