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OFF AIR but returning after dark on Saturday night

Better domestic propagation for North America and improving trans-Pacific openings as high noise moves to the East coast; W5EST presents ‘LATE APRIL: 630M PRE-SUNRISE ENHANCEMENTS WITH XXP TRANSMITTER’; MF solutions transmit downconverter drawing and giveaway registration in progress – REGISTER NOW!

– Posted in: 630 Meter Daily Reports, 630 Meters

The details for May 2, 2016 can be viewed here.

IMPORTANT REMINDER: Neither 630-meters nor 2200-meters are open to amateurs in the US yet.  Please continue to be patient and let the FCC finish their processes.

As reported yesterday, John, WA3ETD / WG2XKA, of MF Solutions will soon hold a drawing and giveaway for one of his 630-meter transmit downconverters.  Details and rules for submitting your name for consideration can be viewed here.

The storm system spanning the entire US and parts of southern Canada continues to progress to the East bringing high QRN for a number of stations and keeping many others off air.  The good news is that the system seems to be pushing out to sea.  Domestic propagation was better here overnight  and there were also improvements in long haul trans-Pacific paths which have been less robust in recent sessions.

11-hour North American lightning summary


Geomagnetic conditions continue at very quiet levels.  The Bz is pointing to the North although solar wind velocities are up to moderate levels, averaging near 415 km/s.  DST values have pushed to positive levels for another session.




Ken, K5DNL / WG2XXM, reported that he decoded six WSPR  stations and he was decoded by 46 unique stations including WE2XPQ.

Neil, W0YSE/7 / WG2XSV, reported a handful of JT9 reports for VE7BDQ with a session high at 0802z.  He also indicates that he received WSPR report for nineteen unique station and included a brief list detailing his best DX for the session:


2222 -27 -1.0 1210 @     DE VE7BDQ
0402 -24 -1.0 1210 @     DE VE7BDQ
0422 -22 -1.2 1210 @     DE VE7BDQ
0442 -10 -1.0 1210 @     DE VE7BDQ
0502 -13 -1.0 1210 @     DE VE7BDQ
0522 -20 -1.0 1210 @     DE VE7BDQ
0602 -15 -1.0 1210 @     DE VE7BDQ
0642  -9 -1.3 1210 @     DE VE7BDQ
0702  -8 -1.0 1210 @     DE VE7BDQ
0722  -9 -1.0 1210 @     DE VE7BDQ
0742  -9 -0.9 1210 @     DE VE7BDQ
0802   0 -1.3 1210 @     DE VE7BDQ
0822 -15 -1.0 1210 @     DE VE7BDQ
0902  -4 -1.1 1210 @     DE VE7BDQ

Rick, W7RNB / WI2XJQ, reported that he decoded nine WSPR stations including VK4YB at -27 dB S/N and he was decoded by eighteen unique stations.  Rick’s unique report details can be viewed here.

Dave, N4DB, reported that he decoded eight WSPR stations.

Mike, WA3TTS, reported, “XGP was heard well overnight, almost into audio SNR range. First decodes after 0500 UTC.  Apparently XCR was not on the air overnight, see what happens this evening with the cooler wx  temps….”

Trans-Pacific report details, excluding KL7 and KH6, can be viewed here.

Hideo, JH3XCU, posted links to two tables showing VK -> total JA DX  and VK -> JA peak S/N for the session.

Roger, VK4YB, indicates that he experienced moderate QRN during the late evening with  an enhancement observed with his signal on the approach to sunrise on the West coast of North America.  Propagation was only one-way, however.  Roger also labeled this session a “code-5” in his pursuit to complete a CW QSO with VE7SL.  Roger received reports from 7L1RLL4, JA3TVF, JA8SCD5, JH3XCU, TNUKJPM, VE6XH, VE7BDQ, VE7VV (first time report), W7IUV, WD2XSH/20, WE2XPQ, and WI2XJQ.  He provided reports for WH2XXP and WH2XGP.

Grant, VK3HP, received reports from W7IUV.

Ward, K7PO / WH2XXP, received reports from 51 unique stations including ZL2AFP, VK4YB, and VK2XGJ.  John, VK2XGJ, noted that his first report for Ward was -28 dB S/N at 0842z.

WH2XXP session WSPR activity (courtesy NI7J)


Larry, W7IUV / WH2XGP, provided reports for seven WSPR stations and he was reported by 36 unique stations including VK4YB.  As W7IUV, Larry provided reports for ten WSPR stations including VK4YB and VK3HP.

WH2XGP session WSPR activity (courtesy NI7J)


QRN was significantly lower during this session and storms moved to the East coast allowing the return of many stations in the Midwest and central US that had been QRT during the previous session.  I started WSPR prior to sunset and like the previous session, reports began very short, extending as the evening progressed.  My transmission report details were significantly improved compared to the previous session which can be viewed here.  My reception report details  were also much better and can be viewed here.

WG2XIQ 24-hour WSPR activity


Regional and continental WSPR breakdowns follow:

North American 24-hour WSPR activity


European 24-hour WSPR activity


Japanese 24-hour WSPR activity


Oceania 24-hour WSPR activity


Eden, ZF1EJ, experienced big improvements during this session, at least with moving his signal into the mainland of North America.  He provided reports for four WSPR stations and he was reported by sixteen unique stations.

ZF1EJ 24-hour WSPR activity


Laurence, KL7L / WE2XPQ, indicates that he received pre-dawn signals from VK4YB which Roger indicates were one-way in nature.  Coverage of the western half of North America was also observed as propagation continues to improve.  DX report details can be viewed here.

WE2XPQ 24-hour WSPR activity


Merv, K9FD/KH6 / WH2XCR, reports that the software crashed and he didn’t realize it.  He should be QRV again tonight.


“In yesterday’s May 1 blog, I assayed numerous paths for sunrise enhancements in the last two weeks worldwide and included the December receptions at Norway’s LA2XPA in a TABLE.

Today’s TABLE 2 concentrates on sunrise enhancements in North America and Cayman Islands that all share one common element: Ward WH2XXP’s powerful Part 5  630m experimental station in Arizona as received by stations in North America region and VK/ZL. Your station may be listed, and please excuse if I missed your station in tabulating this sample of receptions.

I critically eyed various daily Timestamp Sorts of the WSPR database as discussed yesterday. Further, I ran a SNR Sort and preferred to recognize prominent instances of SNRs not only when they stood out in the pre-SR sequence but also when those prominent SNRs approached two week highs for their path.

In preparing TABLE 2, I was particularly impressed by the very pronounced enhancements that occurred on eight nearly consecutive days mostly within +/-15 minutes of Caymans sunrise. The ZF1EJ 19°N. latitude site represents the farthest south in N. Hemisphere that I have checked for enhancements.

Turning to TABLE 3, I rearranged the pre-sunrise enhancements on day by day basis. You can see that the events occupy no more than a 2.5 hour time span each day.  Since today’s Tables lack any transatlantic spots, the tabulated events at first work their way deliberately from East to West across the Caymans and North America. Then, as the terminator approaches the XXP transmitter station in Arizona, further enhancements happen in quick succession regardless of receiver location in Washington state, California, Hawaii, New Zealand and Australia.

In the Tables, you’ll see some instances where PRE-SR column indicates enhancement  about an hour in advance before sunup.  I can get used to the idea that Winnipeg’s VE4XC at moderately high latitude 50°N could experience such earliness.

But several enhancements occurred at 30°-40° mid-latitudes, and well prior to a time a simple explanation of grazing penetration of E-region by solar ionizing radiation would predict. Recall comments and Earth diagram at:  http://njdtechnologies.net/041817/

Are these hour-advanced enhancements just a mis-recognized continuation of nighttime SNR dynamics? Perhaps did their SNR sequences occur just by chance– by just randomly having a high-SNR value to stand out among several low values that were low also just by chance?

As we all gain more experience with 630m, perhaps we will learn more definitely how and if some geographic regions and seasons noticeably favor more intense or more frequent sunrise enhancements. When a station in favored circumstances is a path’s eastward station, then a sunrise enhancement there may register on numerous receivers west of the terminator, thanks to transmission by that eastward station.  TU & GL!”


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