A strong geomagnetic storm caused by a large, geoeffective coronal hole continues to help propagation as numerous trans-Pacific and trans-Atlantic reports are registered during this session. WSPR spot counts were high as was participation (nearly 1000 combinations of decodes in 24-hours!) but noise was elevated in an number of regions around North America which no doubt limited the full potential of this session, at least domestically.
The geomagnetic field was extremely active, with many reporting periods at storm levels. The Bz is pointing to the South and solar wind velocities are very high, peaking at 700 km/s. This event is significant and I am just glad to see that it is helping and not hurting propagation. When will the bottom drop out? Clearly there is a lot going on here that we do not understand:
Clemens, DL4RAJ, reported WG2XKA during this session and posted the following statistics and comments on the RSGB LF reflector:
John, WA3ETD / WG2XKA, had a strong session with reports from DL4RAJ as well as a good first night of evaluating his changes to the height of the low noise vertical receive antenna. John provided the following comments:
“A reasonable session here with returning higher noise levels. The east was well represented and was spotted by ZF1EJ for the first time in several days. The PNWwas absent but there was a T/A spot from DL4RAJ. XKA spotted seven uniques and was heard by 18.”
Andy, F6CNI, decoded DK7FC/p operating portably during the session and posted this welcome and statistics on the RSGB LF reflector:
The trans-Pacific path was “on fire” during this session as numerous stations on the North American mainland either decoded stations in VK or were decoded by stations in VK:
David, VK2DDI, provided the following console screen capture showing early reports from North America:
Edgar, EJTSWL, in Tasmania also had early reports from North America:
Larry, W7IUV / WH2XGP, reports that he decoded ten WSPR stations, using the west-facing flag, including VK4YB, and he was decoded by 33 unique stations, including VK4YB, VK2DDI, VK2XGJ and EJTSWL plus East coast stations, where band conditions were “decent”. Larry reports that his last decode from VK4YB came after sunrise at 1326z and his last decode by WH2XCR came 20 minutes after local sunrise at 1340z.
Ken, K5DNL / WG2XXM, reports that he decoded eight WSPR stations and was decoded by 44 unique stations including the previously detailed VK4YB.
Ron, NI7J / WH2XND, provided the following map detailing the WSPR session of Ward, K7PO / WH2XXP. Ward indicates that he was decoded by 45 unique stations including the four previously detailed VK stations:
Rick, W7RNB / WI2XJQ, was “receive-only” during this session due to the threat of more strong thunderstorms. He indicates that one storm in the afternoon may have taken out his Flex 6300 receiver. Rick submitted the following “short list” of unique stations reported during the session:
Neil, W0YSE/7 / WG2XSV, submitted the following details statistics for his session in the greater Vancouver / Portland area:
Roger, VK4YB, declares that this was his “best session ever” and posted impressive statistics in the ON4KST chat/logger:
“Spots 1*XXM (-27) 9*XGP (-24) 25*XXP (-17) 6*XBQ (-24) 27*XCR (-20) decoded by XGP VA7MM VE7CNF VE7BDQ,VE7SL XCR KL7L”
Roger adds that all four Canadian stations spotted him on a single transmit cycle.
In response to a question from Steve, VE7SL, regarding the noise level in Queensland with respect to WSPR reports, Roger had this to say:
“Steve, I had a visual on you at 12:54. About 2dB below decode. Noise improved as night went on. Probably only about a 2dB degradation.”
Steve, VE7SL, may attempt QRSS3 soon as this report was 30 minutes prior to his sunrise so plenty of time remained for an attempt this morning. Roger does indicate, however, that watching following cycles did not yield any improvement on Steve’s WSPR signal.
Steve adds that he decoded ten WSPR stations including two previously reported decodes of VK4YB, and he was decoded by 18 unique stations. He indicates that this may have been a brief “spotlight” propagation event which is something that has rarely been seen on this scale in large concentrations of active receiving stations. Today’s active may break new ground.
Jim, W5EST, reported on the behalf of Don, W5OR / WD2XSH/15:
“WD2XSH/15 SNRs in order of increasing distance: XIQ -7, WE4X -23, K3SIW/2 -25, SWL/K9 -24, XZO -25, WD0AKX -25, XHK -23, XFI -23, W8MQW -21, WA3TTS -23, WG2XJM -15, XAR -31.”
David, G0MRF, has returned to air during this session testing, his new amplifier prototype on a real antenna, consisting of “a sloping wire that runs from the club building up to the top of an adjacent church. Total length is around 200 feet with the far end about 80 feet AGL.” David provided the following details of the session including some proof-positive data illustrating a very high degree of spectral purity with his amplifier. Its great to see such innovation and attention to detail:
“I managed to give my new amplifier board a ‘soak test’ into a real antenna rather than a dummy load earlier this evening. Managed a couple of hours at my local radio club running 200W TPO on a 50% duty cycle while checking everything was running cool.
Nice to see many people returning to 630m now the new season has begun. I received reports from 42 unique stations from around Europe with the best being SV8RV reporting -23 over 2252km. That was pretty much everyone….If only we had a station or two in the middle East or Africa.
After our debate last week about the harmonic content of the class D amplifier, I made some detailed measurements. The 2nd showed 58.7dB down on the wanted signal while the 3rd was -66dB. That’s probably OK for 95% of installations, but a notch at 950 would give some reassurance if you had a local AM broadcaster on that frequency and you wanted to ‘protect’ the immediate neighbours.”
I did not operate JT9 or CW this morning or last night as I was too tired and had problems getting awake this morning. I do expect a daytime local CW QSO today and probably JT9 and / or CW tonight and in the morning, however.
WE6YMT was reported as a new station during this session. Rudy, N6LF / WD2XSH/20, was also active during this session for the first time since last Winter. Welcome aboard!
Regional and continental WSPR breakdowns follow:
There were no reports from the trans-African or trans-Equatorial paths. UA0SNV and ZS1JEN were present but no reports were filed during this session. I suspect it is only a matter of time for both of these stations to begin registering regular reports.
The Caribbean is still very noisy but Eden, ZF1EJ, did a nice job decoding stations on both antenna / receiver combinations:
Laurence, KL7L / WE2XPQ, continues to do well in spite of auroral activity, decoding VK4YB and WH2XCR on the Pacific path, and WH2XXP in Arizona along with several stations in the Pacific Northwest:
Merv, K9FD/KH6 / WH2XCR, did well this morning into Texas, Oklahoma and VE4. The West coast of North America was well represented with reports of Merv’s signal in addition to Alaska and the usual stations in VK that seems to consistently hear very well. Merv continues to report VK4YB in spite of the receive antenna laying on the ground. I am sure it must be noisy there due to the hurricane.
Additions, corrections, clarifications, etc? Send me a message on the Contact page or directly to KB5NJD gmail dot (com).