Japan Castles On The Air (JACOTA)
Castle 5. Ikeda castle
I decided that I could now take a short trip to a nearby castle to operate from.
Short Break
Overvoltage protection device using LM358: Part 2
This time the circuit that cuts off the power supply line will be changed from a mechanical relay to a MOSFET transistor to make it completely solid state.
Report from Thailand
E2HQ RAST Headquarter 2021, etc.
RAST has once again participated in the IARU HF World Championship 2021 during 10-11th July.
FB LABO
Can the HFJ-350M multi-band whip be used to build a V-dipole?
I'm going to explore how to expand the fun by modifying a commercial multiband whip antenna.
Technical Trivia by Dr. FB
Let’s use MOSFETS
I will explain the switching operation, which is a major feature of MOSFETs.
Topics from Around the World
Review of the Icom IC-705 HF/VHF/UHF Portable Transceiver by Mark M0IAX
Ian Lockyer/2E0IAJ interviewed UK amateur radio operator Mark Bumstead/M0IAX
FB NEWS Worldwide August 2021
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