From Steve's Workbench
Cheap but effective satellite antennas
Part 2: Directional antennasThis month we look at two types of directional antennas that are cheap, fun to build, and very effective for satellite work.
Report from Thailand
Easing of Travel Restrictions for Visitors Entering Thailand,
Tribute to Franz Langner, DJ9ZB and Roger Western, G3SXWThailand has eased the travel restrictions for travelers visiting Thailand.
Technical Trivia by Dr. FB
Consideration of using a photocoupler as a voltage-variable resistor
When you want to automatically vary the amplification using an Arduino or similar device, it is very convenient to have a component whose resistance value changes with changes in voltage.
Enjoying electronics project
Battery isolator
It is convenient for your mobile operations.When operating a radio on a mobile system, it is often necessary to get DC power from a vehicle battery.
FB NEWS Worldwide June 2022
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