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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. Made for Dish Network by Winegard with either Legacy Twin or Dish Pro (DP) Twin LNBs used to pickup the Echostar 110 and 119. The Pro Twin LNB features a built-in DP21 videopath multiswitch compatible with all newer "DishPro" receivers. Older units equipped with they legacy twin LNB, newer equipped with DishPro Plus twin LNB. Units may also be available with the old Legacy Quad, which still received from two satellites but allowed for a total of four receivers.Made for Dish Network by Winegard with either Legacy Twin or Dish Pro (DP) Twin LNBs used to pickup the Echostar 110 and 119. The Pro Twin LNB features a built-in DP21 videopath multiswitch compatible with all newer "DishPro" receivers. Older units equipped with they legacy twin LNB, newer equipped with DishPro Plus twin LNB. Units may also be available with the old Legacy Quad, which still received from two satellites but allowed for a total of four receivers. There is also a Dish Pro Plus (DPP) LNB type which receives from two satellites but has an input allowing for a third LNB to be added, ''see Dish Pro Plus below''.=== LNB Types Explained ====== LNB Types Explained (LNBF) === The term '''LNB''' and '''LNBF''' may be used interchangeably on DBS satellite systems. The F simply refers to "Feedhorn." The DBS systems use a small circular LNB that is combined with the feedhorn, making the LNB feedhorn combination denoted as LNBF, or just LNB. There is a common misconception that the presence of an F in the LNB acronym indicates a "legacy" LNB, this is NOT the case. LNB and LNBF are basically interchangeable. We choose to use LNB since it is abbreviated.'''Dual LNB:''' This refers to an LNB designed to support two satellite receivers, or more with the addition of a multiswitch.'''Dual LNB:''' This refers to an LNB designed to support two satellite receivers, or more with the addition of a multiswitch. It is also referred to as the Dish Pro Dual LNB.'''Legacy Twin:''' This unit is two circular LNB units inside one plastic housing with two outputs. The multiswitched signal combines both satellites 110 and 119 to be carried on a single cable. Two cables may be connected to this unit for two receivers. The Legacy Twin points to two satellites in space.'''Legacy Twin:''' This unit is either one LNB or two LNB units inside one plastic housing with two outputs. For the dual LNB version the multiswitched signal combines both satellites 110 and 119 to be carried on a single cable. Two cables may be connected to this unit for two receivers. The Legacy Twin points to two satellites in space.'''Legacy Quad:''' This unit also has two circular LNB units inside one plastic housing, except with four total outputs. The multiswitched signal combines both satellites to be carried on one cable, and up to four receivers may be connected, one cable per receiver. The Legacy Quad points to two satellites in space.'''Legacy Quad:''' This unit has two circular LNB units inside one plastic housing, with four total receiver outputs. The multiswitched signal combines both satellites to be carried on one cable, and up to four receivers may be connected, one cable per receiver. The Legacy Quad points to two satellites in space. There is no legacy quad with only one LNB. '''Dish Pro Twin:''' '''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. The addition of a 3rd dish or LNB allows it to point to three satellites in space. [[Image:LNB-picture-chart.jpg]]Brief Summary: The terms '''Single''', '''Twin''', and '''Quad''' refer to the number of connectors on the LNB unit, relative to the number of receivers that may be connected.The name '''Twin''' is often erroneously used to describe the housing with two LNBs. (''explained in detail later'')The term '''Dual''' is used to describe the double LNB in a single housing unit such as is on a Dish 500.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.=== Answered and Unanswered Questions ===Q: If DP makes it possible to connect many (more than four) receivers on a LNB or LNB set, what is the point of offering a quad version of the Dish 500 Pro twin LNB unit?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.=== LNB Nomenclature Confusion ===A Word document and common forum "sticky post" called "Dish Network Legacy LNB and Switch types" contains some erroneous and misleading information in the author's attempt to clarify terms involved with minidish LNB parts. Also, it should be noted that the use of the acronym IRD refers specifically to the receiver.Many forum and news group posters frequently mistakenly interchange the terms "twin" and "dual" when inappropriate. The confusion all boils down to whether or not the discussion is in regards to the number of connectors, the number of receivers that may be connected, or the number of satellites a set of LNBs or complete LNB unit may receive from. Great care has been taken to correct nomenclature errors throughout our documentation, however, due to public contributions and sketchy sourced data some terms may require correcting outside this immediate definitions clarification component of the documentation.Reseller and minidish parts and service retailers sometimes mislabel LNB parts, confusing legacy LNB units with DP LNB units. One noteworthy example is the distinctive feature of some Dish 500 LNB units having a shared plastic LNB cap while others have two individual circular LNB caps over receiving part of the LNBs. The cap distinction seems to have to do with the number of connectors (twin versus quad) rather than a distinction between legacy and Pro.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.Switch Types:* SW21 - Connect 2 dishes to one receiver.* SW42 - Connect 2 dishes to two receivers. Shipped with first generation Dish 500 units.* SWAJ - Connect to receiver accessory input to switch between two dishes.* SW44 - Connect 2 dishes that have dual LNBs to four receivers. Requires additional power. Deprecated by dish quad.* SW64 - Connect 3 dishes that have dual LNBs to four receivers. Requires additional power.=== Dish 1000.2 LNB (LNBF) Assembly ===[[Image:dishnet1000-2plusksasfkh.png]]