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  1. A

    FM Radio

    The cathode side of D1 is connected to +5V through L2 as it should be or is this already modified?
  2. A

    Audioguru FM Tx

    "If you need more power, use my last circuit but with 2N4401's instead of 2N3904's. It can handle a bit more power. Current will go up to around 84mA and RF power just over 100mW. Just remember that this power can get you into trouble in most countries and the 2nd harmonic, although still 30dB...
  3. A

    Audioguru FM Tx

    edit: There is another posting on the same topic:- Also it will draw around 53mA at 10mW and about 55mA at 20mW (black trace) so one of these small 9V batteries won't last very long. If you plan to use it on a power supply make sure it is well regulated. And for those interested, the final...
  4. A

    Audioguru FM Tx

    Guys, found this on another board. Looks like some analysis and mod of Audioguru transmitter. I attach the file posted there. "Here is a little simulation I did for a friend on the RF section of this transmitter after he complained of some TV interference after building this. Basically I...
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