Radio Receivers: FM Radio USB Receiver and Transmitters

An excellent Stereo FM Transmitter which operates through the USB port of essentially any computer. FCC Compliant!

The most powerful circuit we've seen that operates on such low voltage (just two AA cells). A range of 100 meters can be expected and, given a good antenna and FM receiver, 500 meters can be expected. An external power supply can be used up to 9 volts. Tr

Schematic, circuit design and comprehensive details about a SUPRX FM radio receiver, featuring high sensitivity and very low noise and distortion. [PDF]

Training course of 56 pages is divided into 9 lessons; Audio Amplifier, AM Detector, AM IF, AM Amplifier, Amplifier, AM Mixer & Oscillator, FM Detector, 1st FM IF, 2nd FM IF, FM RF Stages. Superheterodyne receiver of standard AM (amplitude modulated) and

Aircraft radio receiver circuit that receives aircraft radio signals in the 220-400 MHz band. This kit is small and simple to build, and it's a lot of fun to listen to aircrafts!

FM Radio Receiver Box Kit with Auto-Scan Function.

This PCI-Slot Stereo FM Transmitter broadcasts MP3's and steams on the FM band from your PC. It is controlled via software and will broadcast anywhere on the FM band. Plugs into PCI - FM Transmitter

This is a circuit that will broadcast CD quality sound to you FM Walkman, home stereo or automobile radio. It produces a strong signal that will generally cover the average home and yard. It is stable enough to use even with a digitally tuned FM receivers

Our PCI-Max 2004 is a Stereo PCI FM Transmitter that broadcasts MP3's and steams on FM from your PC (PCI slot). It is controlled via software and will broadcast anywhere on the FM band.

Sound turns on the transmitter, which operates in the FM radio band. A neat way to catch a thief in another room or garage. The volume of sound needed to trigger the circuit is adjustable. The two stage transmitter has good range and the circuit powers do

The most powerful circuit we've seen that operates on such low voltage (just two AA cells). A range of 100 meters can be expected and, given a good antenna and FM receiver, 500 meters can be expected. An external power supply can be used up to 9 volts. Tr

This 3-transistor radio receiver circuit is capable of receiving radio signals in the 5-15 MHz Shortwave band, and apparently costs on $10 to build.

FM microphone kit. Build an actual FM station that transmits over 100ft. Learn about microphones, RF oscillators, and how FM radio works.

Circuit diagram for an AM radio antenna preamplifier that amplifiers the signal before it get to the AM receiver, thus making the AM radio signals stronger for better reception.

Interesting, hand-drawn schematic for a PLL FM Stereo Transmitter, with approximately 5 Watts RF output power.

Harry Lythall shares his v7b FM transmitter circuit design. The transmitter outputs 150-300 milliWatts of RF power in the 88-108 MHz band.

This is a complete AM radio for the standard broadcast band, most of which is on a single IC. Other components, such as coils and variable capacitor to make a finished radio are included. The IC is the RF Amp, detector and AGC circuitry. The IC's output d

The Veronica 1 Watt PLL FM Transmitter is a pretty decent broadcast PLL exciter or transmitter that can be used alone or with an RF power amplifier for high power radio broadcast.

This 150 Watt FM RF Amplifier will increase the output of your FM transmitter from about 1 Watt to 150 Watts.

This 40 Watt FM RF Amplifier will increase the output of your FM transmitter from about 1 Watt to 40 Watts.

This 300 Watt FM RF Amplifier will increase the output of your FM transmitter from about 1 Watt to 300 Watts.