I have an Astro Saber UHF and recently found out that it is capable of picking up a digital trunked system. If at all, I would want to look into having it programmed to receive only. How many systems can be programmed into that radio? It is a model 3 with over 200 channel capacity. Say for example there are two separate UHF digital trunked systems, could they both be programmed into that radio? Again receive only, not for transmitting. Same question for the XTS2500 as I am looking into getting of of those also.