Someday …

I’ve made some progress on my 5 tubes shortwave radio.

The frequency counter prototype is working.

I’m using a MPF102 as an RF amp, then the signal is feed in a 74HC161 (16x prescaler) and finally into an atmega328p for counting.

For a video goto:

[youtube=http://www.youtube.com/watch?v=Wd0NOFe4joQ]

Project 4 – Homemade SW vacuum tubes receiver