Rf current meter

This kit provides you with a simple but effective means of measuring the current in antenna wires, and of looking for braid currents on coax feeders. Clamp-on RF Current Meter. The most useful tool for RF interference troubleshooting! It takes a special meter to measure current accurately in the presence of strong electric fields, and to not disturb low-capacitance high impedance systems.

The MFJ-8RF Current Meter reads true RF current. It can accurately measure actual RF currents flowing in antenna elements, radials, ground wires and on the outside. Stop Guessing and Built This Simple Meter Making Measurements Easy to Take.

Why a Hand Held RF Current Meter. There are two things that I wanted to do which would be. RF RF Current Meter Version 3. As a matter on interest, this is more or less the system used by the electricity supply companies for reading currents in cables carrying high voltages. Do It Yourself and Buy Tools from Amazon. Free UK Delivery on Eligible Orders!

Calibrated clamp-on RF current meter accurately measures RF current in antenna elements, ground wires, coax shield. Non-metallic case minimizes field disturbance for accurate reading. It needs a tweak, but this is more or less it. A decade resistance box and your multimeter on the current position in series with a low current supply will allow you to determine the full scale value of the RF Ammeter basic movement.

It is often useful to be able take measurements of RF current in the antenna system and the primary need that I had was to confirm the balanced RF. Slips over mobile whip to tune for maximum current. You will also find several circuits for RF current sensors on the Internet. They are relatively easy to build.

Find great deals on eBay for rf current meter. My studies indicate one should measure the far field. How this works: The incoming RF current is rectified by the Schottky diodes and is converted to pulsating DC. DC passes through the meter shunt.

Depending on the RF conductor. The meter range switch selects between full scale readings of 1. This project allows the measurement of rf current either via single inline connectors or via bnc connectors on the top of the unit. A meter shorting position (OFF) is also provided for transport. I have also included a three way rotary switch current selection for better viewable metering resolution. In all cases, connect the RF probe between the circuit under test and the meter.

The circuit under test could be a transmitter, RF oscillator or other signal source. As the OAdiode and 10n capacitor are a half wave rectifier, the RF value measured will be a peak value. A simple RF clamp meter By Mike, G8CKT Most of us have a means of measuring RF voltage but if you’ve never experienced the joys of owning a meter that can reliably indicate RF current then you are definitely missing out.

The problem, of course, is that. When purchasing a used meter , note whether the scale is appropriate to the current range you expect to use.