Bumped on an interesting article the other day: a cheap power amplifier with two MRF300AN LDmosfets from NXP.
The MRF300 produces about 300 watts @ 50V and operates broadband from 1.8 – 250 MHz. Razvan M0HZH created a little power amplifier with two of these mosfets which put out around 600 watt with 4.5 watt of drive power.
This is a really nice project which is going on my to-do list!
https://youtube.com/watch?v=inJG9TMeMsM%3Fversion%3D3%26rel%3D1%26fs%3D1%26autohide%3D2%26showsearch%3D0%26showinfo%3D1%26iv_load_policy%3D1%26wmode%3Dtransparent
A non-contact thermometer is a pretty common tool these days, and one that most of us probably have kicking around the lab. You can grab them online for as little as $10 USD, and while they’re nowhere near as capable as a thermal camera, they certainly have their uses. But even with their increased availability,…
via A Stylish Low Part Count Non-Contact Thermometer — Hackaday
Remco PA3FYM is a big inspiration of many of my projects. This time he convinced me to build the famous FYM-delta-loop as a holiday antenna. Actually it’s a quite simple design from 2015 of the well known delta-loop. In Remco’s design of the FYM-delta-loop it is tuned for 40 meters. Not accidental because during the summer every night there Continue reading
