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Current Operating Frequency and Mode

Probably QRT tonight and in the morning due to storms in the area

Geomagnetic field is beginning to calm allowing a few bursts of activity during the evening including first time CW and JT9 QSO’s for K3MF; Tougher night out West but some encouraging early morning JT9 activity on trans-Pacific paths; YV7MAE reporting K4SV and ZF1EJ with WSPR; Trans-Atlantic openings mostly limited to the Northeast

– Posted in: 630 Meter Daily Reports, 630 Meters

The details for December 7, 2016 can be viewed here.

The UTC amateur registration database is here.

HERE are a few mode-specific comments addressing where modes are located now and probably where they are best placed in the future

Operator lists detailing stations that are two-way QSO-capable can be viewed here.

Spot stations calling CQ on any mode here on DXSummit and help them find a QSO


North America was slightly noisy from lightning crashes during this session, particularly for the eastern half of the continent.  A few gulf and Central American storms were heard this morning but not major detractors for the session.  Japan was impacted by evening storms with lightning that seemed to cover the entire country.  Australia was in a better situation than in recent sessions where the bulk of the lightning-rich storms that had been plaguing the East have mostly transitioned to the West into less populated areas.  A few strong storms continue in southeastern Australia.

11-hour worldwide lightning summary


Geomagnetic conditions are at elevated-quiet levels.  The Bz is pointing to the South this morning and solar wind velocities are averaging near 520 km/s. DST values have moderated, returning closer to the center line and off of recent lows that resulted from the  G1 storm activity.




Propagation was fascinating to watch during this session and really was pretty good for stations at mid and lower latitudes, particularly in the eastern half of North America.  QSB was active but when signals were strong, they were very strong.

Reverse beacon network reports for the session follow:


Nicolas, F4DTL, reported yesterday that “TM77T special call for the annual mobilization “Telethon” in France” would be active on “JT9 and QRSS3 on MF every night from tomorrow evening until Sunday, JT9 : 475.500 kHz”  Additional information (in French) is available at https://evenement.telethon.fr/2017/

Jim, W5EST, presented the following screen capture of his WSJTx console showing JT9 reception reports at his station in Little Rock, Arkansas.

courtesy W5EST


The following stations provided reports of their two-way QSO’s as well as any additional activity that might have occurred during this session (this is not necessarily a complete list – only what was reported!):

Wayde, K3MF, completed two first-time QSO’s during the session:  CW with NO3M and JT9 with K9KRF.  Wayde indicate that his antenna is a “…40 foot vertical…300 feet flat top with 190 uH coil.

Eric, NO3M, completed a JT9 QSO with WB4JWM and CW QSO’s with K3MF and KB5NJD.

Rik, ON7YD, completed a JT9 QSO with TM77T and reported on the RSGB-LF reflector that “As expected WSJT-X did not digest the special call, so I had to use free messages.  Quite a challenge with the 13 character limit (but that’s where a short callsign becomes handy).

Al, K2BLA, reported that he worked “…K5DOG on JT9 last nite. Tough QSO due to spurious sidebands from WSPR stn. WSPR: hrd 20 incl EA5DOM and hrd by 53 no west coast hrd or hrd by…”

Joe, K9MRI, had a big night, completing CW QSO’s with K1RGO and K4EJQ.  He completed a JT9 QSO with W8ARE.

Terry, W8ARE, completed JT9 QSO’s with K9MRI, KC3OL and W3LPL.

Steve, K5DOG, completed JT9 QSO’s with K2BLA and KC3OL.

Tom, N9RU, completed a JT9 QSO with WB0DBQ (second-hand report).

Ted, KC3OL, completed JT9 QSO’s with K5DOG and possibly KB0PPQ although the latter was not confirmed and from second-hand reports.

Robert, WA1OJN, possibly completed a JT9 QSO with W3XY although no confirmation that a QSO was completed has been received.  A QSO attempt was confirmed, however.

Neil, W0YSE, reported that he decoded JT9 from VK4YB this morning at -27 dB S/N on an otherwise bland night in the Northwest.  Roger reported that he saw a trace of a signal where Neil was calling around 1311z so its possible that Neil’s signal was making the very long haul to Australia.  Neil added that he “…did get two decodes of him on WSPR about 1/2 hour earlier at -31 and -29, but his JT9 at -27 still surprised me.  On WSPR I was heard by 39 from Hawaii to western PA, and Texas to Alberta, but no east coast stations.

Robert, KR7O, reported that “…VK4YB is in (1300-1320z) on JT9 at -26.  That is a surprise because I only had one WSPR decode from him overnight.

Ken, K5DNL, operated WSPR overnight, decoding sixteen stations and receiving reports from 95 unique stations including KL7L and ten Canadians.  He shared two-way WSPR reports with K9FD (/KH6) and ZF1EJ.

Geoff, G0LUJ, reported receiving WSPR signals from K4SV and W1TAG.  He also reported VO1NA’s 12 wpm CW on  477.7 kHz.

The night started slow but ended on a high note at KB5NJD.  I made it into the ham shack by 0100z and made a few calls on CW.  I received reverse beacon network reports from WZ7I quickly and at very good levels (5 dB S/N) which is typical of a good night.  Further calls went unanswered, however, so I transitioned to JT9 for a bit, working WB4JWM in Georgia.  Signals were solid and the QSO was quick.  While working Tom I noticed a CW signals slightly above 475 kHz.  RBN reports indicated that it was K9MRI so after a few more calls on JT9, I transitioned back to CW to look for Joe.  While I never found him while on a peak, I heard K4EJQ at RST 579 levels.  Bunky and I chatted for a few minutes and he was hearing me well as noise was low.  After this QSO I transitioned up to 474.5 kHz CW to make a few calls and to continue looking for Joe.  Joe indicated that he responded to my calls but I never heard him again.  Tuning across the band again I heard NO3M very loud on 474.1 kHz.  I actually thought Eric was on 474.2 kHz but as I tightened up my filters after we initiated a QSO I realized I was off frequency.  During the course of the QSO, QSB was active and Eric’s signal was dropping on the K9AY loop.  Fortunately I had the resonant loop on the receive antenna switch in the position that normally has an omni directional active element.  When I switched to the resonant loop, Eric’s signal popped up again while completely inaudible now on the K9AY loop.  Eric’s signal continued to build from his original RST 579 to RST 599 + 10 dB by the time we were signing.  We QRT’ed on a high note because experience says that the band wasn’t going to remain strong for long.  It was good to rag chew at strong signal levels for a bit.  I QRT’ed for the night shortly after, returning to air this morning making a number of random calls beginning at 1100z.  There were a number of reverse beacon network reports on both coasts but not many were awake.  It was a good session having completed those QSO’s in addition to seeing  the late evening activity explosion.

Trans-Atlantic WSPR summary follows:


PA3ABK/2 -> AA1A







Trans-Pacific WSPR summary follows:

7L1RLL -> K9FD



Hideo, JH3XCU, submitted this link detailing DX -> JA WSPR decode totals and DX -> JA WSPR S/N peaks for the session, as reported on the Japanese language 472 kHz website.

The WSPRnet activity page reported 168 MF WSPR stations at 0200z.  Regional and continental WSPR breakdowns follow:

North American 24-hour WSPR summary


South American 24-hour WSPR summary


European 24-hour WSPR summary


Asiatic Russian 24-hour WSPR summary


Japanese 24-hour WSPR summary


Oceania 24-hour WSPR summary


Eden, ZF1EJ, provided reports for ten WSPR stations and he received reports from 68 unique stations including K9FD.

ZF1EJ session WSPR summary


Martin, YV7MAE, reported WSPR signals of K4SV and ZF1EJ:

YV7MAE session WSPR summary


Laurence, KL7L, continues to report WSPR and CW from K9FD as KL7L/KH6 while on assignment in Hawaii.  Laurence indicated that using a wood pole to extend the PL600 receiver away from the Faraday cage of the building appears to have helped.  He indicated that he could see a few smudges in the waterfall of other signals but no additional decodes were reported.  Back in Alaska overnight, Laurence reported three WSPR stations while limited operating in a receive-only capacity on 630-meters.

KL7L session WSPR activity


Laurence submitted this path profile showing the roughly 60 miles between his location and K9FD:

courtesy KL7L


Merv, K9FD (/KH6), reported nine WSPR stations including ZF1EJ and he shared two-way WSPR reports with VK4YB, 7L1RLL, K5DNL, KR6LA, W0YSE and W7IUV. Merv received reports from 43 unique stations including VK2XGJ, 7L1RLL4, JA1NQI/2, JA1PKG, JA3TVF, JE1JDL and JH3XCU.

K9FD session WSPR summary


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