Hello Howard,

I have completed my system, it is not picking up transponder. On my terminal screen there is nothing happening and led on decoder is not flashing when transponder passing under loop.

i have measured voltage at coax from decoder and it fluctuates alot anywhere from 4.66 - 4.79v , i dont think it should be changing that much?

If i measure voltage at at loop amplifier outputs it is a constant 0.57v

what validations can i do?

thanks for any help.