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

I have just released my new product, the High stability 10GHz LNB (PARI-O) This product solves the problem of drift in 10GHz LNBs and down-converters. It is ...

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 big world wide comm...

This Christmas holiday I took a break from building and designing electronics. Although I was suffering a bit from burn-out from working day and night with m...

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

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 of this hobby he has...

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

You can now listen to the geostationary radio amateur satellite Oscar 100 from a web browser. The receiver is using my latest product PARI-O (Power And Refer...

My FT-857 developed a fault the other month, it does not give any power out on transmit on SBB and AM, FM works fine though so the PA is good. The receive s...

It is now one year since I started my ZachTek venture, I cant believe how fast the time have gone! Time flies when you are having fun as the saying goes. Thi...

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 problem sourcing the u-...

One of the WSPR Desktop transmitters have found its way to East Africa running continuously as a WSPR beacon in Tanzania. André OE8ASR/5H7MP is the operat...

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 polished unit. It look rea...

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

Hi all. I just released the firmware and configuration software version 0.75. They have improvements in the following areas: - Improved responsiveness from t...

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 with no real intent...

I recently found an error on my PCB used for the WSPR-TX-LP1 transmitter. The error affects the unpopulated low pass filter. What boards have the error? This...

Yesterday I took a break from building electronics and did a YouTube video. It's the first one and hopefully I will find the time to continue doing more. Thi...

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 (1.6 x 2.2 inches) a...

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 guy he could not run t...