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OFF AIR but returning after dark on Saturday night

Less noise over night in North America as unsettled geomagnetic field fails to ruin the session; Another first: WI2XBQ -> VK4YB; WH2XXP, WH2XGP -> VK4YB

– Posted in: 630 Meter Daily Reports, 630 Meters

This was another good night although it was very different from recent sessions.  QRN was down for the session overall and propagation showed some instability during the early evening as JT9 QSO’s were attempted between my station and WG2XJM which watching W5EST’s live receiver / waterfall.  Just as soon as the band seemed to be lengthening out, it would shrink again.  The band lengthened out extensively as the evening proceeded but no further QSO attempts were made.

Lightning 083116

12-hour North American lightning summary


The evening instability may have been the result of the unsettled geomagnetic conditions which have been late or slow to develop over the past 24-48 hours as a coronal hole became geoeffective.  The Bz has been widely variable but is currently pointing to the North.  Solar wind velocity is averaging 415 km/s.

planetary-k-index 083116


Kyoto DST 083116


Australia 083116


Roger, VK4YB, reported weak although widespread trans-Pacific propagation ranging from Arizona to Alaska.  Roger adds, “Rx spots were aided by a low noise level as my troublesome local noise remained silent.”  Roger was the sole decoding station of signals from the North American mainland during this session.

Joe, NU6O / WI2XBQ, was reported by VK4YB during this session which is believed to the the first time that Joe has made it across the Pacific on 630-meters.  Joe has, on numerous occasions, reported VK4YB, however.  Joe was also reported by WH2XCR who has been listening on a downed dipole since one of the previous hurricanes from the Summer.

WI2XBQ VK4YB 083116

WI2XBQ, as reported by VK4YB


Larry, W7IUV / WH2XGP, reported that he was listening with the E-probe, decoding eight WSPR stations.  He was decoded by 29 unique stations including VK4YB.  Larry felt like propagation was down for this session and it may have been from Washington State due to the unsettled geomagnetic activity.

WH2XGP VK4YB 083116

WH2XGP, as reported by VK4YB


Ward, K7PO / WH2XXP, reports that he was decoded by 37 unique stations, including VK4YB although the path to VK was weaker than the previous sessions.  Ward says that his last spot by Roger, at -23 dB S/N, occurred at his sunrise at 1305z.

WH2XXP VK4YB 083116

WH2XXP, as reported by VK4YB


Doug, K4LY / WH2XZO also thought it was a quieter night and took advantage of the improved conditions.  He had these comments:

“The thunder gods must have taken a vacation.  Average SNRs reported for WH2XZO dropped from the 20’s two nights ago to the teens last night with many single digits and even four +4 spots from the great ears of WA3TTS.  We decoded six and were decoded by 20 stations.  Lots of JT9 and CW signal strengths.  I’ll try those modes in the coming weeks.”


Neil, W0YSE/7 / WG2XSV, sent the following statistics from his station:

“No JT9 decodes on my wsjtx screen this morning.  My outgoing DX was to Arizona. My incoming DX was Hawaii:



Jim, W5EST, was showcasing his receiver / remote access system utilizing “join.me”.  It was interesting to watch my signal on his waterfall in real time and also gives me a perspective of stations that Jim may be seeing that I am not.  At this time Jim has an open invitation for accessing the system at night, at least for the moment, which can be accessed here.

Rick, W7RNB / WI2XJQ, reports a good night and offered these detailed statistics from his station:

WI2XJQ 083116b

WI2XJQ 083116a


Andy, KU4XR, sent the following recording of my CW ID followed by WH2XXP’s ID.  Andy reports that there were other recordings that included WH2XZO as well.  This is very active audio but the CW does stand out:


Eric, NO3M / WG2XJM, reported that in spite of WH2XNG and VE3CIQ operating about two Hz apart, WSJT-X decoded both at 0136z.

Regional and continental WSPR breakdowns follow (There was a significant amount of map contamination in North America due to a poorly executed band selection and transition by a station in the Northeast):

NA 083116

North American 24-hour WSPR activity


EU 083116

European 24-hour WSPR activity


JA 083116

Japanese 24-hour WSPR activity


VK 083116

Australian 24-hour WSPR activity


There were no reports from the trans-Atlantic, trans-African, or trans-Equatorial paths during this session.  UA0SNV and RA9OEU were present but no reports have been filed at this time.

In the Caribbean, Eden, ZF1EJ, operated two receivers and two antennas once again having good results with stations in the southern US:

ZF1EJ 083116

ZF1EJ 24-hour WSPR activity


ZF1EJ1 083116

ZF1EJ/1 24-hour WSPR activity


Laurence, KL7L / WE2XPQ, had a nice session, reporting stations along the West coast of North America, Hawaii, and Queensland, Australia.  It seems like under unsettled geomagnetic conditions from high latitudes this has to be pretty good results:

KL7L 083116

KL7L 24-hour WSPR activity


VK4YB KL7L 083116

VK4YB, as reported by KL7L


WH2XCR KL7L 083116a

WH2XCR KL7L 083116b

WH2XCR, as reported by KL7L


Merv, K9FD/KH6 / WH2XCR, is likely experiencing elevated noise levels due to a nearby hurricane but he was still able to decode WI2XBQ during this session while listening with the 80-meter dipole laying on the ground.  Merv was also decoded by  VK4YB, VK2XGJ, and EJTSWL in Tasmania in addition to numerous North American stations.  It was nice to see to see K5FX, near Austin, Texas decode Merv during this session:

WH2XCR 083116

WH2XCR 24-hour WSPR activity


WI2XBQ WH2XCR 083116

WI2XBQ, as reported by WH2XCR



WH2XCR, as reported by EJTSWL


WH2XCR VK2XGJ 083116

WH2XCR, as reported by VK2XGJ


WH2XCR VK4YB 083116

WH2XCR, as reported by VK4YB



As you know, RRR (Remotely Re-viewable Reception) can enable and enhance JT9 QSO experiences when you use a screen-sharing app such as the Join.Me™ app as discussed 8/24-26, and 8/29-30, this blog.

Set up a free account on JoinMe.com so you don’t need to resend an e-mail invitation every time you want to screen-share. Just tell folks on ON4KST you are open for screen-sharing.  Any previous recipient conveniently already has the meeting code you sent (unless you should actually want to change it in the meantime).  For two-way screen-sharing, you already have the meeting code of any other station who at some earlier time invited you after having set up their meeting code in a free account.

Recall from yesterday the infinite-regress imaging at far left that two-way screen-sharing produces.  That’s useful to confirm to you that your screen is actually reaching the other station’s display screen.

After that first confirmation, however, you may want to dispense with the infinite-regress feature. Simply click-and-drag the other station’s screen farther to the left. That moves infinite-regress off the edge of your display and out of sight.

You can additionally increase the JT9 image size from the other station’s decoder to more nearly equalize the size of the image from your JT9 decoder and the JT9 decoder of that other station.  To do that, put the cursor on an edge or image corner of that other station’s screen, as displayed on your screen, and drag it with your mouse to expand the image of the other station’s screen to desired size.

The resulting 2-Station-JT9 RRR display is shown in today’s illustration. Your local JT9 decode screen is at right, and the slightly smaller JT9 decode screen of the distant RX JT9 decoder is at left.  At extreme far left, you can barely see your extreme-right screen side as imaged back to you from the remote station.  That station is seeing your JT9 decodes and theirs.

Communicate through just one of the chat channels that two-meeting two-way screen-sharing gives you, preferably the particular chat channel that the first-op-to-use does use. Getting into a habit that way more conveniently maintains important info each 630m op sends the other 630m op.

Why are some modestly additional operator manipulations worth your time to get the 630m advantages of two-way screen-sharing? Here are some reasons that two-way RRR makes sense.  As they say, “Think about it!”

    • –Picture a first station with 630m RX1 and a second station with 630m RX2. Each station has useful 630m JT9 decode information to send to the other, which incentivizes such screen-sharing.  630m signals on long paths are often decodable at one station and only then another in the same region.
    • –Neither the RX1 nor the RX2 station needs to put up another antenna nor add another receiver nor any special phaser or combiner circuitry. Download a screen-sharing app instead.
    • –A DX station TX0 may receive a JT9 station TX1 but not TX2 when the JT9 QSO is attempted. You don’t know which of TX1 or TX2 the DX station will decode.  Say it’s TX2.  With the benefit of both RX1 and RX2 receiving some JT9 decodes from that DX station applicable to TX2, that TX2 station will have the opportunity to complete what may be an otherwise impossible QSO.
    • –Due to the vagaries of 630m propagation, the TX1 station may become favored over TX2 some other time that evening or night. Every participating station can benefit from RRR sooner or later.
    • –Attempts to achieve one or two long path JT9 QSOs by both TX1 and/or TX2 with a distant station TX0 can feasibly be intertwined over the same time interval because different JT9 stations use different TX frequencies. Meanwhile, their receivers RX1 and RX2 synergistically enhance both efforts.
    • –Each of TX1/RX1 and TX2/RX2 can also benefit from screen-sharing with an RX3-only station in their region. That’s because screen-sharing allows multiple participants.
    • –A TX station might have an excellent 630m TX antenna but relatively poor RX antenna capability while an RX-only station may be optimized for 630m reception. Each op can depend on and benefit from the other’s hard work putting specialized features into place.

Who will be first to complete a 630m coast-to-coast N. America JT9 QSO this season?

Can any station from California to BC do a 630m JT9 QSO with New England or any coastal East or Southeast USA state?

Can Alaska and USA mid-South (or farther) do a 630m JT9 QSO?

Who will be first to achieve an intercontinental transoceanic 630m JT9 QSO?

Who will demonstrate 630m 2000+ km JT9 QSOs five consecutive nights?

Let’s blog 630m stations and the dates they accomplished any of these feats in past years too. What preparations do you recommend?  Tell us your experiences–and GL on JT9!”


W5EST 083116a

click to enlarge


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