NJDTechnologies

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

Typical Operating Schedule

Usually QRV CW most evenings, tuning between 472.5 kHz and 475 kHz with CQ's on or near 474.5 kHz. Occasionally QRV JT9, 474.2 kHz dial + 1000 - 1350 Hz. QRV some mornings starting around 1100z on CW. Sked requests are welcome. All activity is noise and WX permitting

Lower activity and higher noise in the East but a few QSO’s are reported; Western North America fares much better during the later evening; Good trans-Atlantic openings including central US -> EU; W5EST presents: ”Part 2: At Your 630m Station, When Does Sun First Increase D-Region RF Absorption?”

– Posted in: 630 Meter Daily Reports, 630 Meters

The details for January 10, 2017 can be viewed here.

The UTC amateur registration database is here.

Working grids for the first time in 2018? Be sure to upload your logs to LoTW so the 630m operators participating in the 2018 Grid Chase Event can receive credit. Details on LoTW can be viewed here.

The current band plan used on 630 meters can be viewed HERE

WAS operator list 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 Q

Storms were present in the Desert Southwest of North America in addition to the Caribbean and the areas surrounding Florida.  The mid Atlantic region, near Bermuda, also was host to evening and overnight storms, all of which likely contributed to elevated noise levels on the continent and surrounding areas.  Southwestern Europe is once again receiving strong storms and the previous system is now located in the central Mediterranean, leaving much of northern Europe storm free.  The Pacific Rim continues to experience strong storms, impacting much of Japan and Australia.  New Zealand is storm free but likely experiencing strong noise.

11-hour worldwide lightning summary

 

Geomagnetic conditions were quiet and recovering from recent unsettled levels. The Bz was close to neutral this morning and solar wind velocities are averaging near 445 km/s.  DST values remain relatively stable, riding the centerline.

 

 

 

Domestic propagation was average.  Reported activity was down a bit but a number of moderate distance QSO’s were completed.  Noise was reported to be elevated in the East and lightning static was also reported in the Southwest and West Coast.  Trans-Atlantic openings were strong including openings into the central US.  Trans-Pacific openings were lackluster and probably below average for this time of year.

Reverse beacon network reports follow:

 

Jim, W5EST, submitted the following screen capture of his WSJTx console showing JT9 activity observed at his station in Little Rock, Arkansas:

courtesy W5EST

 

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

Dave, AA1A, reported a CW QSO with K3MF early in the session.

John, WA3ETD, reported JT9 QSO’s with W9XA, K9KFR and W3XY.  John also indicated that he heard AE5X but was unable to get his attention.

Neil, W0YSE, reported that he “…had a JT9 Q with Joe/NU6O last evening. This morning I am seeing evidence of several stations on JT9, some in QSO’s, most of which happened after I went to bed (9pm lately). Those decoded were W7IUV, KR7O, K0KE, KL7L, N6PIG, KA7OEI, and VE7VV. ”  Neil added the following statistics:

“…and I decoded these wspr-ers this session: AE5X, K5DNL, K9FD, KA7OEI, KL7L, KR6LA, NU6O, VA7MM “

Robert, KR7O, reported “Heavy lightning static from passing storm.  Conditions seemed about the same as the previous session.  Heard and called W9XA on JT9 with no luck.  Also copied K9KFR. KL7L and a few of the western regulars.  Thanks to Microsoft Updates, no JT9 receptions from 11-13Z.  On WSPR, copied W3LPL (-30), W1IR (5/-21), WA3ETD (2/-26), AA1A (3/-24). 

ZF1EJ 4 spots, -27

KL7L 9 spots, -20

K9FD 105 spots, -2

Ken, K5DNL, indicated that he operated WSPR-only through this session, reporting nineteen stations and receiving reports from 87 unique stations including KL7L, F59706, PA0RDT, G0LUJ, F1AFJ, G0VQH, ZF1EJ and nine Canadian stations.  Ken indicated that he was operating with 48-watts TPO.  Ken added that he has a 100-watt, class-D amplifier for sale that is designed for use with non-linear modes (like digital modes).  An image can be viewed here.  Ken has additional details and contact information on his website, K5DNL.com.

John, WA3ETD, reported a good night of WSPR while using just 40-watts TPO:

06:22  WA3ETD  0.475722  -27  0  FN33lq  2  K9FD  BL11je  7945  282   
03:56  WA3ETD  0.475721  -28  0  FN33lq  2  LA2XPA  JP33wi  5342  37   
03:56  WA3ETD  0.475748  -26  0  FN33lq  2  G0VQH  JO02fe  5316  53   
03:56  WA3ETD  0.475721  -29  0  FN33lq  2  G0LUJ  IO83qv  5060  51

 

Trans-Atlantic WSPR summary follows:

ZF1EJ -> LA2XPA

WA3ETD -> G0LUJ, G0VQH, LA2XPA

W1XP -> LA2XPA, G0LUJ/5, G0VQH,PA0RDT

W3LPL -> G0LUJ, G0LUJ/5, LA2XPA, LA3EQ

K5DNL -> F1AFJ, F59706, G0LUJ, G0VQH, PA0RDT

AA1A -> DH5RAE, DL4RAJ/2, F1AFJ, F59706, F6GEX, G0LUJ, G0LUJ/5, G0VQH, G4KPX, G4ZFQ, LA2XPA, LA3EQ, LA3JJ, M0NKA, M0TAZ, M0XDK, OR7T, PA0EHG, PA0O, PA0RDT, PA7EY, PI9ESA

W1IR – > DH5RAE, DK7FC/P, DL0HT, DL4RAJ, DL4RAJ/2, DL5XL, EA2HB, F1AFJ, F59706, F6GEX, G0LUJ, G0LUJ/5, G0VQH, G3WCB, G4KPX, G4ZFQ, LA2XPA, LA3EQ, M0NKA, M0TAZ, M0XDK, OR7T, PA0EHG, PA0O, PA0RDT, PA7EY, PI4THT, PI9ESA

Trans-Pacific WSPR summary follows:

ZF1EJ -> K9FD

K9FD -> JA1PKG, JA3TVF, KL7L

VK4YB -> JA1PKG, JA3TVF, JE1JDL, K9FD, KJ6MKI, KK6EEW, KL7L, KR6LA, NU6O, TNUKJPM, VA7MM, VE6JY,W6SFH

 

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.

 

Regional and continental WSPR breakdowns follow:

North American 24-hour WSPR summary

 

European 24-hour WSPR summary

 

African 24-hour WSPR summary

 

Japanese 24-hour WSPR summary

 

Oceania 24-hour WSPR summary

 

Pacific 24-hour WSPR summary

 

Eden, ZF1EJ, reported ten WSPR stations and he received reports from 59 unique stations including LA2XPA and K9FD.

ZF1EJ session WSPR summary

 

Laurence, KL7L, completed an early JT9 QSO with NU6O.  He also reported eight WSPR stations including VK4YB and he received reports from fourteen unique stations. He shared two-way reports with K9FD, KA7OEI, KR6LA, NU6O and W0YSE.

KL7L session WSPR summary

 

Merv, K9FD (/KH6), reported fifteen WSPR stations including VK4YB and ZF1EJ. He shared two-way reports with AE5X, K5DNL, KA7OEI, KR6LA, NU6O, VA7MM, VK4YB, W0YSE, and W7IUV. Merv received reports from 36 unique stations including JA1PKG and JA3TVF.

K9FD session WSPR summary

 

Jim, W5EST, presents, “PART 2: AT YOUR 630M STATION, WHEN DOES SUN FIRST INCREASE D-REGION RF ABSORPTION?”:

“Recently, the 1/03/18 and 1/05/18 blogs suggested calculations for D-region sunrise time advancement when SNRs might start declining. http://njdtechnologies.net/010518/  The calculations were based on assumptions of ozone layer shadowing of the D-region or, alternatively, Earth at ground level shadowing the D-region.

Today’s first illustration shows 630m SNRs and a dashed blue envelope line to indicate WSPR SNR points where probable phasing QSB diminished SNR the least.  You can see that SNR begins its pre-SR downramp in the three illustrated paths starting dramatically early.

The start of downward SNR ramping seems too dramatically advanced in pre-SR time to find explanation even in the ways I blogged earlier.  I’m casting around for further ideas on this.   Robert Brown NM7M, in The Big Gun’s Guide to Low Band Propagation, mentions solar UV scattered into the dark hemisphere, see p.33 of: https://www.okdxf.eu/files/NM7M_The_Big_Gun_s_Guide_to_Low-Band_Propagation.pdf

Today’s second illustration depicts a concept where solar ionizing radiation scatters from the terminator deep into the pre-sunrise (pre-SR) D-region. It may not be what NM7M exactly is talking about, but here goes.  The dashed red lines suggest energetic, short-wavelength solar UV or X-rays from the sun penetrating to the D-region at least as far as the terminator.  There, they hypothetically produce ions that recombine and re-emit not much, but some, ionizing radiation in all directions—including directions that stay above the ozone layer and still go deep into the pre-SR D-region (dashed red lines, far left).  The geophysicists and ionospheric chemists are the experts on such things—I’m not.  But I seek some mechanism that noticeably would increase 630m RF absorption  before sunrise by some considerable time advancement.

Geometrically, the resulting ionospheric night “shadow” (that such scattered ionizing radiation still  mostly leave untouched) would have a radius slightly less than the radius of the Earth by about 60km.  That’s enough to increase spreadsheeted SNR downramp time advancements nearer to the observations.   More in another blog post!

TU & GL on 630m!”


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