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

More trans-Pacific propagation and good domestic CW / JT9 conditions as geomagnetic field returns to quiet levels

– Posted in: 630 Meter Daily Reports, 630 Meters

It was another good session that started before sunset at my stations with KU4XR decoding my WSPR signal first.  WD2XSH/15 was strong here and by sunset a significant number of strong reports were already being registered around the country.  In a month or so it may be reasonable to call CQ on CW during the transition to darkness and find stations that are workable.  I am hopeful about the coming season.  The noise floor was not a problem here, even when listening to the Northwest which was separated from my station by active evening storms in the panhandle of Texas.  By morning storms were active in the central US and upper Midwest:

Lightning 090716

12-hour North American lightning summary


Geomagnetic conditions have returned to mostly quiet levels.  The Bz is pointing to the South and solar wind velocities are averaging 475 km/s.  DST continues in negative territory but is levelling-off.

planetary-k-index 090716


Kyoto DST 090716


Australia 090716

Band conditions were good enough for any number of JT9 QSO’s across the country in addition to CW QSO’s with select stations at various times though the session.  After a few minutes of calling CQ on CW I got a message from my morning sked partner that he was sleeping in.  So instead I called CQ with JT9 and concurrently received WG2XSV’s JT9 beacon.  Signal levels were good enough in both directions for an easy QSO.  I was also received at W5EST and SWL-EN61 in Indiana.  Screen captures follow:

WG2XSV JT9 090716

WG2XSV join.me session showing JT9 reports for VE7CNF and WG2XIQ (click to enlarge)


W4EST JT9 090716

W5EST join.me JT9 session reports


SWLEN61 JT9 090716

SWL-EN61’s JT9 reports from this morning using an indoors antenna


Trans-Pacific activity persists for a number of stations and Roger, VK4YB, posted the following statistics in the ON4KST chat / logger about his activity:

“Spots were 14*WG2XXM (-22) 21*WH2XGP (-18) 31*WH2XXP (-17) 7*VE7SL (-27) 4*WD2XSH/20 (-24) 23*WH2XCR (-13).  Decoded by WH2XGP, WD2XSH/20, N6SKM, WI2XBQ, and  WH2XCR”


Larry, W7IUV / WH2XGP, reports that he decoded ten WSPR stations during the session, including VK4YB.  He used the E-probe until just before sunrise and reports that he did not hear any East coast stations.  Larry was decoded by 34 unique stations including ZF1EJ and five VK’s, the furthest and newest report from VK5ABN at a distance of 13575 km.

WH2XGP 090716

WH2XGP session WSPR activity (courtesy NI7J)


WH2XGP VK5ABN 090716

WH2XGP, as reported by VK5ABN


VK4YB WH2XGP 090716

VK4YB, as reported by WH2XGP


WH2XGP VK4YB 090716

WH2XGP, as reported by VK4YB


WH2XGP VK2XGJ 090716

WH2XGP, as reported by VK2XGJ


WH2XGP VK2DDI 090716

WH2XGP, as reported by VK2DDI



WH2XGP, as reported by EJTSWL


Ward, K7PO / WH2XXP, received decodes from 46 unique stations including six VK stations.   There were late reports from VK4YB at -28 dB S/N, 14 minutes after sunrise at 1324z:

WH2XXP 090716

WH2XXP session WSPR activity (courtesy NI7J)



WH2XXP, as reported by EJTSWL


WH2XXP VK2DDI 090716

WH2XXP, as reported by VK2DDI


WH2XXP VK2NP 090716

WH2XXP, as reported by VK2NP


WH2XXP VK2XGJ 090716

WH2XXP, as reported by VK2XGJ


WH2XXP VK4YB 090716

WH2XXP, as reported by VK4YB


WH2XXP VK5ABN 090716

WH2XXP, as reported by VK5ABN


Ken, K5DNL / WG2XXM, reports that he decoded seven WSPR stations and was decoded by 45 unique stations including VK4YB and VK2DDI:

WG2XXM VK2DDI 090716

WG2XXM, as reported by VK2DDI


WG2XXM VK4YB 090716

WG2XXM, as reported by VK4YB


Steve, VE7SL, was “transmit-only” during this session and was decoded by 23 unique stations, including VK4YB:

VE7SL VK4YB 090716

VE7SL, as reported by VK4YB


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

VK4YB WD2XSH20 090716

VK4YB, as reported by WD2XSH/20


WD2XSH20 VK4YB 090716

WD2XSH/20, as reported by VK4YB


Joe, NU6O / WI2XBQ, decoded VK4YB also but was otherwise “receive-only” all night:

VK4YB WI2XBQ 090716

VK4YB, as reported by WI2XBQ


N6SKM decoded VK4YB for the second time ever during this session:

VK4YB N6SKM 090716

VK4YB, as reported by N6SKM


Mike, WA3TTS, had a strong session of transcontinental reports into the Pacific.  Mike explains:

WA3TTS 090716


WA3TTS 090716b

WA3TTS session WSPR activity


Rick, W7RNB / WI2XJQ, provided the following statistics from his session:

WI2XJQ 090716a


WI2XJQ 090716b


Neil, W0YSE/7 / WG2XSV, was “receive-only” overnight and provided the following statistics and comments:

WG2XSV 090716 rx


KD5DFL in Louisiana was present for the first time during this session and did a nice job decoding a number of stations across North America.  Welcome aboard!

Regional and continental WSPR breakdowns follow:

NA 090716

North American 24-hour WSPR activity


EU 090716

European 24-hour WSPR activity


JA 090716

Japanese 24-hour WSPR activity


VK 090716

Australian 24-hour WSPR activity


CH 090716

Taiwanese 24-hour WSPR activity


There were no reports from the trans-Atlantic, trans-African, or trans-Equatorial paths.

Eden, ZF1EJ, heard a number of stations, including WH2XGP and WG2XKA:

ZF1EJ 090716

ZF1EJ 24-hour WSPR activity


ZF1EJ1 090716

ZF1EJ/1 24-hour WSPR activity


Laurence, KL7L / WE2XPQ, only had reports for WH2XCR during this session:

KL7L 090716

KL7L 24-hour WSPR activity


WH2XCR KL7L 090716

WH2XCR, as reported by KL7L


Merv, K9FD/KH6 / WH2XCR, had a very strong session after being gone in the previous session.  With the receive dipole still on the ground, Merv managed to decode VK4YB, WD2XSH/20, and WH2XXP.  WA3TTS decoded Merv for the first time this season and reports into North American and Australia were numerous and strong:

WH2XCR 090716

WH2XCR 24-hour WSPR activity


WD2XSH20 WH2XCR 090716

WD2XSH/20, as reported by WH2XCR


WH2XXP WH2XCR 090716

WH2XXP, as reported by WH2XCR


VK4YB WH2XCR 090716

VK4YB, as reported by WH2XCR


WH2XCR VK4YB 090716

WH2XCR, as reported by VK4YB


WH2XCR VK5ABN 090716

WH2XCR, as reported by VK5ABN


WH2XCR VK2XGJ 090716

WH2XCR, as reported by VK2XGJ


WH2XCR VK2NP 090716

WH2XCR, as reported by VK2NP


WH2XCR VK2DDI 090716

WH2XCR, as reported by VK2DDI



WH2XCR, as reported by EJTSWL


Jim, W5EST, provided this discussion, entitled, “HUNTING FOR TRANSPACIFIC CORRELATIONS BETWEEN BCB AND 630M”:

“Joe NU6O WI2XBQ tells about his ongoing efforts to find correlations between broadcast band DX* stations vis-a-vis 630m DX propagation.  DX locations can also find N. America BCB stations from further links.**

Joe WI2XBQ to JH, Sept. 5:   You might have seen a discussion I had with Roger VK4YB about using high power broadcast stations as propagation beacons. There is a big 50KW station on 612Khz 4QR in Brisbane about 20 mi. from Roger. Over several nights, when its carrier-to-noise C/N = +30 dB or better, Roger will spot me. There is very high correlation and it’s very predictable. Last night I started receiving carriers from AU / NZ BC stations well before local sunset down there.  4QR on 612 KHz is a clear channel no other high power stations in AU or NZ are on this frequency. 621 KHz is a clear channel in Wellington, NZ. JA freqs are 747 and 774 KHz.  Roger spotted XXM about 20 min. before SS. He spotted me about 20 min. after SS.

For several years I have been trying to find a correlation between JA BC station reception and openings into Asia. There is very poor to no correlation even though the stations can be very strong. Two nights ago 774KHz in Akita, Japan, was strong enough to hear the program, but no spots to JA by anyone was reported. This is the usual case.

I should also mention I am using a Mercury SDR*** receiver to hear the BC stations. There is very strong interference from domestic AM stations only a few Khz away, so very good IM performance is required. Also narrow filters to pick out the carriers from the sideband trash.

Hopefully others will be interested and investigate other paths to see if this is a valid method to predict propagation.  Joe.

Jim W5EST reply:  This BCB DX method complements NDB listening.  The carrier of the BCB DX can be powerful enough to disclose an SNR trend on its propagation path across an ocean before any DX decodes on 630m occur. Some BCB DX assignments in east Asia actually coincide with 630m, see a station list.*

The BCB path geometry may be similar enough to 630m path geometry to correlate with 630m nighttime prospects on a given night.  To enhance the chances of path similarity, one looks to stations at BCB low frequencies such as 4QR where 612 KHz/475KHz = 1.29 or less than 30% higher frequency.

BCB RF will probably penetrate higher into the E-region than 630m before reflecting, so the BCB path won’t be identical to the 630m path. Even 630m itself may “spotlight” into DX locations and reduce correlations. Also, if BCB RF drills through the E-region and reflects from the F-region while 630m still mostly reflects from E-region, then the propagation paths of BCB vs. 630m will be radically different.

In the end persistence pays off, as Joe has demonstrated at WI2XBQ!


BCB DX by freq. Select world region. Click on a frequency and scroll down to see stations.

http://dxworld.com/cgi-bin/bcbdx.cgi  BCB DX station list by frequency.

http://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=4&ved=0ahUKEwj9qZ2iuP3OAhUFRyYKHZ4aBQQQFggvMAM&url=http%3A%2F%2Fwww.vk5pas.com%2Fuploads%2F1%2F3%2F9%2F8%2F13982788%2Fadxn554.pdf&usg=AFQjCNHF8Jk-dtQn0EMBBRLR1KTjCawVQw  Australia, New Zealand, Oceania. (scroll 80% for BCB).

** http://www.am-dx.com/fcclist.htm  N. America & DX BCB stations & some azimuth patterns.  http://dxworld.com/cgi-bin/ambcb.cgi?.  Canada, Cuba, Mexico, USA BCB station list.

*** http://www.tapr.org/kits_merc.html



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