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300mW FM Transmitter
Posted on Wednesday, February 1, 2012   •   Category: FM Transmitters

300mW FM Transmitter

Here's a long range 300mW FM Transmitter for the 88MHz to 108MHz band. This particular TX is of special interest to those wishing to build low power Power Amplifiers for the VHF bands since it used impedance matching, power amplifier and antenna filtering, all of which should be used by radio constructors, whether it be for amateur radio or any other form of radio. The features of this project are: Higher output power - 150mW min (at 9v) and 300mW+ (at 12.5v). Very pure output signal due to careful design and filtering. VARICAP modulation - possibility to add a synthesizer. Single sided Printed Circuit Board, only 40mm x 72mm. Covers the domestic FM band - 88MHz to 108MHz. Easy to build, but coil winding experience IS required

     BF494 Micro FM Transmitter
     BA1404 HI-FI Stereo FM Transmitter
     Simple Coil Less FM Transmitter
     FM Stereo Transmitter using BA1404
     BA1404 Transmitter with UPC1651RF Amplifier
     4W PLL FM Transmitter
     FM Transmitter with Varactor Diode Tuning
     Stereo FM Transmitter with BA1404
     1W PLL Transmitter with MC145152
     A Wide Dynamic Range Field Strength Meter
300mW FM Transmitter

 

Build Accurate LC Meter and start making your own coils and inductors. This LC Meter allows to measure incredibly small inductances making it perfect tool for making all types of RF coils. LC Meter can measure inductances starting from 10nH - 1000nH, 1uH - 1000uH, 1mH - 100mH and capacitances from 0.1pF up to 900nF. The circuit includes an auto ranging and reset function to make sure the readings are as accurate as possible ... [more]



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