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| FM Transmitters fm transmitters circuits, ideas and concepts |
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Hi,
I want built a FM transmitter based on this shematic: http://img16.imageshack.us/img16/48/trans001.gif but I don't know how is the valor of C12 and R9 ![]() Can you help me?I want start in FM world's.... Sorry, I'am portuguese ![]() ![]() Thanks |
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C12 is 10 nanoFarads, R9 is not necessary. Actually first stage of that transmitter is not required, it is an audio amplifier for the mike.
You better use this 1 watt fm transmitter circuit with 2n3866 or 2n4427, or check this fm transmitter and fm transmitters sections. |
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Years ago i built a 2 transistor FM transmitter similiar to this one. after trying several transistors for the end stage, i think i got about 4 watt at around of 22 volt instead of 12 volt only. i used a very big heat sink ( 20 cm x 20 cm square ) for the high frequency output power transistor. I possitioned it at the roof of our 9 floor high apartment with self a made 80cm vertical teleskopic dipole antenna. At the end i could listen my radios antenna about 5km in open area.
Good luck to everyone experiencing in this field. |
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| 2n3866, 2n3866 transmitter, fm transmitter |
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