NJDTechnologies

Radio: it's not just a hobby, it's a way of life

Current Operating Frequency and Mode

OFF AIR but will be QRV on CW somewhere between 472.5 kHz and 475 kHz after dark

SCHEDULED ACTIVITY: CQ 474.5 kHz CW by 1030z through sunrise most days, WX permitting

This session not quite as good as previous but average conditions continue

– Posted in: 630 Meter Daily Reports, 630 Meters

This session was a bit noisier here in Texas than previously observed.  This noise manifested itself as less prolific S/N reports on a variety of skywave paths.  The geomagnetic conditions have been relatively quiet and the Bz is pointing slightly to the South.  Solar wind velocity is low, averaging 370 km/s.  DST values experienced the beginning of a pronounced decrease:

planetary-k-index 072216

 

Kyoto DST 072216

 

Australia 072216

 

Merv, K9FD/KH6 / WH2XCR, reports that a hurricane may be taking aim for his QTH.  I don’t think there is any data for 630-meter activity in the eye of a storm like this and given the history of terrestrial weather impacting propagation in the Pacific, this could provide some interesting data.  Merv offers the following comments:

“John,  this may get nasty yet,  the hurricane is now changed path and
headed right at us,  they show a lot of computer models and about
half or more of the tracks show direct hit,  and possibly Maui and Molokai
but still time to shift course as they do on occasion..

Wonder if anyone has tried 475KHZ propagation during a hurricane..
Will keep operating as long as the antenna is in the air..
And electric power is on.
They are now saying it will be here Sunday or Sunday night, depending
on the path.
GUess I better make a run to town for water,  have plenty toilet paper and
groceries to hold me for a month or so.  LP gas for my camp stove etc
Batteries I do need.

But no worries,  they change the course on these things every few hours..

73 Merv  reporting from hurricane central with a 2500 mile swim to the next
land of safety.  hmmm”

Ken, K5DNL / WG2XXM, reports that he decoded four WSPR stations including VE7SL and was decoded by seventeen unique stations including new station KI4ENY near San Antonio, Texas and 25 decodes from WH2XCR, best at -17 dB S/N.

Neil, W0YSE/7 / WG2XSV, notes an interesting disparity in transmit and receive reports.  It seems several stations had Internet and / or WSPRnet upload issues and this contributed to the mystery.   Neil provided the following comments and statistics:

WG2XSV 072216

Roger, VK4YB, reports good local propagation with decodes at VK2XGJ of +20 dB S/N.  He notes difficulties decoding WH2XCR, however, and the noise floor is only 77 dBm as the result of suspected local noise.

Regional and continental WSPR breakdowns follow:

NA 072216

North American 24-hour WSPR activity

 

EU 072216

European 24-hour WSPR activity

 

JA 072216

Japanese 24-hour WSPR activity

 

VK 072216

Australian 24-hour WSPR activity

 

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

In the Caribbean, Eden, ZF1EJ, reported WG2XXM and WG2XIQ:

ZF1EJ 072216

ZF1EJ 24-hour WSPR activity (Note:  Amateur stations listed are result of band transition error)

 

Laurence, KL7L / WE2XPQ, reported just about the same stations as the previous session, including WH2XCR and WG2XXM:

WE2XPQ 072216

WE2XPQ 24-hour WSPR activity

 

WG2XXM WE2XPQ 072216

WG2XXM, as reported by WE2XPQ

 

WH2XCR WE2XPQ 072216

WH2XCR, as reported by WE2XPQ

 

Merv, K9FD/KH6 / WH2XCR, is preparing for a possible hurricane strike on his island but managed to keep the station active.  It will be interesting to see if there are observable propagation variations if the storm comes on shore later this weekend:

WH2XCR 072216

WH2XCR 24-hour WSPR activity

 

WH2XCR VK2DDI 072216

WH2XCR, as reported by VK2DDI

 

WH2XCR VK4YB 072216

WH2XCR, as reported by VK4YB

 

VK4YB WH2XCr 072216

VK4YB, as reported by WH2XCR

 

WH2XCR VK2XGJ 072216

WH2XCR, as reported by VK2XGJ

 

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