Posted on Thursday, May 15, 2014 • Category: FM Transmitters
This is a 1 Watt FM Transmitter amplifier with a good design that can be used to amplify a RF signal in the 88 – 108 MHz band. It is very sensitive if you use good RF power amplifier transistors, trimmers and coils. It has a power amplification factor of 9 to 12 dB (9 to 15 times). At an input power of 0.1W the output will be 1W. You must choose T1 transistor depending on applied voltage. If you have a 12V power supply then use transistors like: 2N4427, KT920A, KT934A, KT904, BLX65, 2SC1970, BLY87. At 18 to 24V power supply you must use transistors like: 2N3866, 2N3553, KT922A, BLY91, BLX92A. You may use 2N2219 at 12V but you will get an output power of 0.4W maximum. RF Field Strength Meter with Attenuator up to 200 MHz Simple FM Radio Bug 1 Watt FM Amplifier 1.5V Spy FM Transmitter Bug BLF147 150W VHF Amplifier 1.5V Tracking Transmitter VHF/UHF TV Modulator 27MHz Walkie Talkie BH1417 PLL Stereo FM Transmitter 1W PLL Transmitter with MC145152
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