Ham radio blog by OZ1BXM

I went to Copenhagen last weekend together with my wife to visit our daughter and her husband. As my daughter lives near Copenhagen Zoo, it ...

This month I'll mention my journey to USA to visit my sister, who lives there. I also visited Kennedy Space Center's visitor complex...

Since last time, I have performed the SSPA smoke test. I adjusted the bias of the LDMOS transistor and set it to 3.5 A drain current at 48 V...

If you want to explore more details of the amplifier project, I recommend an article by W6PQL: "Solid state 1 kW Linear Amplifier for 2...

The primary advantage of watercooling is its ability to transport heat away from the source (a transistor) to a secondary cooling surface (a...

Building a Solid State Power Amplifier (SSPA) is my project this winter. I have chosen the 1 kW SSPA for 144 MHz as described by F1JRD in DU...

It is Winter in Denmark right now. We had a lot of snow this December. As you can see in the picture below, our small garden is totally whit...