SWR bridge circuit
By default, the installer places the schematics and PCB layouts in:
    C:\Program files\G3VPX\Calswr\hardware\
Please view and print the swrbridge_schematic.pdf file to accompany the following circuit description.
This circuit uses an FT50-43 toroid as a current transformer.
It is the circuit currently used in my PicAStar ..... but you dont have to use it.
Picswr should work with other SWR bridge designs.
Please note the guidance on tailoring the Picswr module to the maximum output voltage of your bridge.
The Calswr program can provide a linear-watts calibration in profile for your bridge.
I used twin screened microphone cable to connect the bridge to the Picswr module.