Special article, Part 2
Building an SHF Discone antenna
I again challenged myself to build a Discone antenna for on-air use in the SHF (Super High Frequency) band in the near future.
Report from Thailand
Inmemoriam to the former RAST President Mayuree Chotikul, HS1YL,
US FCC Amateur Radio License Examination in Thailand, etc.
We would like to express our deepest condolence of Mrs Mayuree Chotikul, HS1YL’s passing on 18th July 2022, aged 81.
From Steve's Workbench
Small wonder: The Evolution of the uSDX and other QRP transceivers
There was vigorous competition between manufacturers in recent decades to introduce amateur HF transceivers, with new models appearing almost monthly.
Making an “ON AIR” lamp using LM358
The lamp will detect the emission of radio waves you transmit and turn ON only when radio waves are being emitted.
Technical Trivia by Dr. FB
Experiments on divider circuits using a 74HC74
The 74HC74 is a CMOS logic IC that contains two D-type flip-flops in one package.
FB NEWS Worldwide September 2022View Back issues