WOW, lots of history with DISH.They were around when Dish started back in 96
It didnt even have timers on it (the 4000 did...that also added a UHF antenna)
I owned the 5000 which had a OTA (NTSC) tuner in it and had guide info....but only Prime Time events on ABC, CBS, NBC only
I think I got dish to give me $10 credits for a couple of 510s and assorted other SD receivers a while back. Anybody need a slightly dusty DP 34 switch or a Dish Pro adapter? I could be persuaded to part with them for a modest fee.