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TOPIC: 5MHz BEACON and PROPAGATION STUDY

5MHz BEACON and PROPAGATION STUDY 3 weeks 2 days ago #1958

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The project is performing well. ZS6KTS is still the reference beacon and measurements are compared against it.

This is the latest map from last night :)

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5MHz BEACON and PROPAGATION STUDY 4 weeks 6 hours ago #1952

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Hi All,

Please find the latest installment of Paul (G4MWO) Gaskell's 5 MHz newsletter.

This is the 12th edition for Autumn 2014.

There is an entire page dedicated to 5 MHz in South Africa!

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File Name: The5MHzNewsletterNo.12Autumn2014.pdf
File Size: 459 KB
Last Edit: 4 weeks 6 hours ago by ZS6SGM.
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5MHz BEACON and PROPAGATION STUDY 4 weeks 1 day ago #1951

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Good news!

ZS1TB was a receiving only beacon and is now a transmit beacon. Thanks Rassie!

It is running from the Cape Peninsula University of Technology.

The ZS1 region activity is looking good!

Last Edit: 4 weeks 1 day ago by ZS6SGM.
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5MHz BEACON and PROPAGATION STUDY 1 month 5 days ago #1946

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Hi All,

Good news the project is moving forward at a positive rate. The South African data is coming along nicely. Would like more operators in ZS1 and ZS5 to participate.

Last night we broke a distance record on WSPR on 5 MHz.

The new record is 16,623 km and the spots were decoded by WA7IJV (Michael Latshaw). (ZS6KTS to WA7IJV)

The station decoded ZS6SRL with 22 spots with SNR levels ranging from -25 dB to a very very respectable -13 dB
The station decoded ZS6KTS with 5 spots with SNR levels ranging from -28 dB to -21 dB

It was both ZS6SRL and ZS6KTS which were decoded.
ZS6KTS is running 5W and ZS6SRL is running 10W

Performance of ZS6KTS is 3,300 km per Watt!
Performance of ZS6SRL is 1,660 km per Watt!

2014-11-13 03:32 ZS6SRL 5.288740 -13 0 KG33wv 10 WA7IJV CN85vi 16603 317 317
2014-11-13 03:24 ZS6KTS 5.288663 -21 0 KG43cw 5 WA7IJV CN85vi 16623 317
Last Edit: 1 month 5 days ago by ZS6SGM.
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5MHz BEACON and PROPAGATION STUDY 1 month 2 weeks ago #1935

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Some more news.......

From the Southgate Amateur Radio News page....... www.southgatearc.org/news/2014/november/...research_project.htm

The 5 MHz propagation research project show unexpected results.
One of the most interesting findings is the inconsistency in the results of Near-vertical-incidence sky wave propagation (NVIS).

Comparing a communications path between two amateur stations, ZS6KN and ZS6KTS (a distance of 51 km) it is interesting to note that in June 2014 there was a good communications path from just after 05:00 until approximately 16:30 after which the signals disappeared. The pattern for July was the same, but signals were considerably stronger than during August and September.

During September, a strong dip in signal strength can be seen. The other interesting observation from the graph is that propagation "opens" earlier and closes later as we go into summer which indicates variations in the ionisation of the D layer of the ionosphere as the sun rises earlier and sets later.

Not enough data has been collected to make any meaning full conclusions. If the path was a pure ground wave, the signals would have been more or less constant throughout the day and night.

The article will be published in the November/December edition of EngineerIT and is already available on the web. You can find the link on www.sarl.org.za, click on propagation research. You will find links to the article as well as a report of the first six months.

ZS6SRL.jpg


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5MHz BEACON and PROPAGATION STUDY 1 month 2 weeks ago #1934

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Hi Guys,

It is with great pleasure that I link you to the latest 5 MHz WSPR report (for the 6 months ended Oct 2014) which is posted on Amateur Radio today Propagation Research page.

Here is the link to the report.

www.amateurradio.org.za/Report%20on%20th...20October%202014.pdf

Or if that URL is messy, here is a shortened URL pointing to the same place:
bit.ly/13hDzMA

Hope you enjoy reading the report and let me know any comments. Enjoy the flea market this weekend, I will be presenting the WSPR research at the CPT RTA on Saturday.

73 from ZS6SGM
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