Group, I am looking to put a Collins GRR-18 and or a GRT-17 system on the air and need some parts and info, I know there some experts out there, I have a rack and a bunch of slices but not sure what it takes to make it all work. will purchase or have lots of mil items for trade. need for sure slices 889B-1 and 889A-2, 887B-1 any help appreciated Tony 757-270-8424