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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. '''Dish Pro Twin:''' This unit is either one LNB or two LNB units inside one plastic housing with two outputs. Polarization is converted so everything is vertical polarity. The Dish Pro Twin will not work with older legacy receivers. Allows for the connection of more than four receivers. This unit points to two satellites in space.'''Dish Pro Twin:''' This unit is either one LNB or two LNB units inside one plastic housing with two outputs. Polarization is converted so everything is vertical polarity. The Dish Pro Twin will not work with older legacy receivers. Allows for the connection of more than four receivers. This unit points to two satellites in space. Adding receivers does not require replacement because it can feed the DP34 or DPP44 for up to 12 receivers. Systems with the DP Twin are designated xxx-22D.'''Dish Pro Plus Twin:''' Like the Dish Pro Twin this unit is two circular LNB units inside one plastic housing with two outputs. Polarization is converted so everything is vertical polarity. The Dish Pro Twin will not work with older legacy receivers. The Plus refers to an additional input which allows for a third LNB to be added, for connections to 118.75 FSS Ku-band satellite in addition to 110 and 119 DBS band. Allows for the connection of more than four receivers. This unit points to two satellites in space.'''Dish Pro Plus Twin:''' Like the Dish Pro Twin this unit is two circular LNB units inside one plastic housing with two outputs. Polarization is converted so everything is vertical polarity. The Dish Pro Twin will not work with older legacy receivers. The Plus refers to an additional input which allows for a third LNB to be added, for connections to 118.75 FSS Ku-band satellite in addition to 110 and 119 DBS band. Allows for the connection of more than four receivers. This unit points to two satellites in space. The addition of a 3rd dish or LNB allows it to point to three satellites in space. 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 '''Plus''' typically indicates an additional LNB with the capability of receiving from more than two satellites.The term '''Plus''' typically indicates an additional LNB with the capability of receiving from more than two satellites. Dish Plus LNBs have a prominent “dp” logo.=== Unanswered Questions ====== Answered and Unanswered Questions ===Q: Is the shared plastic LNB cap a specific indicator of a legacy Dish 500 LNB versus a DP 500 LNB? All indications are that the unit with the shared cap is the twin and the one with individual circular caps is on the quad units, without regards to legacy or DP.Q: Is the shared plastic LNB cap a specific indicator of a legacy Dish 500 LNB versus a DP 500 LNB?<BR>A: All indications are that the unit with the shared cap is the twin and the one with individual circular caps is on the quad units, without regards to legacy or DP. Q: What is the easiest way to distinguish a legacy twin and a dish pro (DP) twin LNB unit?<BR>A: The DP Twin has two LNBs with an internal switch. The plastic housing is about 6" wide and appears identical to the Legacy Twin except for a prominent “dp” logo on the housing. The logo is the best way to distinguish legacy from DP.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.=== Dish 1000.2 LNB (LNBF) Assembly ===[[Image:dishnet1000-2plusksasfkh.png]]