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Current Operating Frequency and Mode

CQ 474.5 kHz CW and alternately tuning 472 kHz - 475 kHz for signals.

Surprisingly strong propagation as geomagnetic storm rages on, WH2XCR reported by a record four JA’s, Several JT9 QSO’s including first QSO for WI2XBV

– Posted in: 630 Meter Daily Reports, 630 Meters

If you didn’t pay too much attention to the signal levels of stations at higher latitudes, assuming you could hear them at all, you might not know that a really strong geomagnetic storm was in progress.  The Kp-index remained at 6 or higher through the session but band conditions seemed quite strong for stations at lower latitudes.  Examination of the WSPR log for last night shows that Eric, NO3M / WG2XJM, in western Pennsylvania reported my station at +6 db S/N or higher consistently though the overnight period.  Similar reports were seen from Doug, K4LY / WH2XZO, who also pointed out that northerly stations experienced impacts to their S/N in addition to reductions in continental distances through the session.  CW levels were observed to and from Merv, K9FD/KH6 / WH2XCR, during the session.  Its too bad that we didn’t know before either of our bed times.  I think a CW QSO isn’t too far off for us.

planetary-k-index 122115

As expected, the Kyoto DST took a major dip through the session.  As postulated yesterday, these unstable conditions, at least early in this event, may be fuelling some of the instability that is allowing Merv, K9FD/KH6 / WH2XCR, to have record reports from JA stations.  It seems completely counter-intuitive.

Kyoto DST 122115

Kyoto DST for December 2015


The Australian DST saw similar extreme drops through the session.  No reports to or from VK have been observed at the time of this report.

Australia DST 122115


Evening session activity included JT9 QSO’s between the follow stations:





This session marked Al’s, K2BLA / WI2XBV, first QSO after a lot of hard work at his station to not only get the software working properly but also the switching system working well.  John, WA3ETD / WG2XKA, reported that Al’s signal was strong but there were some complications during the session that prevented a QSO from being completed.

WSPR activity was high once again, with the recent server improvements by Bruce, W1BW.  During the evening 86 MF WSPR stations were observed on the WSPRnet activity page.  Several new (newer) 630-meter reporting stations were observed during the session, including WB9TAE, WF7T, N6SPP, AC7IJ, N9LYE, KR5J and KC2RXS.  Welcome aboard!

Regional and continental WSPR breakdowns follow:

NA 122115

North American 24-hour WSPR activity


EU 122115

European 24-hour WSPR activity


VK 122115

Australian 24-hour WSPR activity


JA 122115

Japanese 24-hour WSPR activity


There were no trans-Atlantic or trans-African reports during this session.

EA8BVP reported G8HUH and EA5DOM during this session:

EA8BVP 122115

EA8BVP 24-hour WSPR activity


G8HUH EA8BVP 122115

G8HUH, as reported by EA8BVP


EA5DOM EA8BVP 122115

EA5DOM, as reported by EA8BVP


Eden, ZF1EJ, had a typical night with some reduction in signal levels for stations across North America:

ZF1EJ 122115

ZF1EJ 24-hour WSPR activity


In Alaska the signal of Laurence, KL7L / WE2XPQ, was attenuated during the session due to massive auroral activity and high K-indices.  He was able to hear Merv, K9FD/KH6 / WH2XCR, through the session although S/N reports were significantly degraded compared to typical sessions.

WH2XCR WE2XPQ 122115

WH2XCR, as reported by WE2XPQ


In the Pacific, Merv, K9FD/KH6 / WH2XCR, was reported by four JA stations during this session which is a new record.  Did the falling Kyoto DST actually help this path or was it just dumb luck?  On the mainland US, Merv’s best distance was reported at WG2XJM and WH2XRR.

WH2XCR 122115

WH2XCR 24-hour WSPR activity



WH2XCR, as reported by TNUKJPM


WH2XCR JE1JDL 122115

WH2XCR, as reported by JE1JDL


WH2XCR JH3XCU 122115

WH2XCR, as reported by JH3XCU


WH2XCR JA1NQI1 122115

WH2XCR, as reported by JA1NQI-1


Other anecdotes, statistics and comments from the session:

Bruce, W1BW, made adjustments to the WSPRnet system during the late evening.  The system was down for about an hour after 0300z.  It appears to be working well this morning.

Larry, W7IUV / WH2XGP, is QRT due to antenna icing.

Ron, NI7J/ WH2XND, indicates “weird” conditions overnight but reports from 36 unique stations.

This morning’s CW session was typical.  Band noise was low but storms in the central US added an occasional static crash.  The morning CW sked occurred on time with normal signal levels.  At 1200z I returned to WSPR for the daytime session.

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