NJDTechnologies

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Current Operating Frequency and Mode

OFF AIR but returning after dark on Saturday night

Eastern half of North America inundated with storms; QRN very high; WG2XXM –> KL7; More antenna comparisons at KL7L

– Posted in: 630 Meter Daily Reports, 630 Meters

I’m describing this session through the eyes and ears of others today as I was QRT overnight, waiting for storms.  Just a little drizzle so far but enough lightning to keep me off the air.  This may repeat for a few days.  A number of other stations in the East were also impacted by weather, either forcing them off-air or requiring changes in receive system configuration to stay safe from lightning.

Lightning 081316

12-hour overnight lightning distribution in North America

 

Geomagnetic activity appears to be in check again at quiet levels.  The Bz has been pointing to the South but solar wind velocity is finally averaging 460 km/s after nearly a week above 500 km/s.  DST values suggest recovery is in progress but time will tell:

planetary-k-index 081316

 

Kyoto 081316

 

Australia 081316

Ken, K5DNL / WG2XXM, returned to air overnight after being QRT for a week due to storms and storm potential.  Ken reports high noise level, decoding one WSPR station and he was decoded by fifteen unique stations including 25 decodes from KL7L and 33 decodes from WH2XBA/5 (KL7L).

Laurence, KL7L / WE2XPQ, made a potentially interesting observation.  While he has been performing ground wave studies with a remote receiver and his home station running WSPR, he noted variations in the flatness of the peak regions of each waveform that happened to coincide with the recent Perseid shower.  Laurence makes no judgements at this time about what is going on but it is very interesting to see, particularly since this behavior has not been previously explored.  If this behavior was the result of meteor trails, is it the result of excess ionization causing absorption or allowing a better reflector, allowing a variable peak or something else entirely?  You be the judge.  Below are the plots showing a normal session followed by the reports in question:

flatness 081316

Click to Enlarge

 

Neal, W0YSE/7 / WG2XSV, reports that he decoded WG2XXM and WH2XCR and was decoded by K2NCC, KL7L (AK, 14x), N6SKM, NO1D, VE7IGH, WH2XBA/5 (also AK, 17x), and WI2XJQ.  Neil also provided some additional analysis of recent reports with Alaska and potential obstructions contributing to report variations:

“FYI: Here are results between using my Eprobe and my TX vertical on receive last session (12 AUG ’16 UTC).

WH2XCR: the vertical averaged +2 dB advantage over the eprobe
WG2XIQ: the Eprobe averaged +1.143 dB advantage over the Vertical
WE2XPQ: the vertical averaged +2.55 dB advantage over the eprobe.

In defense of the eprobe in Laurence’s direction, the path may be partially blocked by the neighbors house in that direction. Altho my eprobe is at 25 feet, that house is also about 25 feet tall or more, and about 35 feet distant from the eprobe. Maybe the blockage is insignificant….??

The vertical is 40 feet tall with 3 sloping top wires of 25 feet each and is not obstructed in the NW direction (XPQ) nor in the SW direction(XCR). However, the lower half of it is blocked by my house in the SE direction toward Texas.

It appears that the obstructions may account for the results obtained.”

Regional and continental WSPR breakdowns follow:

NA 081316

North American 24-hour WSPR activity

 

EU 081316

European 24-hour WSPR activity

 

VK 081316

Australian 24-hour WSPR activity

 

JA 081316

Japanese 24-hour WSPR activity

 

There were no reports from the trans-Atlantic, trans-African, and trans-Equatorial paths.  UA0SNV and UB8CCT were present but no reports have been filed for the session.

In the Caribbean, Eden, ZF1EJ, reported WG2XXM:

ZF1EJ 081316

ZF1EJ 24-hour WSPR activity

 

Laurence, KL7L / WE2XPQ / WH2XBA/5 / WE2XPQ, performed a large-scale antenna comparison experiment during this session and provided the following comments:

“Set up was WE2XPQ on higher probe but inline trees  using WSPRX

WH2XBA/5 used WSJTX with deep decode, and also WSPRX using same W1VD AMRAD probe with same RF/AF source for for KL7L.

I find WSJTX “typically” gives 1 or so more dBs better and deeper decodes.

Of the two probes the higher probe generally picks up the signals first and on “average” is the better, but only in directions where deep in line closely located trees arent there – and again we are only talking about 1 or 2dB but heck thats the difference between a clean decode or nothing.

The “bad” direction for the higher probe are generally SW, and in the other directions generally has the same level of tree attenuation/dump as the probe.

thanks for the signals!

Laurence KL7L WE2XPQ  WH2XBA/5 etc….”

WE2XPQ 081316

WE2XPQ 24-hour WSPR activity

 

WH2XBA 081316

WH2XBA/5 24-hour WSPR activity

 

KL7L 081316

KL7L 24-hour WSPR activity

 

WG2XSV WE2XPQ 081316

WG2XSV, as reported by WE2XPQ

 

WG2XSV WH2XBA 081316

WG2XSV, as reported by WH2XBA/5

 

WG2XSV KL7L 081316

WG2XSV, as reported by KL7L

 

WG2XXM WE2XPQ 081316

WG2XXM, as reported by WE2XPQ

 

WG2XXM WH2XBA 081316

WG2XXM, as reported by WH2XBA/5

 

WG2XXM KL7L 081316

WG2XXM, as reported by KL7L

 

WH2XCR WE2XPQ 081316

WH2XCR, as reported by WE2XPQ

 

WH2XCR WH2XBA 081316

WH2XCR, as reported by WH2XBA/5

 

WH2XCR KL7L 081316

WH2XCR, as reported by KL7L

 

Merv, K9FD/KH6 / WH2XCR, continues to be heard as he fights through receive antenna problems:

WH2XCR 081316

WH2XCR 24-hour WSPR activity

 

WH2XCR VK2XGJ 081316

WH2XCR, as reported by VK2XGJ

 

WH2XCR VK4YB 081316

WH2XCR, as reported by VK4YB

 

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