Universele SWR beveiliging
Very simple universal SWR protection. The measuring board can easily be placed behind each output stage up to 1000 watts and is already prepared to install an N or 7/16 chassis part. The mainboard comes between the positive lead to the amplifier and can switch a current of up to 38A. The mainboard requires no external power supply. With a potentiometer the maximum SWR can be adjusted. You can therefore determine how bad the SWR may be before the protection works. An externally 5mm LED and pressure switch for reset are included. The circuit works between 20 and 60 volts, but can easily be modified to operate at 12 volts. See photos for connection details!
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