You have their *basic* receiver?
It's the one that came with the service when I hooked up last July.
The only thing different about it is (we had ordered "two rooms" service but only had one hooked up and that may be why we have, technically two receivers in one.
I can record two shows at once if I'm not watching a third channel. My dish has three receive horns on it but only two are hooked up and we have two coaxes coming into the house, with both plugged into the receive unit.
During one reboot after an electric outage, only one receiver came up, but I didn't notice it until I tried recording two different channels at once and got screen message. After a reboot, all was normal again and both receivers (in the same box with two coaxes going in) resumed working and the ability to record two channels at the same time returned.
It's only failed a couple times during heavy rain and once when snow stuck to the dish and built up on it to where it couldn't get enough signal.