FM receiver circuit diagrams

The ATL-3 Loop Antenna

This antenna is the result of long term development and user feedback.

2 Transistor Transmitter

A compact 2 transistor transmitter for use at VHF frequencies.

FM Receiver

An FM regenerative receiver using a single FET and one audio amplifier IC

Simple Field Strength Meter

This Field Strength Meter is simple and also quite sensitive. It uses an ordinary digital voltmeter to measure RF signal strength up to a few hundred MHz.

Field Strength Meter

This is a wide band signal strength meter circuit which responds to small changes in RF energy, designed to be used for the VHF spectrum and will respond to AM or FM modulation or just a plain carrier wave.