What does it mean 8 turns of 22 gauge wire around non-conductive 1/4"diameter form?

[duckling]

What does it mean 8 turns of 22 gauge wire around non-conductive 1/4"diameter form?

What does it mean by 8 turns of 22 gauge wire around non-conductive 1/4"diameter form? I never use this before?How to calculate the exact value for the inductance? Is it equal to 0.1uH? Can i buy for a readymake inductor?

Can my attached circuit works to transmit an audio input (microphone) to a radio as the receiver??

Need help..thanks

 

[Khabree]

Re: FM transmitter2

It means: Take a pensil (round) or any thing else whose diameter is 0.25 inch and wind 8 turns of #22 guage wire (SWG I guess), on it, then remove the thing (pensil etc) and you have your required coil.