Thanks for the bravery testing this out. I saw a warning in one of the links above about possible damage to the internal switching with one of the products. That was a very big pause on my part. I know with my old LG dumb phone I never had issues with internal switching, but clearly you have shwon that the smart phone does appear to be smart.
Quick question, how much work was it to mod the exterior of the adapter? Being the owner of a couple of Trucker antennas, I may need to play with this feature. Not greatly pressing as I have a powered amp, but it might be handy to have the option, as I am using the powered amp with a trucker antenna.