Remote Field Strength Meter Circuit

Posted on Apr 1, 2013

This field strength meter consists of a tuned crystal detector producing a dc output voltage from a transmitted signal. The dc voltage is used to shift the frequency of a transmitter of 100-mW power operating at 1650 kHz. The frequency shift is proportional to the received field strength.

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

This unit has a range of several hundred feet and is operated under FCC part 15 rules (100-mW max power into a 2-m-iong antenna between 510 and 1705 kHz).

Leave Comment

characters left:

Related Circuits

  • New Circuits



    Popular Circuits

    Computer Serial Port interface
    Four-Input Minimum Maximum Selector Circuit
    Electric Guitar Preamp Mixer and Line Driver
    Testing a EM-406A GPS module
    Electronic Dice
    60 Light Sequencer using a Matrix
    4 channel dimmer
    Low-Power Car/Bike USB Charger
    Railroad Signal Driver
    Servocore 2-motor walker circuit