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The original message has been attached to this so you can view it (if it isn't spam) or label similar future email. If you have any questions, see the administrator of that system for details. Content preview: 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. [...] Content analysis details: (-0.0 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at http://www.dnswl.org/, no trust [213.250.81.203 listed in list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record X-Scan-Signature: 1c38f63d01970a2bf149f660c9cb2a37 Subject: Re: LF: Re: Ant current Content-Type: text/plain; charset=utf-8; format=flowed; DelSp=Yes X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.3 required=5.0 tests=NO_REAL_NAME autolearn=no version=2.63 X-SA-Exim-Scanned: Yes Sender: owner-rsgb_lf_group@blacksheep.org Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group X-SA-Exim-Rcpt-To: rs_out_1@blacksheep.org X-SA-Exim-Scanned: No; SAEximRunCond expanded to false 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 : > 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" > To: > 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