Field Strength Meter Circuit

This circuit can be used to detect magnetic field strength of radio signal and common radio transmitting signal through antenna.

Field strength meter circuit.

10 2 a is often equipped with a small whip antenna and is called as a field strength meter. A sensitive and reliable rf field strength meter is an invaluable instrument in amateur radio and in radio controlled model area. A field strength meter is used to align an antenna to get the best possible gain to determine the transmitting range of radio controllers. Field strength meter is a must have equipment if you re dealing with radio transmitter electronics.

If you typi cally run the legal limit you may be able to get by with some run of the mill silicon pn diodes. Vhf field strength meter this is a simple and low cost wide band vhf field strength meter. Designed by andy collison. The wavemeter circuit with a rectifier meter indicator as shown in fig.

Field strength meter fsm by mixing recent and legacy technology. Using this fs meter one can quickly determine whether the problem lies on the transmitter or the receiver module. This simple circuit measures the strength of a radiated signal from a transmitter. The circuit is essentially some sort of a am receiver it self.

The field strength meter circuit is used to measure the radiation intensity from a transmitting antenna at a given location. An optional amplifier can be inserted after the rectification so it can be used to boost small signal. This article describes a portable 90 db dynamic range rf fsm that is simple to build. H ere is a handy field strength meter that can be used to check the strength of am radio signals the circuit is a very useful for those who assemble radio transmitters especially in the tuning of the final stage for maximum range.

Field strength meter here is a handy field strength meter that can be used to check the strength of am radio signals. Field strength meter sensitivity is largely determined by the diodes. It is commonly used by model airplane builders to check whether their transmitter are really transmitting the radio signal. In comparison to the traditional basic diode detector type fsm this minimal component count instrument can be used to measure field strengths over a much wider dynamic range and with much.

Schottky and germanium diodes are used for their low forward voltage 0 2 v to 0 4 v and fast switching speed. With its own small antenna it is essentially a simple receiver with an indicator. D1 and d2 act as both rectifier and voltage doubler. Here is one example of this kind of circuit that works for 2 4 ghz band.