Radio: it's not just a hobby, it's a way of life

Current Operating Frequency and Mode

OFF AIR but will be QRV on CW somewhere between 472.5 kHz and 475 kHz after dark

SCHEDULED ACTIVITY: CQ 474.5 kHz CW by 1030z through sunrise most days, WX permitting

Strong session with trans-Atlantic and two-way propagation between VK and KH6, Selective and variable domestic conditions

– Posted in: 630 Meter Daily Reports, 630 Meters

Last night was interesting.  Much like a session from a few nights ago, conditions were strong but very selective, as if the “spotlight” had been narrowed and moving around quickly.  This meant that while one station might report +6 db S/N for my signal, a group of others might be near the detection limit, on paths that are normally solid in full darkness this time of year.  Doug, K4LY / WH2XZO, reported similar results in the evening, seeing a 10-db deficit on some reports and it made him think there was an antenna problem in spite of normal SWR and power levels.  Inspection this morning confirmed that there were no problems other than fickle propagation.

The band was very quiet.  Near sunset I called CQ on 474.5 kHz CW and noted a smooth noise level of S0 on the receiver.  That noise level was observed while listening with the transmit vertical.  That level of performance tends to be the rule rather than the exception during December, at least from this location.

The geomagnetic field was quiet and stable.  The Bz component was southerly through the North American evening but stabilized near sunrise.

planetary-k-index 120415

The Kyoto DST was very stable through this session.

Kyoto DST 120415

Kyoto DST for December 2015

Participation was extremely high, much higher than the previous few sessions, with active MF stations numbering in the 80’s through the late evening.  There were also reports from stations that are recently new to reporting on 630-meter WSPR.  These include N9MT, W9MDO, VE3AE, and VE7KPB.

The Worldwide WSPR activity breakdown follows:

NA 120415

North American 24-hour WSPR activity


EU 120415

European 24-hour WSPR activity


VK 120415

Australian 24-hour WSPR activity


JA 120415

Japanese 24-hour WSPR activity


Trans-Atlantic reports were once again plentiful for stations in the north east although no North American stations were reported in Europe.

G8HUH WD2XH17 120415

G8HUH, as reported by WD2XSH/17


DK7FC WD2XSH17 120415

DK7FC, as reported by WD2XSH/17


F5WK WD2XSH17 120415

F5WK, as reported by WD2XSH/17


F5WK VE1YY 120415

F5WK, as reported by VE1YY


G8HUH VE1YY 120415

G8HUH, as reported by VE1YY


F5WK VE2PEP 120415

F5WK, as reported by VE2PEP


F5WK WA3TTS2 120415

F5WK, as reported by WA3TTS/2


G8HUH WA3TTS2 120415

G8HUH, as reported by WA3TTS/2


Mike, WA3TTS, had a very nice session and included the follow note and screen shots:

WA3TTS email 120415

WA3TTS 120415

WA3TTS 24-Hour WSPR activity


Mike also made a You tube video documenting the band conditions:



In the Caribbean, Eden, ZF1EJ, and Roger, ZF1RC, were both active.  Roger’s best distance through the session was Larry, W7IUV / WH2XGP, and Eden made it out to Merv, K9FD/KH6 / WH2XCR.

ZF1RC 120415

ZF1RC 24-hour WSPR activity


ZF1EJ 120415

ZF1EJ 24-hour WSPR activity


In Alaska, Laurence, KL7L / WE2XPQ, had a strong session.  Note that K2UFT is a real station in Georgia, but it seems this spot was a phantom that also happened to be dumb luck that it was a real call sign.

WE2XPQ 120415

WE2XPQ 24-hour WSPR activity


In Hawaii, Merv, K9FD/KH6 / WH2XCR, had a very good session also, with the return of the path to VK in both directions.  Merv also had reports from JA and stations on the east coast of the mainland US.

WH2XCR 120415

WH2XCR 24-hour WSPR activity


WH2XCR JH3XCU1 120415

WH2XCR, as reported by JH3XCU/1


VK3ELV WH2XCR 120415

VK3ELV, as reported by WH2XCR


WH2XCR VK2XGJ 120415

WH2XCR, as reported by VK2XGJ

John, VK2XGJ, sent a screen shot of his console, including the waterfall where Merv’s signal can be seen near the bottom during the 0916z frame:

WH2XCR screenshot VK2XGJ 120415

VK2XGJ WSPR console. Note the faint trace in the lower right quadrant of the screen shot. That’s WH2XCR.

This morning’s CW session yielded a report from Bill, N3CXV / WH2XRR, who indicated that my signal was RST 559 at 1122z.  My daily CW sked began at 1136z and at 1200z I returned to WSPR2.

Additions, corrections, clarifications, etc?  Send me a message on the Contact page!