simple long range fm transmitter circuit

IC BA1404 For Stereo FM Transmitter circuit

The following circuit illustrates the IC BA1404 used in a stereo FM transmitter circuit diagram. Features include ease of construction, making it accessible for anyone to build. The BA1404 is a versatile integrated circuit designed specifically for FM transmission applications. It...

76MHz to 119MHz Fm transmitter

TR1 (BC547) is an inverted Hartley oscillator which based upon an inductor fabricated on the PCB. This makes it megga-stable, and setable anywhere in the VHF FM band (76MHz to 119MHz) and the BB105 varicap makes it voltage tuneable over...

RF Actuated Keying Monitor

Sending Morse on a rig without a sidetone is not impossible, but is not particularly pleasant either. This battery-powered monitor has been designed to provide an audible indication of keying for those whose rigs lack a CW sidetone. Its sensor...

FM Transmitter Circuit Type Versatile

This is a design circuit diagram of a versatile FM transmitter. This circuit does not include a coil and is simple and easy to assemble. It operates based on gate logic concepts. The circuit features a buffer gate N1 that...

FM transmitter overvoltage protection circuit

The FM302E-I-type FM transmitter exciter is manufactured by NEC Corporation, Japan, and features a 1210 motherboard. It utilizes direct frequency modulation of the carrier signal, employing phase-locked frequency stabilization and frequency synthesis techniques. The front power amplifier is based on...

Simple RF Power Meter

Many beginners trying out their skill with QRP TX for the first time have to overcome many problems before they are able to come on the air. One usual complaint is that everything is working fine, but the signal is...

Wireless Car AlarmCircuit With 2N3904 Transistor

The following circuit illustrates a Wireless Car Alarm Circuit Schematic Diagram. Features include the ability to detect sounds within a 20-meter radius, a 1/16 wavelength antenna, and the capability to transmit radio signals up to 2 kilometers. Q1 serves as...

4 Watt FM transmitter

This is a small but quite powerful FM transmitter having three RF stages incorporating an audio preamplifier for better modulation. It has an output power of 4 Watts and works off 12-18 VDC which makes it easily portable. It is...

fm tracking transmitter circuit

This design outlines a tracking transmitter for audio tones operating in the FM band frequency. The circuit can function as either a signal transmitter or a remote control transmitter and utilizes only readily available components. It has a transmission range...