I know a lot of you out there have more knowledge than I do on equipment, so take a look at this and see if it would have some possibilities.
http://www.cisco.com/en/US/prod/collateral/video/ps9159/ps9182/ps9185/7016667.pdf
I am interested in an updated receiver also. I have been trying ,unsuccessfully to get a hold of someone with Motorola to see what it would take to get them to consider investing in an updated receiver. Does an have contact info?