This circuit is an add-on unit for radio receivers that lack band-position display. The circuit presented here can show up to nine ba...

This circuit is wealthy in harmonics and is good for testing amplifier circuits. to seek out a fault in an amplifier, connect the planet ...

This FM transmitter circuit uses four radio frequency stages: a VHF oscillator built around transistor BF494 (T1), a preamplifier built ...

Let’s construct a low-power FM transmitter using surface-mount devices (SMD) that will be received with a standard FM radio. Soldering s...

The face that FM receivers operate on pretty high frequencies makes their practical realization somewhat difficult, but most of the proble...

This article should satisfy those who might want to build a low power FM transmitter. It is designed to use an input from another sound s...

Here's a simple VHF FM transmitter that could be used to play audio files from an MP3 player or computer on a standard VHF FM radio...

This is Digital Rf Probe for Vom Circuit Diagram. This probe makes possible relative measurements of Rf voltages to 200 MHz on a 20,000 oh...

If you insist on using a valve radio and listening to medium-wave stations, you have a problem: the existing broadcasters have only a ...

You'll find that this is a very easy project to build. It will transmit good quality sound in the FM band ( 88 - 108 mhz ). One inpor...

The project is a user-friendly and cheap FM radio receiver which produces the desired audio signals using integrated circuit to achieve ...

Receiver interference is hardly an unknown problem among model builders. Preventive measures in the form of ferrite beads fitted to servo...