googling brought me some exciting DIY PIC 16F628A frequency counters( also LCX meters ) with up to 50MHz measurement. So, my old digital fella decided to leave me totally blind of where I am listening to in the vast electromagnetic spectrum. For passive frequency measurements( just to see that it's in the ballpark) I've so far used an old no name digitally tuned HF receiver (with only 1KHz frequency resolution ) and for almost every other very essential measurements( namely voltage and current) I've gone away with a one hung low DMM. As I make receivers most often, very precise measurement for frequency hasn't been that essential for me( Luck maybe!).
So apart from very rudimentary stuffs, I know almost nothing about coding or micros. DISCLAIMER: My main hobby is RF related ( Mostly HAM radio but without modern gears and I prefer to homebrew as much as possible).
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