The Weak Signal Propagation Reporter Network is a group of amateur radio operators using K1JT's MEPT_JT digital mode to probe radio frequency propagation conditions using very low power (QRP/QRPp) transmissions. The software is open source, and the data collected are available to the public through this site.

UN SALUDO PARA TODOS
73, Rafa EA4CU

I also work in the same office as M0SAR
And he got me interested in WSPR, I'm going try on 10m 14/4/10
and see where i can see.....

73 De G7VQV Allan Nr Southampton

... for getting me interested in WSPR, that is.

The Echelford Amateur Radio Society (Surrey, UK - http://beam.to/ears) was fortunate enough to have Walter as guest speaker last Thursday (8th April, 2010), explaining the ins and outs of using WSPR, in a most entertaining and informative manner. I had to give it a try.

Anyone in Europe on 6M today, I am TXing on 6M 5W,

73
Rob
MW0CVT

Been monitoring and able to hear a few stations here and there.
Has anyone heard any of my transmissions yet?
Only running QRP (2 Watts - ish) I assume that is within the criteria.

I am now testing the "wrong band reported" piece of the data scrubber. A quick check seems to indicate that it's correctly identifying all the cases reported to the forum over the last few weeks, and well as quite a few others.

Some quick statistics on the data filtering based on the last two weeks of data:

Bad calls (bogus decodes): 0.1% of all spots
Bad timestamp: 0.1%
Duplicate reports: 1.7%
Wrong band: 0.6%

So, about 2.5% of spots are being filtered. Duplicate reports include multiple reports of same station in same band by same reporter at same timestamp, so if you are gettting mutliple decodes of same station in the passband because of heterodyning in the rx or tx, this filter will keep only the strongest report.

Since the wrong band percentage is low (<1%), I'm inclined to just delete the incorrect band reports rather than try to fix them in place. The data is always there to do that later if it is somehow important.

Note for stations running simultaneous multiple tx or multiple rx in one band:

These few spots slipped through when I was changing from 30m to 60m at 08:16 on 07 APR 2010

I have (finally) implemented a data scrubber for the spot database. It currently handles several situations:

1) identifying and deleting bogus spots (bad callsigns)
2) bogus timestamps (delete if too old or fix if odd-minute report)
3) remove duplicate spots of same station on same band by a reporter, such as those caused by power line noise in tx or rx (it keeps the strongest report in a given time slot)

2010-04-04 16:16 G6HHP 10.140193 -13 -1 JO01hn 5 ZL2IFB RF80hl 18641 15
A record for this station - would like to make it 2 way , but, in the middle of a town not always possible.
There is hope yet for G6HHP and his 50 W and long wire (running N-SOUTH).

My log

73's from Phil

IN88XM Dinan
West part of France

Here is the text from the database

2010-04-02 17:38 G6HHP 10.140191 -18 0 JO01hn 5 VK2/VK6DI QF55hf 16984 64

I was pleasantly suprised to see this in the database this am.

I run abt 50 w into a lomg wire at 15 m agl - only have a small garden out back so restricted.
Also run an Isotron ant for 40m

Is this Long path or Short path ?

73 de Stan G6HHP / M0CZI SOUTHEND ON SEA , ESSEX , ENGLAND.

I am setting up my 600M receiving station, using a small loop antenna, homebrew pre-amp and my HP3586B Selective receiver. I am also setting up a BC-453 receiver for 500kc as well. (Now you know how old I am) Hertz still sounds funny! The rest of my station is composed of several Swan transceivers, a Yaesu FT757, FT-60, and miscellaneous homebrew receivers/ oscillators/ and other projects.
I am limited in space for full size antennae below 40M, but have my 5btv 18AVQ for those.

More to come.....

Vienna, April 2nd, 2010

Six months after bringing V53ARC online, the second WSPR beacon in Africa got into service. 5X7JD went online today. The beacon is hosted by Jack, 5X7JD who is located in Masaka, Uganda.
Jack Dunigan, a US citizen, is permanently located in Uganda working for AIDCHILD, an organization with homes, clinics, and academies for orphans who are abandoned and living with AIDS. Visit www.aidchild.org, donations are very welcome.

Same as the Namibia system, the beacon was developed and funded by Gernot Frauscher, OE1IFM. Visit www.oe1ifm.at to find out more about the beacon project. The system has 1W output and cycles through 80,40,30,20,17,15,12 and 10m, so one can hear the WSPR signal returning every 16 minutes. Antenna is an HyGain Av 18VS multi-band vertical. The beacon hardware is an embedded system based on a PIC 18F2455 MCU, an Analog AD9851 DDS chip and a MOSFET PA with selectable filters. Time and location information are derived from an attached GPS receiver. This beacons will be available as a kit soon and we are looking for hosts in interesting locations.

Spent the morning setting up G5RV Jr wire antenna with my friends and tried WSPR 2.0. Received some false results on 30m:
0616 -21 3.2 10.140127 0 <...> JZZ8XZ 22
0630 -22 0.6 10.140131 0 <...> JZZ8XZ 22

Not too bad for the first try at all, I'll again later.

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