Re: Another morning of good TP reception


Gary DeBock
 

Richard, John, Kirk and the Group,
 
     One of the most profound discoveries made by Ultralight DXers this past year is how local sunrise and DX station sunset propagation peaks (and vice versa) can combine to produce phenomenal stock Ultralight TP and TA receptions.  This gray-line concept is not new, of course, but when all you have going for you is a 1.5" loopstick, it makes a critical difference to have as much propagation help as possible.
 
     Guy Atkins' reception of the Radio Farda-1575 TA at Grayland, Washington on a stock SRF-39FP was a perfect example.  Timing local sunset with the DX station's approximate sunrise, Guy had both peaks coincide to give a phenomenal propagation boost.  Richard Allen's first reception of JOUB-774 in Oklahoma on a stock SRF-T615 was probably similar, in which he had local sunrise coincide with the Japanese sunset.  Of course, having both A and K indexes near zero (like Guy did) certainly helps.
 
     With the local sunrise here on the west coast currently coinciding with deep darkness in Japan and Korea, many of our late November sunrise TP "peaks" are very weak indeed.  But Oklahoma has sunrise much earlier than the west coast, making their sunrise propagation peak coincide more closely with the Japanese sunset propagation boost.  No wonder Kirk and Richard are having TP-chasing fun, especially during good solar conditions.  Investigation of gray-line propagation (or the lack thereof) between Oklahoma and TA transmitter locations probably will reveal some clues as to why TP's are currently easier for Richard to receive than TA's.
 
     73,  Gary.
 
      



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