Hi. Jim -KX4TD - have used a WSPR Desktop transmitter to investigate the propagation on the 40m band. His explanation on what is going...

After a long development time I have now released my latest WSPR transmitter that is intended to be flown with small balloons. There is a...

Jean-Marie Polard - F5VLB has been experimenting with so called "earth probes" to transmit RF on our amateur bands. He mentioned it to me...

Carl - WM3E have done a nice write up of how he travels the US in his motor home with his wife. Like so many of us that comes in and out...

One of my Customers -Rob Wagner VK3BVW - have done a Video review of my WSPR Desktop product. Watch it here https://youtu.be/AXmzQP0VwZ4...

I have just finished a new revision of the WSPR Desktop. The new revision use a different GPS module as I had beginning to experience...

One of the WSPR Desktop transmitters have found its way to East Africa running continuously as a WSPR beacon in Tanzania. André ...

Hayden - VK7HH have built a 6m WSPR beacon using a WSPR TX_LP1 and have done a really good job putting it together in a high power...

Today I played around a bit with an amplitude modulated 10mW 400THz WSPR transmitter and receiver. It all started with an email from ...

WSPR is a great way to explore and test a wide range of stuff in our wonderful radio hobby. Although I guess most of us use WSPR casually...

I have now completed construction, testing and build of my latest WSPR Transmitter. I call it the WSPR Mini! It is only 41x56mm in size...

YouTuber Kevin Loughin did a great review of the WSPR-TX-LP1 transmitter with the add-on card Mezaninne LP4. As Kevin is a Linux only...

Hi all. Forums! I now have a Forum for discussions and support. You need to login to members page to access it. It is open for everyone,...

The Mezzanine LP4 is a new add-on that expands the WSPR-TX_LP1 transmitter to four bands or more (US users can use more bands with...

I just released my latest WSPR product. It has been a very long journey to complete this one but it is finally here. The Product is...

Peter Parker (Amateur call sign VK3YE) did another review, this time it's my WSPR receiver he takes a look at. In the Video he goes over...

Paul Karlstrand with radio amateur call sign VK3KHZ in Australia was one of my early customers of the WSPR-TX_LP1 transmitter. He...

Peter Parker (Amateur call sign VK3EY) in Australia tested my newly released WSPR transmitter. Check out his review here:...

I have written a documentation page for the WSPR Transmitter WSPR-TX_LP1 and and tried to make it as complete as can be at this time. ...

I spent the yesterday to document the WSPR-RX and put the source code on Github. You will find the documentation here