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=== Model 381 ===This is a SD (Standard Definition) satellite receiver with HD capabilities for over the air signal. This satellite receiver has a built in Digital TV Receiver for broadcast TV. The 381 is the same as a Model 811, less HD satellite capability. Dish Network describes this strange receiver as "A standard definition satellite receiver with the added benefit of being able to view analog/digital (HD) over-the-air broadcasts using HD outputs.[[Image:dishnetreceiver381.jpg]]=== Model 922 HD DVR ===Connects two independent TVs for viewing at home, plus watch live and recorded programming on your computer or mobile device. Includes 1 terabyte hard drive. [[Image:dishnetreceiver922.jpg]]=== Dish 500 Dual Single LNBs ====== Dish 500 Dual LNBs ===The first Dish 500 Dishes used two-single LNBs for a one receiver system. This Dish 500 with two Dish pro single LNB's will receive signals from Echostar 7 (110) and from Echostar 6,8 (119). A Dish 500 Dual installation may use DP (Dish Pro) LNB types or two Legacy LNB types. Either allows a receiver to get signal from both the 119 LNB and the 110 LNB. Dish network developed the SW-21 Switch for combing the signal from the two separate LNBs. Note that even with the dual DP LNBs the SW-21 switch is still required. The SW-21 Switch is a digitally controlled A/B switch.The first Dish 500 Dishes used two-single LNBs for a one receiver system. This Dish 500 with two Dish pro single LNB's will receive signals from Echostar 7 (110) and from Echostar 6,8 (119). A Dish 500 Dual installation may use DP (Dish Pro) LNB types or two Legacy LNB types. Either allows a receiver to get signal from both the 119 LNB and the 110 LNB. Dish network developed the SW-21 external Switch for combing the signal from the two separate LNBs. Note that even with the dual DP LNBs the SW-21 switch is still required. The SW-21 Switch is a digitally controlled A/B switch. The dual came with either two single LNBs which was rare, or two dual LNB's, which were LNBs each having two connectors, totaling four connectors. The term '''Twin''' is often erroneously used to describe the housing with two LNBs.The name '''Twin''' is often erroneously used to describe the housing with two LNBs. (''explained in detail later'')The term "dual" was already established to refer specifically to an LNB that can receive from a single satellite and that has two outputs for two receivers. So when Dish Network wanted a name to refer to their single housing that contained LNBs for pointing at two satellites they used the word "Twin" with an uppercase T. Twin is a name created by Dish Network with a different meaning than the word twin (lowercase t). There is no such thing in the Dish Network world as a Twin dual LNB unit.