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DISH Western & Eastern Arcs

Updated 9/12/2017

DISH Arcs, Satellites, and Dishes

DISH Arcs, Satellites, and Dishes

Though the Biblical Noah saved the world using a single Arc, DISH satellite TV uses two Arcs — named the Western and Eastern — to broadcast its programming.

The first arc, the Western Arc, uses 3 satellites (110°, 119°, and 129°) to broadcast DISH programming.

Western Arc Satellites (as shown on DP Air Pro app)

Western Arc Satellites (as shown on DP Air Pro app)

The newer arc, the Eastern Arc, also uses 3 satellites — 61.5°, 72.7°, and 77°.

Eastern Arc Satellites (as shown on DP Air Pro app)

Eastern Arc Satellites (as shown on DP Air Pro app)

Why should you care?

Depending on where you are, you may need to use a specific arc to receive the DISH local TV stations that are nearby.

To figure out which arc is needed,

  1. Enter your current ZIP code on this web page — for example, 54311. The city supplying the local TV stations in your area will appear. For 54311, Green Bay, WI will appear.
  2. Next, using this DISH Markets web page, look up the TV stations and satellites listed for this city. For Green Bay, WI, satellite 61.5° (of the Eastern Arc) is used for Green Bay’s HD (High Definition) local stations, and satellite 110° (of the Western Arc) is used for the SD (Standard Definition) local stations.

The Green Bay example just used is typical — that is, DISH appears to try to use both arcs for all its markets (see map below). This is great for RVers because it simplifies things.

Click on map to enlarge

However, when traveling around the country, it’s best to have a way to pick up the programming on both arcs.

For example, we use a rooftop Winegard Travler SK1000 (DISH version), but this dish is really just a Western Arc dish. (You can pick up the Eastern Arc 61.5° satellite, but not all 3 Eastern Arc satellites.)

If you’re considering using a 1000.2 or 1000.4 dish, remember that their parts — and LNBs — are not interchangeable.

Until we started using a Hopper 3 in our RV, we used a portable open-faced dish, the 1000.4, which can be configured for either the Eastern or Western Arcs:

DISH 1000.4 with Eastern (left) and Western (right) LNBs shown

DISH 1000.4 with Eastern (left) and Western (right) LNBs shown

DISH PRO HYBRID (DPH) LNBs

However, because we now use a Hopper 3, we have to use a 1000.2 open-faced dish that uses DISH Pro Hybrid (or DPH) LNBs.

The DPH LNBs is available in both Eastern Arc and Western Arc versions:

DPPvsDPH_03-wa dph and ea dph

DISH Pro Hybrid (DPH) Western Arc (left) and Eastern Arc (right) LNBs

DPPvsDPH_09-wa dph ports closeup

DPH Western Arc LNB (part number #201499)

DPPvsDPH_10-ea dph ports closeup

DPH Eastern Arc LNB (part #201700)

DISH PRO PLUS (DPP) LNBs

If you’re not using a Hopper 3, then you can use DPP LNBs.

These are the part numbers of the DPP LNBs used on both the 1000.2 and 1000.4 dishes:

  • 1000.2 Western Arc LNBs — #145511
  • 1000.2 Eastern Arc LNBs — #184187 (This is called the Eastern Twin option because only two LNBs are used: 61.5° and 72.7°. This is one reason why we used the 1000.4 dish. It can pick up all three of the Eastern Arc satellites.)
  • 1000.4 Western Arc LNBs — #175338
  • 1000.4 Eastern Arc LNBs — #157092

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12 Comments Post a comment
  1. Ray Balzer #

    I don’t see how it’s an advantage to RV’rs that Dish is trying to use both. I understand from your comments that the 1000.4 can be used to get one or the other arc by switching out parts, but if you need satellites from both arcs, it seems you need two tripods and dishes. What am I missing? This seems a burden to RV’rs.

    Can you usually get all channels (in at least one format — SD or HD) from just EA or WA, just perhaps losing HD version? If so, I could use the slightly smaller 1000.2 and WA and not have to rebuild my dish, yet still get any needed channel (although maybe in SD). And save space and cash. Note: I’m usually in Western USA — Mountain states and west.

    December 15, 2015
    • . . . if you need satellites from both arcs, it seems you need two tripods and dishes. What am I missing?

      You just use the sats from one arc or the other, not both.

      Can you usually get all channels (in at least one format — SD or HD) from just EA or WA, just perhaps losing HD version?

      Yes.

      I could use the slightly smaller 1000.2 and WA and not have to rebuild my dish, yet still get any needed channel (although maybe in SD). And save space and cash. Note: I’m usually in Western USA — Mountain states and west.

      If you’re out West, there’s really no need for the Eastern Arc. Nevertheless, I recommend using the 1000.4 over the 1000.2 because I think the 1000.4 is built better.

      December 15, 2015
  2. cptdzl #

    What are your thoughts on the winegard X1 versus the X2. I like the size of the X1 but as we live and travel the east coast I think my best (only) choice is to go with the X2. I am only considering DISH network.

    January 10, 2016
    • Totally agree with you — go with the X2 mainly because of both Western & Eastern Arc coverage. X2 owners really like the dish.

      January 10, 2016
  3. Ronald Clanton #

    I really like the DISH market map. Where did you get it? Is there an updated version available?

    October 3, 2016
  4. Rico Barbina #

    1) An observation/ question: The diagram of the western and eastern arc ( DISH Western & Eastern Arcs Updated 2/10/2016– DISH Pro Hybrid information added) looking as though you’re looking north.

    However, the picture with the superimposed western arc satellites in the sky is as though you are looking south.

    Q1) Is that correct? (In other words the satellite 129 is to the west of 110.)

    2) the illustration of 1000.4 WA LNBS #175338 implies each coaxial output corresponds to each satellite within the arc. It is my understanding all outputs are identical. (although there is an input, it’s not part of my question)

    Q2) Which of these statements is correct:
    1) Each output corresponds to a single satellite
    or
    2) Each output contains the “content” of all three satellites (if the dish is pointed correctly and the LNBs are working properly)

    My questions are not intended to beat anybody up or be Mr. Right. I’m trying to reconcile information I’ve gathered over the internet (some probably accurate; some probably inaccurate)

    Thanks,

    Rico

    December 7, 2016
    • 1) An observation/question . . .
      The DISH Arcs, Satellites, and Dishes diagram doesn’t represent a “sky” view of the DISH sats as sat 118.7 couldn’t be where it is in the sky.

      The DP App Pro photos are actual sky positions.

      Q2) Which of these is correct
      Both are correct. For example, to acquire the Eastern Arc sats, you should peak the signal using sat 72.7. So to peak a 1000.4 LNB (#157092), you connect a signal meter to the “72.7” connection. However, after you peak, you can connect a VIP211 receiver to any of the three connections, and the 211 will receive all three sats.

      December 7, 2016
  5. Scott C Stanfield #

    I recently purchased the 1000.2 eastern arc DPH lnb and tested it last night. I had only the port #2 connected for the 61.5 satellite and could not get a signal on my Hopper 3. I finally just tried port #1 as a last resort and was able to get 61.5?? I didn’t know if your picture was purhaps labeled incorrectly or how that happened. Do I even need two cables? Thank you!

    October 5, 2017

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