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Current Operating Frequency and Mode

OFF AIR; QRT Thursday night but back Friday morning by 1100z

Strong geomagnetic storm continues but propagation is good through this session; Elevated storm QRN across North America; Numerous trans-Pacific and trans-Atlantic reports; VK4YB reports ‘best session ever’ ; Great harmonic suppression for the G0MRF amplifier

– Posted in: 630 Meter Daily Reports, 630 Meters

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.

Lightning 090316

12-hour North American lightning summary


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:

planetary-k-index 090316


Kyoto DST 090316


Australia 090316


Clemens, DL4RAJ, reported WG2XKA during this session and posted the following statistics and comments on the RSGB LF reflector:

DL4RAJ 090316


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.”

WG2XKA 090316

WG2XKA session WSPR activity


Andy, F6CNI, decoded DK7FC/p operating portably during the session and posted this welcome and statistics on the RSGB LF reflector:

DK7FC F5CNI 090316

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:

VK4YB VA7MM 090316

VK4YB, as reported by VA7MM


VK4YB VE7BDQ 090316

VK4YB, as reported by VE7BDQ


VK4YB VE7CNF 090316

VK4YB, as reported by VE7CNF


VK4YB VE7SL 090316

VK4YB, as reported by VE7SL


WG2XXM VK4YB 090316

WG2XXM, as reported by VK4YB


VK4YB WH2XGP 090316

VK4YB, as reported by WH2XGP


WH2XGP VK2DDI 090316

WH2XGP, as reported by VK2DDI


WH2XGP VK2XGJ 090316

WH2XGP, as reported by VK2XGJ


WH2XGP vk4yb 090316a

WH2XGP, as reported by VK4YB



WH2XGP, as reported by EJTSWL



WH2XXP, as reported by EJTSWL


WH2XXP VK2DDI 090316

WH2XXP, as reported by VK2DDI


WH2XXP VK2XGJ 090316

WH2XXP, as reported by VK2XGJ


WH2XXP VK4YB 090316

WH2XXP, as reported by VK4YB



WI2XBQ, as reported by EJTSWL


WI2XBQ VK2DDI 090316

WI2XBQ, as reported by VK2DDI


WI2XBQ VK2XGJ 090316

WI2XBQ, as reported by VK2XGJ


WI2XBQ VK4YB 090316

WI2XBQ, as reported by VK4YB


David, VK2DDI, provided the following console screen capture showing early reports from North America:

VK2DDI 090316

Early WSPR reports at VK2DDI


Edgar, EJTSWL, in Tasmania also had early reports from North America:

EJTSWL 090316

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:

WH2XXP 090316

WH2XXP session WSPR activity (courtesy NI7J)


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:

WI2XJQ 090316

WI2XJQ WSPR session activity


Neil, W0YSE/7 / WG2XSV, submitted the following details statistics for his session in the greater Vancouver / Portland area:

WG2XSV 090316

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.”

G0MRF 090316a

2nd harmonic is down nearly 60-db!


G0MRF 090316b

David’s operational amplifier operating at the club station


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:

NA 090316

North American 24-hour WSPR activity


EU 090316

European 24-hour WSPR activity


VK 090316

Oceanic 24-hour WSPR activity


JA 090316

Japanese 24-hour WSPR activity


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:

ZF1EJ 090316

ZF1EJ 24-hour WSPR activity


ZF1EJ1 090316

ZF1EJ/1 24-hour WSPR activity


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:

KL7L 090316

KL7L 24-hour WSPR activity


VK4YB KL7L 090316

VK4YB, as reported by KL7L


WH2XCR KL7L 090316

WH2XCR, as reported by KL7L


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.

WH2XCR 090316

WH2XCR, 24-hour WSPR activity


WH2XCR VK3ELV 090316

WH2XCR, as reported by VK3ELV


WH2XCr VK2XGJ 090316

WH2XCR, as reported by VK2XGJ



WH2XCR, as reported by EJTSWL


WH2XCR VK2DDI 090316

WH2XCR, as reported by VK2DDI


WH2XCR VK4YB 090316

WH2XCR, as reported by VK4YB


VK4YB WH2XCR 090316

VK4YB, as reported by WH2XCR



Additions, corrections, clarifications, etc? Send me a message on the Contact page or directly to KB5NJD gmail dot (com).