symmetrical antenna current indicator

Device to monitor transmitter antenna current in an open feeder line to an antenna. Amount of antenna current is indicated by five rows of LED's in ascending order. The higher the antenna current, the more rows are lighting up. A sample of the antenna current is derived by a ferrite current transformer. by choosing the correct number of secondary windings, the monitor can be scaled for antenna currents from 25W to 2 kW.




Mar 06,2020
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