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.

The results from my Home Brew DDS Multimode test on 28MHz using 300mW have been truly amazing. The time has come for it to be switched off shortly. Many thanks for all those who looked just below the WSPR band for my signal and particularly for the Visual Mode Screen Grabs.

Next test in the future may be with approximately 50mW as 28MHz opens up.

Is active with the new temorizzazione beacon IQ4DJ a 10140Khz (Radio Club Carpi) only transmission.

T1 = 1W : T2 = off : T3 = off : T4 = 50mW :T5 = off: T6 = 1W :T7 = off: T8 = off : T9 = 1W : T10 = off

TX HOME MADE
VERTICAL ANTENNA
GENERATOR WSPR (MP3 Player )
HOME MADE MP3 Logic Control, Logic quartz timer and clock synchronization radiocontrollato (DCF 77.5KHZ).
NO PC
BEACON 24H NO STOP

The beacon is activated IQ4AX a 10140Khz (Radio Club Modena) only received
RX HOME MADE
VERTICAL ANTENNA
Upload spots 24H NO STOP

06-18-09
In my first blog, I discussed getting my WSPR station receiver system working. In this installment, I'll describe the work I've done on a stand-alone WSPR transmitter.

Thanks to Andy G4JNT, I began working on the MJB stand-alone beacon controller designed by Johan Bodin SM6LKM. I implemented the schematic pretty much as shown. I had a small board with a RS-232 to TTL converter on it, a MAX236, so that's where I started. I wired in the PIC 16F628, the DDS-30 board from AmPRO and a hex-inverter for the I2C Clock, Data and Chip select lines. I wasn't sure I needed them, so I tried it both ways, but he definitely inverts the signals in his software so the inverter is necessary. I didn't have a 74HC14 that he recommended so I used a 74LS04 which worked fine. The pin-out is different but he didn't show it so that was an easy change.

06-18-09
I recently joined into the WSPR throng and wanted to share my experiences in making it all work. This was a very challenging project to me, harder than it should have been. I have been a ham for almost 30 years, I am an Electrical Engineer and have been an electronics hobbiest for over 50 years. However, in my older years, the ADD has really set in and I don't comprehend all I read as well as I should so most of the problems are my own and might not affect you at all.

To begin with, I downloaded the WSPR V1.11 software for my PC, installed it and connected my Sony ICFW-7600G Shortwave receiver through its earphone output to the microphone input of my PC. Tuning to 10.1402MHz proved very difficult. The Sony only has 1 kHz tuning digitally and a BFO knob for fine tuning. There is a USB/LSB switch, but it doesn't really give you good USB/LSB selection. The BFO is the thing. I don't own a regular ham receiver so the Sony was it.

Have just used WSPR for the first time. And am quite amazed on the first night of reporting.

Using Just 1Watt I received a report from VK, wow!

I can see this as a great tool for seeing how my signals propogate on the various bands on the Doublet antenna I am using.
The Doublet is about 102ft Long 30ft up at the apex and has the last couple of metres of one leg drooping down to fit it in the garden/backyard.

I would like to see how the reports look when overlaid on an EZNEC modelled antenna to see if the signals coincide with the main lobes of the antenna.

First of all, I want to apologize for not being able to put in the time to keep up with the various administration tasks to keep this a first-class site. As you all probably know, the spam bots found the site a few weeks ago and posted hundreds of bogus messages to the forum, and one was even posting on the chat room.

I cleaned that up today, and I also changed the site to only allow new accounts after administrator approval. This may lengthen the time to register and be active on the site by a bit, but it lets us get the bogus registrations back under control.

thanks for the reports, very exciting.

Brian VK5BC

just another NEWBIE coming in...

ASSETS AND THE BEACON IQ4DJ A 10140KHZ CARPI CLUB OF RADIO TRANSMISSION ONLY
TX HOME MADE SO BY SEQUENTIAL 1W E 50mW.
VERTICAL ANTENNA
GENERATOR WSPR (MP3)
HOME MADE Logic Control MP3
HOME MADE Logic quartz timing.
HOME MADE Sync timer with clock radiocontrollato (DCF 77.5KHZ).
NO PC
BEACON 24H NO STOP

ASSETS AND THE BEACON IQ4AX A 10140KHZ RADIO CLUB OF MODENA ONLY RECEIPT
RX HOME MADE
VERTICAL ANTENNA
INFO
http://www.arimodena.it/wspr

test

As you will see by the database VK3OT/SIX and VK5PJ have ben conducting experiments on the 6M band over 450 km from Adelaide PF95 and Hamilton QF12.
For those who dont know the path is not line of sight. it is over flat ground desert for hundreds of KM with a slight rise at each end. I am 800 feet AMSL and VK5PJ about 250 feet.
He is running 1 watt to a 9 el M2 yagi. I am listening on an identical antenna (from same batch in 1989) and using a TS690SAT as VK3OT and an FTV1000/FT1000MP with 2ppm osc as VK3SIX.

In addition to my MEPT on 10.140073MHz which has 8 Unit, QRSS, Hell and WSPR modulation and a Power Out of 37mW. I have been running a DDS controlled MEPT which can virtually go anywhere, 1.8 to 50MHz.

Currently this TX is just below the 28MHz WSPR Window on 28.125995MHz, Power Out 300mW. It uses 5 Unit modulation to produce QRSS, Hell and WSPR. Even the better commercial rigs can easily be almost 100Hz out on the dial reading, consequently I am decoded by some stations as I appear in their passband and missed by others who are out in the other direction.

Several times in the last couple of weeks, when I have left WSPR running overnight, it has shut itself down during the night. The computer is still running, Spectran is still running, but WSPR has stopped.

I'm wondering if anyone else has noticed this happening.

test

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