This is 1 Watt FM amplifier with a good design that can be used to amplify RF signal of low power FM Transmitters 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 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 maximum output power of 0.4W.

     Bench Lab Power Supply 0-50V 0-5A
     Super Simple FM Transmitter
     FM Transmitter with 2N2218
     A Wide Dynamic Range Field Strength Meter
     SAA1057 PLL Synthesized FM Transmitter
     USB Mono FM Transmitter
     300mW FM Transmitter
     Simple Audio FM Transmitter
     2-5 Km Long Range FM Transmitter
     Single Chip FM Transmitter

Circuit-Zone.com © 2007-2023. All Rights Reserved.