The details for July 10, 2016 can be viewed here.
IMPORTANT REMINDER: Neither 630-meters nor 2200-meters are open to amateurs in the US yet. Please continue to be patient and let the FCC finish their processes. UPDATED: 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.
Storm conditions were similar to the previous session with increased concentration in the Midwest and Caribbean. The West also experienced significantly more storms as they transition to monsoon season. All of these storms resulted in an overall increase to the noise floor. WA3TTS reported that QRN was high and propagation was generally unfavorable.
Geomagnetic conditions continue at unsettled to storm levels. The Bz continues to be variable although values are generally pointing to the North this morning. Solar wind velocities are averaging near 625 km/s and protons have been relatively stable through the session. DST values have leveled off below the centerline in negative territory. Solarham indicates that M-class flaring is possible in the next 24-hours due to a large sunspot.
The Marine Radio Historical Society will activate KPH on Wednesday, July 12, for ‘Night of Night XVIII’. 500 kHz / 426 kHz CW will be active and more details can be viewed here.
John, VK2XGJ, reported FSQCALL signals from ZL1EE during this session.
Neil, W0YSE/7 / WG2XSV, reported that he decoded six WSPR stations including WG2XXM in Oklahoma, which was his best receive DX. He received reports for eleven unique stations, all of which were located in the West and that includes a single report by WH2XCR.
Mike, WA3TTS, reported “Only 6 stations decoded overnight, no stations from PNW even though I was using my NW EWE antenna. Best DX WH2XXP with 9 decodes, best SNR -24, with high QRN and unfavorable propagation. No WH2XND decodes on 2200m with constant S9 QRN. Other 630m stations decoded were XXM, XRM, XQU, XNG, and XXC.”
Trans-Pacific report details, excluding KL7 and KH6, can be viewed here.
Hideo, JH3XCU, submitted these tables showing peak S/N and number of reports for DX -> JA for the session.
Warwick, E51WL, provided reports for eight WSPR stations.
Roger, VK4YB, reported “Low static, average night for this time of year. VK SSB group continues as normal.” He received reports from JA3TVF, TNUKJPM, and E51WL.
Ward, K7PO / WH2XXP, provided reports for 29 unique stations including VK4YB, VK2XGJ, and E51WL.
Larry, W7IUV / WH2XGP, provided reports for eight WSPR stations and he received reports from fourteen unique stations. As W7IUV, Larry provided reports for nine WSPR stations.
Rudy, N6LF / WD2XSH/20, provided reports for seven WSPR station and he received reports from eleven unique stations including E51WL.
Joe, NU6O / WI2XBQ, received reports from thirteen unique stations including E51WL.
Ken, K5DNL / WG2XXM, provided reports for six WSPR stations and he received reports from 29 unique stations including E51WL, WH2XCR, ZF1EJ, and four Canadian stations. Ken indicated that he received a “-28 decode fm E51WL 20 min after my S.R.”
Regional and continental WSPR breakdowns follow:
Eden, ZF1EJ, provided reports for four WSPR stations and he received reports from four unique stations including WH2XCR.
Laurence, KL7L / WE2XPQ, provided reports for four WSPR stations and he shared two-way reports with WH2XCR.
Merv, K9FD/KH6 / WH2XCR, provided reports for VK3HP and ZF1EJ. He shared two-way reports with WE2XPQ and VK4YB. He received reports from E51WL and VK2XGJ. Reports from E51WL continued after sunrise in KH6 to the exclusion of VK reports. Merv’s DX report details can be viewed here.
Jim, W5EST presents “Part 5: 630m Sunsets, Hemispheres Compared”:
“Let’s continue our gallery of SNR sequences, this time comparing N. and S. Hemispheres this time of year. In the upper illustration, see late-June sunset regime SNRs on the 35w WH2XXP-n6skm path, heading 303°, distance 925 km. Station sunsets correspond to SNR above the halfway line. The sunsets are 53 minutes apart because the June sunset angle is nearly aligned with the path, so the terminator sweeps quite slowly across it. This slows down the rise in 630m radio signal SNR from day transitioning into night.
For late-June sunset on the 844 km VK4YB-vk2xgj path the interval between station sunsets on the path is only 9 minutes. The SNR levels at both sunsets were far below the halfway line in June on this 193° East Australia path, NNE-SSW. The terminator itself is almost parallel to the path, so the curtain of night sweeps more quickly across the path and speeds up SNR up-ramp rate of rise.
I don’t know about you, but all these SNR sequences are blurring into a big confusion in my head. In another blog post, perhaps we can try to figure out what’s the pattern, what’s happening behind the scenes to cause all this profusion of SNR sequences! TU & GL.”
Additions, corrections, clarifications, etc? Send me a message on the Contact page or directly to KB5NJD gmail dot (com)!