This session was a bit noisier here in Texas than previously observed. This noise manifested itself as less prolific S/N reports on a variety of skywave paths. The geomagnetic conditions have been relatively quiet and the Bz is pointing slightly to the South. Solar wind velocity is low, averaging 370 km/s. DST values experienced the beginning of a pronounced decrease:
Merv, K9FD/KH6 / WH2XCR, reports that a hurricane may be taking aim for his QTH. I don’t think there is any data for 630-meter activity in the eye of a storm like this and given the history of terrestrial weather impacting propagation in the Pacific, this could provide some interesting data. Merv offers the following comments:
“John, this may get nasty yet, the hurricane is now changed path and
headed right at us, they show a lot of computer models and about
half or more of the tracks show direct hit, and possibly Maui and Molokai
but still time to shift course as they do on occasion..
Wonder if anyone has tried 475KHZ propagation during a hurricane..
Will keep operating as long as the antenna is in the air..
And electric power is on.
They are now saying it will be here Sunday or Sunday night, depending
on the path.
GUess I better make a run to town for water, have plenty toilet paper and
groceries to hold me for a month or so. LP gas for my camp stove etc
Batteries I do need.
But no worries, they change the course on these things every few hours..
73 Merv reporting from hurricane central with a 2500 mile swim to the next
land of safety. hmmm”
Ken, K5DNL / WG2XXM, reports that he decoded four WSPR stations including VE7SL and was decoded by seventeen unique stations including new station KI4ENY near San Antonio, Texas and 25 decodes from WH2XCR, best at -17 dB S/N.
Neil, W0YSE/7 / WG2XSV, notes an interesting disparity in transmit and receive reports. It seems several stations had Internet and / or WSPRnet upload issues and this contributed to the mystery. Neil provided the following comments and statistics:
Roger, VK4YB, reports good local propagation with decodes at VK2XGJ of +20 dB S/N. He notes difficulties decoding WH2XCR, however, and the noise floor is only 77 dBm as the result of suspected local noise.
Regional and continental WSPR breakdowns follow:
There were no reports from the trans-Atlantic, trans-African, or trans-Equatorial paths. UA0SNV was present but no reception reports have been filed at this time.
In the Caribbean, Eden, ZF1EJ, reported WG2XXM and WG2XIQ:
Laurence, KL7L / WE2XPQ, reported just about the same stations as the previous session, including WH2XCR and WG2XXM:
Merv, K9FD/KH6 / WH2XCR, is preparing for a possible hurricane strike on his island but managed to keep the station active. It will be interesting to see if there are observable propagation variations if the storm comes on shore later this weekend:
Additions, corrections, clarifications, etc? Send me a message on the Contact page or directly to KB5NJD gmail dot (com)!