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Circuit Archives
Radio/ Transmitters
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Simple FM Transmitter
Reprinted with permission
from Rudolf Graf.
For this and over 1000 other electronic circuits, review and order Rudolf
Graf's Encyclopedia of Electronic Circuits on CD-ROM Vol-1
McGraw-Hill ISBN0078528119
FE106-5 |
Description: Simple FM Transmitter
Running from a 9-V
battery, this transmitter cam be used as a wireless microphone with an ordinary 88- to
108-MHz FM broadcast receiver. Keep the antenna length under 12 inches to comply with FCC
limits. L1 is 6 turns of #24 wire wound around a pencil or a 1/4" form, with turns
spaced 1 wire diameter. C6 is a gimmick capacitor of about 1 pF. (Reprinted with
permission from Radio-Electronics, 11/91, p.85. Copyright Gernsback Publications, Inc.,
1991.) From figure FE106-5 of
Encyclopedia of Electronic Circuits on CD-ROM Vol. 1.
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