Field Strength Meter

Posted on Mar 5, 2013

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. This circuit measures radio field strength by converting the signal to DC and amplifying it. This field strength meter was designed for VHF frequencies in the range 80 -110 MHz.The inductor L1 is 4 to 6 turns of 20swg wire air spaced wound on a quarter inch former or similar.

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

Leave Comment

characters left:

New Circuits



Popular Circuits

60W Guitar Amplifier
Trainwreck Blues tube amplifier for Guitars
Charger circuit V
Get Negative Rail With Cmos Gates
3 LED battery monitor circuit
RMS Reading Voltmeter
Dancing Robots
AM circuit by MC1496