Thinking of installing a TRX-2 in my car and feeding it with a Larsen NMO-150/450/800. I have this antenna on my pickup and it works very well. I also use it with my FD radios for VHF-Hi and 800 MHz. But if I mount the main unit under the back seat, which is the current plan, I won't be able to just disconnect it from the scanner and plug it into my H-T's when I need the extra range, as I do presently with my handheld scanners. So I am wondering if there is an A/B switch with enough isolation to keep my scanner from getting fried if I TX through it? Did a search and didn't find anything, might not have been worded properly, apologies if this has already been addressed.