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Current Operating Frequency and Mode

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

Another ”roller coaster” night for trans-Pacific paths as openings extend into the East; North American JT9 reports of VK4YB heat up and DX QSO plans for first night are underway; EA5DOM -> WD2XSH/17 for first trans-Atlantic opening in a few days; W5EST presents: ”Distance Breakthroughs: N. America – VK”

– Posted in: 630 Meter Daily Reports, 630 Meters

The details for September 19, 2016 can be viewed here.

The UTC amateur registration database is hereEven if you don’t think you will use these bands, REGISTER!  Doing so prevents UTC from future PLC coordination in these bands near your QTH.  While amateur interference to PLC systems is a myth and PLC systems are migrating away from RF, there is no reason to give them a reason to do something weird in the future.

Click here to view the proposed “considerate operators” frequency usage guide for 630-meters under Part-97 rules that was developed with the input of active band users.

Mexico through the central US into the Midwest was awash with noise during this session.  It was really tough listening during this session for some of us.  The Pacific Northwest into Idaho also experienced a number of storms, some of which continue this morning.  The Caribbean also experienced quite a few storms during the evening and rain static may have impacted many through this session.

11-hour North American lightning summary


Geomagnetic conditions were at quiet to elevated-quiet levels through this session.  The Bz is generally at unity with a few excursions to the South this morning.  Solar wind velocities have decreased quite a bit, now averaging just under 500 km/s in the moderate category.  DST values returned to the centerline and in some cases pushed into positive territory.




Trans-Atlantic report details can be viewed here.

Dave, AA1A / WD2XSH/17, provided reports for seven WSPR stations including  EA5DOM.

Session trans-Atlantic WSPR activity


Luis, EA5DOM, posted the following comments and statistics on the RSGB-LF reflectors about his session success:

Roelof, PA0RDT, posted these comments on the RSGB-LF reflector regarding his observations of trans-Atlantic reports and the impact of latitude.  He makes a very good point about the lack of path reciprocity that is often observed:

“Propagation from west to east and east to west is not always reciprocal. Another important factor is latitude.

I believe that depending on the season at your location T/A propagation is much better than up north. Unfortunately there are not many people chasing NDB’s from Spain or Portugal.

I have had the pleasure to listen to a wide band IQ recording from the Canary Islands and T/A reception was excellent.”


Neil, W0YSE/7 / WG2XSV, reported that he was decoded by 22  unique stations including WH2XCR and WE2XPQ after returning his amplifier to service with enough power to result in 1W ERP.  He provided reports for six WSPR stations including CF7MM, VE7BDQ, WH2XCR, WH2XGP, WH2XXP and WI2XBQ.  Neil adds that he may be running two radios ” on JT9 (RX-only) tonight to see if I can pull out Rogers signal.” and he looks forward to opening night after Roger’s success at W7IUV’s receiver overnight.

Doug, K4LY / WH2XZO, reported that the Southeast was “Pretty noisy again as summer-like weather has returned. Only 6 decoded and 29 decoding XZO last night.”

Dave, N4DB, reported that he decoded seven WSPR stations through quiet overnight band conditions in Virginia.

Trans-Pacific report details, excluding ZF1, KL7 and KH6, can be viewed here.

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

Roger, VK4YB, indicates that it was a “Rollercoaster ride tonight. It started poorly with storms in the Tasman Sea again and mediocre propagation. Then multiple reports from WA3TTS, KU4XR and ZF1EJ.  At 11:54, 13 DX stations responded to a single transmission, an all time high. 12 of those were more than 11,000 km distant.  Then JT9 success, QSOing Steph, VK5FQ, and Larry, W7IUV hearing very well. His report was better than Steph’s! Exciting times.  The band keeps getting better…”  He received reports from 7L1RLL4, JA3TVF, CF7MM, KJ6MKI, KU4XR, KU7Z, N1VF, N6SKM, VE6JY, VE6XH, VE7BDQ, W6SFH, W7IUV, WA3TTS, WE2XPQ, WW6D and ZF1EJ. He shared two-way reports with WH2XCR, WI2XBQ and WH2XGP.

Mike, WA3TTS, reported that he decoded ten WSPR stations overnight using the northeast antenna and later switching to the southwest antenna.  His session best DX was VK4YB at -32 dB S/N at 1058z and again at 1108z at -27 dB S/N.  Mike submitted these additional comments and statistics for the session:

“…total spots count was down at 324 overnight and moderate QRN from wx out in midwest, but I got a break with sunrise propagation on my SW EWE antenna.

I ran single band 630m with a 7 pole Butterworth filter that is less than ideal for AM BC attenuation, but the insertion loss is low and it has a series trap that nulls two very nearby 50KW stns at 1020 and 1080 kHz….

I also decided to throw an input  matching transformer into my old Heath VLF converter and run it with my e-probe and  Telefunken FZ-01 473 kHz mechanical filter. Reception was limited mostly to XXC, XZO, XHY, and XXP on the e-probe, which I have tucked into some trees about 30 feet NW of my house so it does not interact (too much) with my HF GP vertical or my EWEs in the backyard….really just a casual LF/MF/HF antenna for my boat anchor receiver room on the other side of the basement.  I did run the Heath VLF converter briefly on the SW EWE antenna and it seemed to hear reasonably well, picking up ZF1EJ and XXP with no problem around local midnight.   107 spots total overnight (mostly) on the e-probe to Heath VLF converter setup.

The e-probe pickup is 18 inches of 1/8 inch brass rod, intentionally short to limit AM BC overload from the nearby QRO stations…

When I ran the e-probe in my back yard a few years ago, it was about 6 dB down from the EWE antennas, so I think the current location is another 10dB down with the tree attenuation and closer to house environment blocking some signal pickup….”

Joe, NU6O / WI2XBQ, provided reports for seven WSPR stations and he received reports from 26 unique stations including VK2XGJ and VK3ALZ.  Joe shared two-way reports with VK4YB.

Ward, K7PO / WH2XXP, received reports from 54 unique stations including ZL2AFP, ZL4EI, VK4YB and VK2XGJ.

WH2XXP 24-hour WSPR activity (courtesy NI7J)


Larry, W7IUV / WH2XGP, provided reports for seven WSPR stations and he received reports from 38 unique stations including ZL2AFP, ZL4EI, VK2XGJ and VK7TW.  He shared two-way reports with VK4YB. As W7IUV, Larry provided reports for seven WSPR stations including W7IUV.  Larry also reported “20 JT9 decodes of VK4YB, even saw his side of QSO with VK5FQ, -18 best.”

WH2XGP session WSPR activity (courtesy NI7J)


It was noisy so I was not QRV for very long during the evening session.  Overnight I listened for VK4YB’s JT9 using a backup receiver that is probably marginal at best without a bit of receive processing.  This configuration yielded no reports but I have made some configuration changes this morning which will improve this experience in the future.  This past Summer I reconfigured my station to optimize active operating functionality, specifically improving my processes for completing QSO’s on CW and digital modes at MF and LF.  In the process, this change minimized my beaconing capabilities, including long term WSPR receiving functionality.  I’ve now made it possible that I can receive overnight without leaving the whole station running with one cable change using a separate, backup rig which should put my receiving capabilities close to on par with the main station configuration.  I will see how it plays in the coming sessions.     This morning, I began CW again around 1000z.  It was noisy but using the rotatable loop, I was able to null a bit of the noise until the Midwest was in full sun when the band quietened down.  I QRT’ed at sunrise but continue to receive with the backup system.

I posed the question this morning about JT9 versus FT8 and frequency utilization.  We have generally had a hodge-podge of  digital modes in the same area of the band using 474.2 dial frequency with JT9 existing from 1000 Hz up to about 1350 Hz and other modes fitting in between as necessary.  Do we want to continue this practice or specifically split out the FT8 and JT9?  FT8 has a worse detection limit than JT9 typically but being fast, there may be some benefit on nights where signals are relatively strong and fast QSB is present.  What do you think?

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, provided reports for seven WSPR stations including VK4YB. He received reports from 21 unique stations.  He shared two-way reports with WH2XCR.  Eden’s DX report details can be viewed here.

ZF1EJ 24-hour WSPR activity


Laurence, KL7L / WE2XPQ, indicates that it was a much better night in Alaska during this session.  He provided reports for six WSPR stations including VK4YB and WH2XCR.  DX report details can be viewed here.

WE2XPQ 24-hour WSPR activity


Merv, K9FD/KH6 / WH2XCR, provided reports for eleven WSPR stations including VK3HP and VK5FQ. He shared two-way reports with VK4YB and ZF1EJ. Merv received reports from 28 unique stations including VK2XGJ, VK3ALZ, VK3NFI, VK3WRE, VK7TW, WE2XPQ,  ZL4EI and ZL2AFP.   DX report details can be viewed here.

WH2XCR 24-hour WSPR activity



“Today’s illustration shows 630m distances between Australia and N. America breaking through imaginary distance boundaries for 630m I posted less than a year and a half ago (May 2016).

(Please let us know very first dates for these paths, if earlier than shown.)  What beyond-the-boundaries 630m distance achievements lie ahead?  TU & GL!”

Click to enlarge


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