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Update: Motorizing this dish would not be beneficial. So that is a no go. The arm that came with it is in fact wrong. Even with the half broke dual lnbf holder that came with it from impakt satellite. So has been suggested to me many things but one in particular is to start with getting a single universal lnbf bracket holder. Then even with that installed to the current arm the lnbf will still be off but by moving it around by hand until I get signal. Then fine tuning by either moving the lnbf bracket adjustment or getting a combination of washers and a longer bolt, possibly move the universal lnbf bracket holder further away from dish until the lnb can see the dish better.
Then after all that I can move on to multi lnbf's. Golly. Wouldn't it be nice to just buy something that would work the first time.

Curious... How did you determine that the arm is wrong? Reseller clarification? Incorrect part number? Won't bolt onto the dish? Incorrect offset angle? Incorrect arm length?

There are specific different arms made for the Channel Master or Prodelin antennas made for the original Primestar system. One for the model 75-E, and another that has Red printing on the arm specifically made for the model 84-E, which is longer.

Multifeed operation requires that you have the proper distance for the antenna model, and therefore the arm. The back of your antenna should be embossed with either a 75 or an 84 on fiberglass surface. I don't know what you might have if it is a 74 cm version, but probably a mismatch or a completely different manufacturer.
Following my modification instructions and assuming the correct distance you should be able to find an initial signal with the system's matching LNB and feed device (if it is a Primestar), then hold a conventional Ku LNBF left or right of the arm, with a slight up or down height adjustment to peak the signal at a similar focal distance. This is where I used half inch EMT tubing after plotting and confirming hottest focal points, along with conduit adapters and either self-made or commercial LNBF holders otherwise available from distributors such as DMS.

I believe your arm is correct. Every 60E and 75E dish for Shaw in Canada has the same "Directv" arm you are referring to. It's a flat rectangular arm that is a different length for each dish. Millions of them here work fine for various satellites.

Catamount

Titanium said:

Curious... How did you determine that the arm is wrong? Reseller clarification? Incorrect part number? Won't bolt onto the dish? Incorrect offset angle? Incorrect arm length?

Click to expand...

mikekohl said:

There are specific different arms made for the Channel Master or Prodelin antennas made for the original Primestar system. One for the model 75-E, and another that has Red printing on the arm specifically made for the model 84-E, which is longer.

Multifeed operation requires that you have the proper distance for the antenna model, and therefore the arm. The back of your antenna should be embossed with either a 75 or an 84 on fiberglass surface. I don't know what you might have if it is a 74 cm version, but probably a mismatch or a completely different manufacturer.
Following my modification instructions and assuming the correct distance you should be able to find an initial signal with the system's matching LNB and feed device (if it is a Primestar), then hold a conventional Ku LNBF left or right of the arm, with a slight up or down height adjustment to peak the signal at a similar focal distance. This is where I used half inch EMT tubing after plotting and confirming hottest focal points, along with conduit adapters and either self-made or commercial LNBF holders otherwise available from distributors such as DMS.

Click to expand...

catamount said:

I believe your arm is correct. Every 60E and 75E dish for Shaw in Canada has the same "Directv" arm you are referring to. It's a flat rectangular arm that is a different length for each dish. Millions of them here work fine for various satellites.

Catamount

Click to expand...

OK. So its been a while. My apologies to all. I have needed the over time at work. To Answer the arm issue on the 84e dish. The re-seller has not made an attempt to respond to my questions in any capacity. Total radar silence. So... I will remember that for future dish purchases that's for sure. The dish was made to use a Prim-star type lnb arm. Designed to hold a eagle aspen style lnbf. It is slightly longer in length than the direct tv flat style that actually came with the dish that was purposely packaged to go with it but not as designed to be used with it. YES. I have learned that the multi lnbf does in fact need proper distance. In wich I didn't and could not have because it is a direct tv style arm. I am sure it worked to some capacity for some sat's but why set your self up for failure with poor signal quality? The arm that came with the dish started to collapse while tightening and I had to buy washers to put inside it. The dish was not designed to be used with this arm. Yeah it will bolt up, but you have to be careful and then mods have to be made to make the lnbf work right. PITA. So I ended up not having multi lnbf set up after all. Just two dishes. You can see what was done by looking at the pictures. Pretty much I took titanium's advise to get the single lnbf holder that was adjustable. This actually is the best set up I think. I did have to bend it to get it to hit the dish correctly but not by much. I can tune in any sat now. Only I decided to have the dish set to pick up 125 west. The other dish is still aimed at 97 west.