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1. LF: 417km on 500kHz ....without an antenna (score: 1): Author: Roger Lapthorn <[email protected]>; Date: Tue, 10 Aug 2010 22:21:46 +0100; Just been received in Holland by PA0A on 500kHz WSPR when using just the 20m spaced earth electrodes! My ERP is, I believe, around 250uW and I'm amazed that this non-antenna is able to work so well.; /rsgb_lf_group-archives/html/rsgb_lf_group/2010-08/msg00723.html (10,187 bytes)

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