rinioth: (radio)
[personal profile] rinioth
My most recent construction project was the result of getting distracted from a distraction.

As a result I needed to be able to measure the, undesirable, common mode RF currents flowing on the outside of the coaxial feeder to my antennas.

I ended up building the meter described in:

http://www.ifwtech.co.uk/g3sek/clamp-on/clamp-on.htm

Here is the end result, in use you pass the antenna cable through the ferrite ring and the meter reads the magnitude of any current flowing on the outside of the cable.

RF Ammeter

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Colin

September 2017

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