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OFF AIR; QRT Thursday night but back Friday morning by 1100z

Hard to match previous session as geomagnetic conditions calm and trans-Pacific path becomes less robust; BX2ABT listening in Taiwan

– Posted in: 630 Meter Daily Reports, 630 Meters

No matter how this session progressed, if it was any less than the previous it was probably going to be a bit of a disappointment.  Even so it was a good night, particularly domestic reports around North America.  QRN really depended on where you were located.  An active weather system in the north central US really did not impact me down here but WH2XGP indicated high noise during an 0400z JT9 session.  This morning was more noisy for me as I called CQ on CW, listening for calls before my daily sked.  I suspect the source was located in New Mexico and Colorado.

Lightning 090616

12-hour North American lightning summary


Geomagnetic activity returned to quiet levels after a number of days of high solar winds caused by a geoeffective coronal hole.  The data suggests that the hole helped North / South propagation, while impeding higher latitude East / West paths.  In general, paths away from electron density were favored but even stations like KL7L enjoyed surprisingly good band conditions and reports.  This is the most surprising.  It seems clear that there are other elements at work with the magnetic field to promote good long-haul propagation as has been observed over the previous few sessions.  The Bz is now pointing to the North and solar wind velocities are averaging 480 km/s, down significantly from the 700 km/s peak observed days ago.  Through this entire episode, the DST was negative, which typically suggests very poor conditions.  What was different about this event, however, is that the extreme negative values of DST were not observed compared to previous events.  Perhaps this is ‘a’ missing link to the puzzle if one could identify why DST wasn’t as profoundly negative.  Were we just lucky that disruptive elements did not manifest?

planetary-k-index 090616


Kyoto DST 090616


Australia 090616


Ward, K7PO / WH2XXP, reports that he was decoded by 50 unique stations, including EJTSWL, VK4YB, VK2XGJ, VK2DDI, and VK5ABN, who reported Ward for the first time.  Ward indicates that VK4YB, VK2DDI, and VK5ABN were received at his 1312z sunrise:


WH2XXP, as reported by EJTSWL


WH2XXP VK4YB 090616

WH2XXP, as reported by VK4YB


WH2XXP VK2DDI 090616

WH2XXP, as reported by VK2DDI


WH2XXP VK2XGJ 090616

WH2XXP, as reported by VK2XGJ


WH2XXP VK5ABN 090616

WH2XXP, as reported by VK5ABN


Larry, W7IUV / WH2XGP, reports that he decoded nine WSPR stations as he spent the session listening to the West using the Flag.  He was decoded by 25 unique stations. He shared two-way reports with VK4YB and was decoded by ZF1EJ, VK2DDI and EJTSWL.  Larry indicates that he was decoded by a few stations in the East but that path is still not up to par.  It could be that the wall of storms in Wisconsin and Minnesota impacted hearing on the path.

VK4YB WH2XGP 090616

VK4YB, as reported by WH2XGP


WH2XGP VK4YB 090616

WH2XGP, as reported by VK4YB



WH2XGP, as reported by EJTSWL


WH2XGP VK2DDI 090616

WH2XGP, as reported by VK2DDI


Rudy, N6LF / WD2XSH/20, shared two-way reports with Roger, VK4YB:

VK4YB WD2XSH20 090616

VK4YB, as reported by WD2XSH/20


WD2XSH20 VK4YB 090616

WD2XSH/20, as reported by VK4YB


Steve, VE7SL, was “transmit-only” during this session of down propagation and was reported by 22 unique stations including VK4YB for a second consecutive day:

VE7SL VK4YB 090616

VE7SL, as reported by VK4YB


Neil, W0YSE/7 / WG2XSV, returned to transmitting  after his previous sessions of receiving JT9 and testing two independent systems.  Those tests revealed nothing out of the ordinary.  The large aperture transmit antenna under relatively quiet conditions will usually beat  a probe in head-to-head competition but the probe can surprise sometimes.  In this test, there was nothing remarkable.  Also variations in sound devices did not yield any significant outlier reports.  Neil provided the following statistics and comments in addition to a capture of his JT9 console on his virtual receiver/decoder accessible via join.me:

WG2XSV 090616


WG2XSV JT9 090616

WG2XSV JT9 session receive data accessible from join.me on selected nights


Rick, W7RNB / WI2XJQ, reports that band conditions seemed down during this session and provided the following statistics from his station:

Wi2XJQ 090616a

Wi2XJQ 090616b


Mike, WA3TTS, curiously decoded some stations in the Pacific Northwest while missing others.  It could be noise but its probably more complicated than that alone.  Mike presents the following statistics and comments for his session:

WA3TTS 090616a

Mike adds:

“I checked XKA’s reception with search by distance in WSPR DB and no west coast at all from him. SWL/K9 heard XSH/20 and XGP but not VE7SL for best dx…”

WA3TTS 090616c


JB, VE3EAR, provided the following sample reports from his MF WSPR2 session as posted on LOWFER:

“0504 -29 -1.6   0.475748  0 VE3CIQ FN15 30
0506 -25 -1.5   0.475723  0 WG2XKA FN33 30
0518 -21 -1.5   0.475641  0 WH2XZO EM85 27
0518 -26 -2.0   0.475792  0 WG2XIQ EM12 37
0520 -25 -1.6   0.475677  0 WE2XGR/3 30
0522 -20 -1.6   0.475723  0 WG2XKA FN33 30
0524 -26 -1.7   0.475748  0 VE3CIQ FN15 30
0524 -24 -2.0   0.475791  0 WG2XIQ EM12 37
0526 -18 -1.4   0.475641  0 WH2XZO EM85 27
0532 -24 -1.9   0.475791  0 WG2XIQ EM12 37
0534 -23 -1.6   0.475749  0 VE3CIQ FN15 30
0536 -28 -1.6   0.475641  0 WH2XZO EM85 27
0536 -19 -1.4   0.475723  0 WG2XKA FN33 30
0540 -20 -1.4   0.475641  0 WH2XZO EM85 27
0544 -27 -1.6   0.475748  0 VE3CIQ FN15 30
0548 -19 -1.6   0.475641  0 WH2XZO EM85 27
0548 -23 -1.7   0.475677  0 WE2XGR/3 30
0550 -14 -1.4   0.475723  0 WG2XKA FN33 30
0550 -26 -1.6   0.475790  0 WG2XIQ EM12 37
0556 -26 -1.6   0.475748  0 VE3CIQ FN15 30
0604 -25 -1.6   0.475641  0 WH2XZO EM85 27”


Doug, K4LY / WH2XZO, was strong here very early in the evening and was hearing well.  He provided the following comments:

“Although QRN was moderate, the NW-SE path was not open from SC.  The RX loop was relocated down the hill, but further away from the house, and it heard much better- 8 unique decodes.  The top of the hill is some 40′ higher about 500′ to the northwest.

The 25 watts TPO and about 1/2 W ERP were decoded by 23 stations with many at CW levels.  I continue trying to change the position of top hat wires to what hopefully will be safe for the higher voltages present when I increase power.  Hope to get that done soon with early season goal, far out I know, to be heard down under.”


Regional and continental WSPR breakdowns follow:

NA 090616

North American 24-hour WSPR activity


EU 090616

European 24-hour WSPR activity


VK 090616

Australian 24-hour WSPR activity


JA 090616

Japanese 24-hour WSPR activity


Hans, BX2ABT, was present from Taiwan for the first time during this session.  Although no reports were filed, its great to have a station from this region receiving.  Steve, VE7SL, indicates that he has been corresponding with Hans for a few years now who has an LF loop and an interest in listening for NDB’s.  Hopefully the noise level at 472 is reasonable enough for decodes in the future:

CH 090616

BX2ABT in Taiwan


There were no reports from the trans-Atlantic, trans-African or trans-Equatorial (NA/SA) path.  UA0SNV was present but no reports have been filed at this time.

Eden, ZF1EJ, continues to operate with two receivers and two antennas, providing the following reception reports from the Caribbean:

ZF1EJ 090616

ZF1EJ 24-hour WSPR activity


ZF1EJ1 090616

ZF1EJ/1 24-hour WSPR activity


Laurence, KL7L / WE2XPQ, reported this morning that WSPRx was not uploading and because he was accessing his system remotely on his phone he was unable to upload data manually at that time.  He reports that he will do this later from a proper terminal.  He started WSJTx this morning so spot, as reported, are incomplete at this time:

KL7L 090616

KL7L incomplete session database


VK4YB KL7L 090616

VK4YB, as reported by KL7L


Merv, K9FD/KH6 / WH2XCR, was QRT during this session so there were no signals originating from Hawaii overnight.


“The last few days I have described the Join.Me app. But it’s just one of different apps that 630m ops can use for screen sharing.  JT9 decoder screen-sharing lets you see JT9 decodes that 630m propagation conveys to another station when it misses yours. Thanks to Joe NU6O WI2XBQ for letting me view his SDR/PC using the TeamViewer® app recently. Background: https://www.teamviewer.com/en/

TeamViewer lets you set up a meeting for screen-viewing.  There is also an option for remote controlling your shack computer or someone else’s with their permission.  For our JT9 purposes, you don’t need to permit remote control of your PC. And, of course, only use someone else’s remote computer in the way intended for you as invitee if they give you remote control.  As with most free software, when installing be careful to avoid unwanted software offers and expensive upgrades that the provider’s install mode or the web site is intended to also purvey.

Here’s how to get started with TeamViewer for remote JT9 viewing. Both stations download TeamViewer software from: https://www.teamviewer.com/en/download Activate the download from your specific choice for your type of PC operating system: Windows, Mac, Linux, Chrome OS, Android. Go through the installation steps.

If you are invited by another 630m op, simply click on the TeamViewer link they send. If they have sent Meeting ID information instead, enter it into your TeamViewer window to access the meeting.

If you want to set up a meeting, click at lower right of your TeamViewer window, set up a free account, and schedule a meeting. Make your JT9/WSPR decoder screen easily visible on your desktop. Then invite others by posting a TeamViewer meeting link to the ON4KST reflector or e-mailing it to each invitee.  The link format goes like this:   http://go.teamviewer.com/v11/m26195528 .  The meeting ID is “m#”.

Enjoy! …So I did, at Joe’s invitation.  The ON4KST reflector tells what transpired.

07:31:58WI2XBQ Joseph  my SDR is up on BC band try the audio

07:37:36W5EST Jim  Do I download Teamviewer app before calling? Wud it be ok u give a link to click to view. tu

07:39:20WI2XBQ Joseph  just download the app and put in number and pass should hook right up

07:40:02WI2XBQ Joseph  I seeing carriers from asian AM stations already. Might be a good overnight

07:52:28W5EST Jim  Joe, I can see ur bcb sdr screen fb. tu. can u put jt9 up some nite too.

08:03:02W5EST Jim  tu allowing remote control. I put it on jt9 then returned it to wspr. bbl. tu!

Joe has more to say about broadcast band stations vis-a-vis 630m for another day’s blog.  Stay tuned!

Since different 630m ops will use their particular favorite screen-sharing apps, you can get acquainted with different apps over time and be nimble for longer path 630m JT9 action this season.  GL and go JT9!”


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