Difference between revisions of "Dish Network Systems"

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=== Model 2800 ===
 
=== Model 2800 ===
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2800 Legacy SD Single-Tuner IR Receiver
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[[Image:dishnetreceiver2800.jpg]]
 
[[Image:dishnetreceiver2800.jpg]]
  
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[[Image:dishnetreceiver.jpg]]
 
[[Image:dishnetreceiver.jpg]]
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=== Model 381 ===
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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.
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 +
[[Image:dishnetreceiver381.jpg]]
  
 
=== Model 501 ===
 
=== Model 501 ===
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=== Model ViP612 DVR ===
 
=== Model ViP612 DVR ===
 
[[Image:dishnetreceiver612.jpg]]
 
[[Image:dishnetreceiver612.jpg]]
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 +
=== Model ViP622 DVR ===
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[[Image:dishnetreceiver622.jpg]]
  
 
=== Model 721 DVR ===
 
=== Model 721 DVR ===
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=== Model ViP722 DVR ===
 
=== Model ViP722 DVR ===
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Dual tuner HD receiver with DVR.
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[[Image:dishnetreceiver722.jpg]]
 
[[Image:dishnetreceiver722.jpg]]
  
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[[Image:dishnetreceiver921.jpg]]
 
[[Image:dishnetreceiver921.jpg]]
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=== Model 922 HD DVR ===
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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. 
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[[Image:dishnetreceiver922.jpg]]
  
 
=== Model 6000U ===
 
=== Model 6000U ===
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[[Image:dishnetreceiver6000U.jpg]]
 
[[Image:dishnetreceiver6000U.jpg]]
  
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== Dishes ==
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 +
=== Dish 300 Single ===
 +
Legacy Dual Ouput LNBF and 18 inch round dish.  Use to receive from 61.5 or 148 degree echostar.  Can also add to a Dish 500 setup using Twin LNB and a DP34 multiswitch to distribute 101, 119, and 61.5 satellite.  Some have Winegard printed on the dish face.  Optimized for Dishnetwork, ExpressVU.  One LNB allows two receivers to be connected.  This original Dish Network dish design, used to receive programming from a single high powered DBS-band satellite, is now mostly in use by customers requiring the use of a second dish in order to receive local programming.
 +
* 18" : 110°
 +
 +
[[Image:dishantenna300leg.jpg]]
 +
 +
=== 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 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.
 +
 +
* 18"x23" : 110°, 119°
 +
 +
[[Image:dishantenna500dualprolnbs.jpg]]
 +
 +
=== Dish 500 Legacy and Pro ===
 +
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''.
 +
* 18"x23" : 110°, 119°
 +
 +
[[Image:dishantenna500.jpg]]
 +
 +
=== Dish Pro 500 Plus ===
 +
Dish 500+ adds a third LNB.  Receive from satellites 110°, 119° DBS-band and the 118.75 FSS Ku-band satellite.  This dish replaces previous 500 models which could not do the 118.75 satellite.
 +
* 20"x24" : 110°, 119°, 118.7°
 +
 +
[[Image:dishantenna500plus.jpg]]
 +
 +
=== Super Dish 105 ===
 +
Can receive from 3 satellites, replaces earlier Dish 500 which could only receive from 2.  The 105 SuperDISH is pointed to receive signals from Dish Network satellites at 105, 110, and 119 degrees West.  SuperDish was the first design by Dish Network to receive satellite programing from the core 110/119° DBS-band satellites and also programming from either the 105° or 121° FSS Ku-band satellites.  Local programming for selected markets were originally broadcast using the FSS Ku-band satellites. Recently, Echostar has migrated many local markets to the new 118.75° satellite to allow most U.S. customers to receive it as well as nationwide high definition programming from a single dish. Currently, there remain a few selected local channel markets that require the use of a SuperDish to receive local channels. These markets will require a second dish if they wish to receive high definition programming.
 +
* 36"x20" : 105°, 110°, 119°
 +
 +
[[Image:dishantennasuperdish105.jpg]]
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 +
=== Super Dish 121 ===
 +
Can receive from 3 satellites, replaces earlier Dish 500 which could only receive from 2.  The 121 SuperDISH is pointed to receive signals from Dish Network satellites at 110, 119, and 121 degrees West.  Appearance nearly the same as 105.  Just like the 105 the 121 is a legacy dish.
 +
* 36"x20" : 110°, 119°, 121°
 +
 +
=== Dish 1000 ===
 +
DISH 1000 legacy provided reception from the 110, 119 and 129.  Replaced by Dish 1000.2.
 +
* 20.5"x22.5" : 110°, 119°, 129°
 +
 +
[[Image:dishantenna1000.jpg]]
 +
 +
=== Dish 1000.2 ===
 +
The Dish 1000.2 antenna gives you the advantage of receiving more programming (such as HD) using a single dish solution. Reception from 110, 119 and 129 and allowing 3 receivers.  Can also add a second dish.  International programming from 119 available.  3 outputs DISH Pro separators can be used to create up to six outputs from the dish.  Compatible with DISH Pro single-orbital LNBFs or DISH Network bandstacked LNBFs, and DISH Pro Plus 44 switch.
 +
* 23.8"x30.9" : 110°, 119°, 129°
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 +
[[Image:dishantenna10002.jpg]]
 +
 +
=== Dish 1000 Plus ===
 +
The DISH 1000+ supports reception from 4 satellites.  Includes a DP Dual Band LNBF and two DP Dual LNBF.  The DP dual band LNBF receives 118.7 and 119 while the 2 DP Single LNBFs receive 110 and 129.  Install using a DPP 44 switch.  Works with any Dish Pro or Pro Plus receiver from Dish Network.  Primarily used to receive nationwide high definition programming, delivered form the 129° satellite. The elliptical Dish1000+ design replaces the Dish1000 design, which did not receive the 118.75 FSS Ku-band satellite.
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* 23.8"x30.9" : 110°, 118.7°, 119°, 129°
 +
 +
[[Image:dishantenna1000plus.jpg]]
 +
 +
 
 +
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== Dish Parts and LNB Information ==
 +
 +
=== Legacy LNB Explained ===
 +
 +
Dish Network uses a general type of LNB called a circular feed lnb.  All of the following DBS providers use specific types of circular LNBs: Dish Network, ExpressVu, and Direc TV.  With these circular LNBs not all are compatible across the DBS providers.  ExpressVu and Dish Network are compatible. 
 +
 +
This term is in reference to LNB switching that is necessary for receivers connected to more than one LNB.  Remember, to receive from more than one satellite, more than one LNB was needed.  Dish 500 introduced a dual LNB system.  The receiver needed a way to switch between one LNB and the other, depending on what satellite a particular channel resided on. 
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 +
The Dish 500 required a 2 in 1 out switch(SW21), and the 4 in 2 out (SW42) switch for the receiver to receive from two satellites (119 and 110).  Then Dish Network came up with the legacy Twin 500 and the legacy Quad. This LNB's incorporated two LNB and internal switches, eliminated the need for external switches. 
 +
 +
The switching system had to be further improved to accommodate the connection of more than four total receivers.  This improvement is the Dish Pro (DP) LNB.  The Dish Pro (DP) LNB takes the odd and even transponders and brings them both to the receiver at the same time.  The old voltage switching control of the legacy LNB polarity became obsolete.  With the new system the signal could be split to multiple receivers.  However, the new Dish Pro (DP) LNB consumes the use of a full 1000 MHz or 1 GHz of bandwidth. Coax cable which worked Ok for Legacy installations may not meet the needs of a DP installation. 
 +
 +
The Dish Pro LNB's are typically denoted by the letters DP or DPP on the side of the LNB.  The Dish Pro (DP) LNBs basically convert all horizontal frequencies to vertical so the lnb handles only one polarity. This is easier to separate signal with DP splitter.  If the Dish Network receiver is a legacy receiver, it will not work with the modern DP LNBs.
 +
 +
Both Legacy LNB Dish 500 and Dish Pro 500 are designed to receive satellite transmissions from 119 and 110.  Twin and Quad legacy LNBs will connect up to four receivers.  They have the SW21 for each output. These LNBs are designed to work for old receivers for Bell ExpressVu & Dish network.  For ExpressVu the satellites are Nimiq 91W & Nimiq 82W.  The newer DP LNBs will not work with older receivers, as stated above.  Newer receivers should have the letters DP right on the front or top to indicate compatibility with modern DP LNB dishes.
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 +
=== LNB Types Explained (LNBF) ===
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 +
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.
 +
 +
'''Single LNB:''' This refers to an LNB designed to support only one satellite receiver. It cannot be split to support more than one receiver at a time.  It may be pointed to a single satellite in space.
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 +
'''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 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 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.
 +
 +
'''Legacy Dual:''' Two '''Single LNB''' units are mounted side by side, they are each in their own separate plastic housing.  An external SW21 switch is needed to combine the signal from each LNB together.  This is intended for supporting only one receiver.  The SW21 is a legacy switch.
 +
 +
'''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. 
 +
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[[Image:LNB-picture-chart.jpg]]
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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.
 +
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The name '''Twin''' is often erroneously used to describe the housing with two LNBs.  (''explained in detail later'')
 +
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The term '''Dual''' is used to describe the double LNB in a single housing unit such as is on a Dish 500.
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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.
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=== 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?
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 +
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.
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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.
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=== LNB Nomenclature Confusion ===
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 +
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.
 +
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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.
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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.
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=== Switches and the DisEqC ===
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A dual has two coax connections. To allow a receiver to get signal from both the 119 LNB and the 110 LNB. Dish network developed the SW-21 Switch. The SW-21 Switch is a digitally controlled A/B switch. When the receiver want to tune to a channel on the 110 satellite, a digital signal using the DisEqC format was sent down the coax to the switch. Another signal was sent to switch back to 119.
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 +
Dish Network also came out with several additional switches for various applications. All the switches used the same DisEqC method. The SW-64 required an external power supply. The SW-64 was used to distribute signal from three satellites (usually 119, 110 and either 61.5 or 148) to as many as four receives. The 61.5 and 148 satellites are used for additional local channel channels, international programming and other niche market market programming.
 +
 +
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.
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* SW64 - Connect 3 dishes that have dual LNBs to four receivers. Requires additional power.
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=== Dish 1000+ LNB (LNBF) Assembly ===
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[[Image:dishnet1000plusksasfkh.gif]]
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=== Dish 1000.2 LNB (LNBF) Assembly ===
  
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[[Image:dishnet1000-2plusksasfkh.png]]
  
 
&nbsp;
 
&nbsp;

Latest revision as of 12:16, 5 June 2011

Receivers

Model 2800

2800 Legacy SD Single-Tuner IR Receiver

Dishnetreceiver2800.jpg

Model 3900

Dishnetreceiver3900.jpg

Model 111 DishPro

Entry-level compact satellite receiver often used for add on televisions in the home.

Dishnetreceiver111.jpg

Model 301

A very common entry level receiver often bundled with Dish 500 systems. The smart card is removable.

Dishnetreceiver301.jpg

Model 311

Same as the model 301 except less desirable because the smart card is built in. There is still a slot for adding a new smart card if and when Dish Network distributes them.

Dishnetreceiver311.jpg

Model 322 Dual Tuner

Dual tuners means you can have two TV sets connected for viewing two different channels simultaneously; for TV in another room. Use RF remote for around home control.

Dishnetreceiver.jpg

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.

Dishnetreceiver381.jpg

Model 501

Receiver and DVR combination unit.

Dishnetreceiver501.jpg

Model 508

Essentially the same as model 501.

Model 510 DVR

Receiver and DVR combination unit with extended storage, 120gb drive for approx 100 hrs.

Dishnetreceiver510.jpg

Model 522 DVR

Dual tuner receiver and DVR combination unit with extended storage, 120gb drive for approx 100 hrs.

Dishnetreceiver510.jpg

Model ViP612 DVR

Dishnetreceiver612.jpg

Model ViP622 DVR

Dishnetreceiver622.jpg

Model 721 DVR

Dual tuner receiver and DVR combination with advanced pause live TV capabilities, PIP, 120gb drive.

Dishnetreceiver721.jpg

Model ViP211

Dishnetreceiver211.jpg

Model ViP222

Dishnetreceiver.jpg

Model 625

Dishnetreceiver625.jpg

Model ViP722 DVR

Dual tuner HD receiver with DVR.

Dishnetreceiver722.jpg

Model 811

Dishnetreceiver811.jpg

"Player" Model 921 DVR

Dual tuner satellite receiver with DVR combined SD and HD with PIP. Video on demand, pause live TV, 250gb drive, up to 180 hours, RF remote standard.

Dishnetreceiver921.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.

Dishnetreceiver922.jpg

Model 6000U

720p or 1080i HDTV receiver. Outputs 720p or 1080i HDTV resolutions. SD and HD.

Dishnetreceiver6000U.jpg

 

Dishes

Dish 300 Single

Legacy Dual Ouput LNBF and 18 inch round dish. Use to receive from 61.5 or 148 degree echostar. Can also add to a Dish 500 setup using Twin LNB and a DP34 multiswitch to distribute 101, 119, and 61.5 satellite. Some have Winegard printed on the dish face. Optimized for Dishnetwork, ExpressVU. One LNB allows two receivers to be connected. This original Dish Network dish design, used to receive programming from a single high powered DBS-band satellite, is now mostly in use by customers requiring the use of a second dish in order to receive local programming.

  • 18" : 110°

Dishantenna300leg.jpg

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 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.

  • 18"x23" : 110°, 119°

Dishantenna500dualprolnbs.jpg

Dish 500 Legacy and Pro

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.

  • 18"x23" : 110°, 119°

Dishantenna500.jpg

Dish Pro 500 Plus

Dish 500+ adds a third LNB. Receive from satellites 110°, 119° DBS-band and the 118.75 FSS Ku-band satellite. This dish replaces previous 500 models which could not do the 118.75 satellite.

  • 20"x24" : 110°, 119°, 118.7°

Dishantenna500plus.jpg

Super Dish 105

Can receive from 3 satellites, replaces earlier Dish 500 which could only receive from 2. The 105 SuperDISH is pointed to receive signals from Dish Network satellites at 105, 110, and 119 degrees West. SuperDish was the first design by Dish Network to receive satellite programing from the core 110/119° DBS-band satellites and also programming from either the 105° or 121° FSS Ku-band satellites. Local programming for selected markets were originally broadcast using the FSS Ku-band satellites. Recently, Echostar has migrated many local markets to the new 118.75° satellite to allow most U.S. customers to receive it as well as nationwide high definition programming from a single dish. Currently, there remain a few selected local channel markets that require the use of a SuperDish to receive local channels. These markets will require a second dish if they wish to receive high definition programming.

  • 36"x20" : 105°, 110°, 119°

Dishantennasuperdish105.jpg

Super Dish 121

Can receive from 3 satellites, replaces earlier Dish 500 which could only receive from 2. The 121 SuperDISH is pointed to receive signals from Dish Network satellites at 110, 119, and 121 degrees West. Appearance nearly the same as 105. Just like the 105 the 121 is a legacy dish.

  • 36"x20" : 110°, 119°, 121°

Dish 1000

DISH 1000 legacy provided reception from the 110, 119 and 129. Replaced by Dish 1000.2.

  • 20.5"x22.5" : 110°, 119°, 129°

Dishantenna1000.jpg

Dish 1000.2

The Dish 1000.2 antenna gives you the advantage of receiving more programming (such as HD) using a single dish solution. Reception from 110, 119 and 129 and allowing 3 receivers. Can also add a second dish. International programming from 119 available. 3 outputs DISH Pro separators can be used to create up to six outputs from the dish. Compatible with DISH Pro single-orbital LNBFs or DISH Network bandstacked LNBFs, and DISH Pro Plus 44 switch.

  • 23.8"x30.9" : 110°, 119°, 129°

Dishantenna10002.jpg

Dish 1000 Plus

The DISH 1000+ supports reception from 4 satellites. Includes a DP Dual Band LNBF and two DP Dual LNBF. The DP dual band LNBF receives 118.7 and 119 while the 2 DP Single LNBFs receive 110 and 129. Install using a DPP 44 switch. Works with any Dish Pro or Pro Plus receiver from Dish Network. Primarily used to receive nationwide high definition programming, delivered form the 129° satellite. The elliptical Dish1000+ design replaces the Dish1000 design, which did not receive the 118.75 FSS Ku-band satellite.

  • 23.8"x30.9" : 110°, 118.7°, 119°, 129°

Dishantenna1000plus.jpg

 

Dish Parts and LNB Information

Legacy LNB Explained

Dish Network uses a general type of LNB called a circular feed lnb. All of the following DBS providers use specific types of circular LNBs: Dish Network, ExpressVu, and Direc TV. With these circular LNBs not all are compatible across the DBS providers. ExpressVu and Dish Network are compatible.

This term is in reference to LNB switching that is necessary for receivers connected to more than one LNB. Remember, to receive from more than one satellite, more than one LNB was needed. Dish 500 introduced a dual LNB system. The receiver needed a way to switch between one LNB and the other, depending on what satellite a particular channel resided on.

The Dish 500 required a 2 in 1 out switch(SW21), and the 4 in 2 out (SW42) switch for the receiver to receive from two satellites (119 and 110). Then Dish Network came up with the legacy Twin 500 and the legacy Quad. This LNB's incorporated two LNB and internal switches, eliminated the need for external switches.

The switching system had to be further improved to accommodate the connection of more than four total receivers. This improvement is the Dish Pro (DP) LNB. The Dish Pro (DP) LNB takes the odd and even transponders and brings them both to the receiver at the same time. The old voltage switching control of the legacy LNB polarity became obsolete. With the new system the signal could be split to multiple receivers. However, the new Dish Pro (DP) LNB consumes the use of a full 1000 MHz or 1 GHz of bandwidth. Coax cable which worked Ok for Legacy installations may not meet the needs of a DP installation.

The Dish Pro LNB's are typically denoted by the letters DP or DPP on the side of the LNB. The Dish Pro (DP) LNBs basically convert all horizontal frequencies to vertical so the lnb handles only one polarity. This is easier to separate signal with DP splitter. If the Dish Network receiver is a legacy receiver, it will not work with the modern DP LNBs.

Both Legacy LNB Dish 500 and Dish Pro 500 are designed to receive satellite transmissions from 119 and 110. Twin and Quad legacy LNBs will connect up to four receivers. They have the SW21 for each output. These LNBs are designed to work for old receivers for Bell ExpressVu & Dish network. For ExpressVu the satellites are Nimiq 91W & Nimiq 82W. The newer DP LNBs will not work with older receivers, as stated above. Newer receivers should have the letters DP right on the front or top to indicate compatibility with modern DP LNB dishes.

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.

Single LNB: This refers to an LNB designed to support only one satellite receiver. It cannot be split to support more than one receiver at a time. It may be pointed to a single satellite in space.

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 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 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.

Legacy Dual: Two Single LNB units are mounted side by side, they are each in their own separate plastic housing. An external SW21 switch is needed to combine the signal from each LNB together. This is intended for supporting only one receiver. The SW21 is a legacy switch.

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.

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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?
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?
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.

Switches and the DisEqC

A dual has two coax connections. To allow a receiver to get signal from both the 119 LNB and the 110 LNB. Dish network developed the SW-21 Switch. The SW-21 Switch is a digitally controlled A/B switch. When the receiver want to tune to a channel on the 110 satellite, a digital signal using the DisEqC format was sent down the coax to the switch. Another signal was sent to switch back to 119.

Dish Network also came out with several additional switches for various applications. All the switches used the same DisEqC method. The SW-64 required an external power supply. The SW-64 was used to distribute signal from three satellites (usually 119, 110 and either 61.5 or 148) to as many as four receives. The 61.5 and 148 satellites are used for additional local channel channels, international programming and other niche market market programming.

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+ LNB (LNBF) Assembly

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Dish 1000.2 LNB (LNBF) Assembly

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