audioguru i think my regulator oscillates... firstly i tried an adjustable and it was also oscillating now i'm using reg101-33. At the input there is one 100nF and 100uF at the output. i wasn't able to locate the frequency on the radio so i'm getting harmonics and i hear a high pitch sound...the voltage on the regulated rail is 1,65V it's lower than it should, at first i thought it is voltage drop because of the load but you can't hear your voice on the radio... the electret mic doesn't do anything unless you hit it or blow hard on it
i have changed your resistor values on the oscillator from 47k to 22k and 10k to 4,7k so it can be able to work on 3.3V.
help?