Hi. I have my new IC 7300 and the LDG AT 100 Pro. I bought the cable interface that has the tuner plug to mate with the IC7300’s tuner socket and the power and radio plugs for the tuner. The tuner powers up, but after I set the internal tuner to manual when I press the tuner button on the radio, the internal tuner tunes, not the LDG. I have to manually turn the power down and then send out a few signal and the tuner tunes. In other words the tuner acts like it is only getting operating power from the radio but no command to tune and the radio does not send out a carrier to the antenna so the tuner can tune.
When I had the same set up with my IC 706, I hit the tuner button and the radio would transmit 10 watts and the tuner would tune. I am wondering if I did something wrong in the setup, or if the cable is faulty.