I think I read somewhere the DISH NETWORK has a SAT RCVR and REMOTE CONTROL unit that uses both the IR and UHF modes to control the SAT RCVR from the handheld remote unit.
Might want to check with DISH before buying the additional SAT RCVR for that available option.
There is also a new thing on the forums recently about something being dropped with the DISH NETWORK that has to do with the NATL BROADCAST signals not being transmitted to the DISH SAT RCVRs anymore. Don't know if this may be an issue with you buying another SAT RCVR or not. Something to check on...
Roy Ken