MICROFORUM

Posted: **Wed Jul 19, 2023 8:18 pm**

I have an old FM receiver and would like to upgrade it with a digital frequency meter. I want to know where to connect the input of the frequency meter. Attached you will find the wiring diagram of the FM receiver.

: FM receiver oscillator; FM receiver osc.jpg (81.92 KiB) Viewed 1936 times

Posted: **Fri Jul 28, 2023 9:26 pm**

Do you have an oscilloscope with a frequency higher than 100MHz? You will need this. Try with a probe to read the signal at the transistor collector Q2. You need a probe with high input resistance.

MICROFORUM

FM osc frequency

FM osc frequency

Re: FM osc frequency