I have dabbled a bit with 900Mhz and MT. I have only purchased 3 SR9s to play with and have them all in the shop right now. 2 of them ran for a few months while I tested with them in one area, one has never been used.
Before I purchase more - since the XR9 seems newer but also incompatible, it seems like I should let these go to someone who can benefit from having them and move forward to XR9 now before I have to swap gear in the field. Just makes sense.
If anyone would like to get with me on these please do so. Good deal 
I have never posted like this on this forum - I hope its not violating any rules. I try to be a good neighbor… Just thought it would help someone as well as myself out.
If this was a no-no then just kill it. Thanks. scott=at=brevardwireless.com
Scott