Field Strength Meter


Posted on Jul 19, 2012

This Field Strength Meter has been specially designed for our FM bugs. It is capable of detecting very low power transmitters and will assist enormously in peaking many of our FM transmitters that have a coil in the output stage that can be adjusted for optimum output.


Field Strength Meter
Click here to download the full size of the above Circuit.

The circuit consists basically of an RF amplifier, diode rectifier and a DC amplifier. The first feature that may be new to you is the inductor in the antenna circuit. You may think it produces a short-circuit between the antenna and earth but the inducta




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

Brightness Control for small Lamps
Panner Waveform Generator
50W Offline Switching Power Supply
Circuit Compact DJ Station
Simple Sixteen Stage Bi-Directional LED Sequencer
audio Smallest circuit to make a sound
Very Simple Oscillator
Telephone Free Indicator
app note high voltage led applications
Amplifier Stages
VFO/BUFFER circuit
Multi-output power supply circuit (MAX1902)
Intelligent Ultrasonic Ranging IC 4Y4 form a monolithic liquid crystal display rangefinder circuit diagram
Discrete components sound and light control stairs delay switch circuit 5



Top