I'm in the opening stages of a project, part of which is building an FM Radio transmitter. I am using the circuit found here (call it site1), which is the original of the circuit found here (site2). On site2 is a method of making the inductors required (5 turn air coil, 4mm inner diameter with 28AWG enamel coated copper wire). I didn't have 28AWG so attempted to use 24AWG wire. Then, to find the frequency I was transmitting at, I attempted to find the value of the inductors. Putting the inductor in series with a resistor and an AC signal generator, I could not find, at any frequency/current/voltage, any voltage across the inductor; It essentially seemed to be acting as a normal piece of wire. I know my measuring equipment is not faulty; I've tested it all. I've used up to 2A (The max I could find on any of the equipment in my University Lab), added turns and even put a very powerful magnet on the inside of the coil to no avail. Can anyone see a reason for this not to work? Appreciation in advanced.