Another RF Field Strength Meter


Posted on Feb 4, 2014

This circuit is another radio frequency (rf) field strength meter, similar with our previous field strength meter circuit, but with lower supply voltage (only a single cell 1. 5V battery). Here is the schematic diagram of this rf strength meter circuit: To use, turn on transmitter and meter; adjust C1 for peak reading. Turn off transmitter and adju


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

st R1 for a perfect zero reading on the meter. Turn on transmitter (with no audio modulation) and go to your monitor point(s) and take readings. Your monitor point(s) should be many meters/yards away from your antenna, but obviously must be where the signal is still strong enough to register on your instrument. After taking a set of readings, you can experiment with your antenna or transmitter system, then take another set of readings and determine whether your signal strength was increased or diminished. Keep your readings in your engineering logbook. Make note of whether it`s been dry or rainy in recent days; moist soil might give slightly better propagation.




Leave Comment

characters left:

Related Circuits

  • New Circuits

    .

     


    Popular Circuits

    CDV700 Geiger Counter
    Negative Ions Detector / Sensor
    Ultrasonic switch circuit
    Remote control for lamp or appliance
    Temperature-to-frequency converter
    Digital Sawtooth Generator
    Active AM Radio Antenna Amplifier / Preamplifier Circuit
    filter Strange behavior from variable-gain amplifier
    25 Watt Audio Amplifier Circuit
    usb only sc1
    interfacing large load bank with
    Water Level Indicator With 7-Segment Display PCB
    200 solar charged remote control lawn mower
    TDA1562Q Audio Amplifier Circuit
    Electrical Live Wire Detector



    Top