Topband: Polarisation Coupling Loss - was Low Dipoles

Robert Parkes rparkes197 at aol.com
Sat Dec 19 04:50:07 EST 2020


Frank W3LPL raised the subject of Polarisation Coupling Loss as another factor which can affect results and this discussion.  Fortunately such facilities as RBN, WSPR and skimmers are now available to us to help explore the A/B conundrum.
Every since my exploits on 160m back in the 90s, PCL has always been of interest to me so some years ago I raised this subject with W8JI as he had a dipole at 300ft and suggested another orientated at 90 degrees may help solve the riddle, alas it was not to be.

I have often wondered if a suitably designed beacon could be of interest, but beacons below 10MHz are not recommended by IARU, presumably due to bandwidth constraints but the use of FT8 and similar technologies could help overcome some of the concerns.
Food for thought.
73sBobG3REP


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