Duplexer Plots

Plots from the setting up of the Duplexer for GB7CW
plot1  Marker 1 M1 430.400MHz Marker 2 M2 439.400 MHz Showing the isolation through the duplexer. plot2  Showing pass at 430.400 MHz (Note attenuation of M2 439.400 MHz.) plot3  Showing pass at 439.400 MHz (Note attenuation of M1 430.400 MHz.)
plot4  Through pre amp and internal filter of pre-amp no DC Power on. plot5  Through pre amp and internal filter of pre-amp ON  (Note the rejection of Marker 2 obtained from internal filter tuning). plot6  Through circulator.