[mircemk] had previously built a frequency counter using an Arduino, with a useful range up to 6 MHz. Now, they’ve implemented a new design on a far more powerful STM32 chip that boosts the ...

Somehow [hvde] wound up with a CB radio that does AM and SSB on the 11 meter band. The problem was ... The answer? An Arduino and a few other choice pieces of circuitry. In particular, [hvde ...