Transmitter Circuits: PLL FM Radio Transmitters and Receivers

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.

Schematics / circuit diagrams for a PLL 1 Watt FM radio transmitter that is enclosed in a casing. Oscillator, PLL circuits.

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

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

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.

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

Very small Hi-Fi Stereo FM Transmitter circuit that uses only 1 chip (BA-1404), and is very easy to construct. Operates from 1.5-3 Volts DC (just 1 or 2 AA batteries).

Assembled Version: The FM PLL+ is an extremely high specification PLL transmitter / exciter. The specifications of this unit exceed some of the best brands in the businees, including those costing thousands elsewhere.

Kit Version: The FM PLL+ is an extremely high specification PLL transmitter / exciter. The specifications of this unit exceed some of the best brands in the businees, including those costing thousands elsewhere.

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