Batboard

Ok, I have read several threads about people moving/trying to move there radios from a A3 to anything else. How about moving a radio from a A4/A5/A7/A9 to a HHCH A3? Is it even possible without switching out a bunch of boards?

Bryan
Sunny AZ

If anyone can answer this I would also appreciate that being addressed for Astro Series. I have and Astro Spectra 4 and 7 unit that I would like to run as 3's