Radio Amplifiers Circuits


Posted on Feb 5, 2014

This is a 1 watt fm 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. This is a 2 meters 144 Mhz


Radio Amplifiers Circuits
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rf amplifier wich works in push pull and is build with DV28120T Vmos. You can use coils made form RG142 coaxial cable or similar, 620mm long, 5mm diameter, 6 turns with inside diameter 30mm no gaps between. VMOS RF amplifier circuit. 2 meters 144MHz push pull amplifier wich can generate 200W, how does it sound Sounds delicious with 2 DV28120T transistors. DV28120T push pull amplifier circuit. The 10 meters 27MHz CW radio amplifier is equiped with VN66AF transistor produced by Siliconix wich has some advantages: its cheap, great dielectric insulation and high gain. Here we use VN66AF as an rf amplifier for 10m band (26 30 MHz ). With this 27MHz rf amplifier, small transmitters ~ 200mW, can be transformed in. This fm 88-108 Mhz radio amplifier is equiped with BLF 245 and can be user with a heatsink from a processor and cooler. The BLF 245 Datasheet can be downloaded over here -> blf245-datasheet BLF245 amplifier circuit. One wideband fm power amplifier designed with MRF 171A MosFet transistor. The output rf power is somewhere around 40W, the gains is 20dB ( 100 X ). The input rf power is.




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