[arboristman]

thanks to my buddy rtoodee2 for his info
c/p



SuperDISH is a next generation dish antenna designed to receive a signal from 3 orbital locations. Typically comes complete with Dish, 3 DP LNB's, support struts, and most importantly, a DP34 Switch - good for 3 sats to 4 receivers. That's for DN. For FTA, we can get 6 sats to 4 receivers on this switch and a few others, quite easily.

The LNBF for the 105° or 121° location is also unique and cannot be replaced with any other current DN LNBFs

SuperDISH channel is ch. 7000 for 105° and ch. 900 for 121°.

There are basically 3 different Dishes, plus 2 LNB choices in each basic Dish design (105 & 121)

SuperDish may come in Type 1, New Type 1, and Type 2

2 Different sets of LNB's are available for different sat combinations

SuperDish 105 includes the 105, 110, 119 orbital positions

SuperDish 121 includes the 110, 119, 121 orbital positions

105 and 121 LNB assemblies are interchangeable, just different setup for pointing.

You may also encounter two types of reflectors.

Type 1 is metal, like the DISH 500. Size is 24" Tall x 33.3 Wide. Type 1 requires metric tools.

Type 2 is a composite material with a webbed back ala star choice. Size is 21" x 36. Type 2 uses standard tools.

There is a new Type 1 SuperDISH for both 105º and 121º. The main difference is in how the support arm attaches to the skew plate. For the new Type 1 SuperDISH, the support arm attaches to the skew plate with two screws from the bottom of the support arm.

The skew plate and support arm are not interchangeable between the original and new Type 1 SuperDISH. If replacing a skew plate or support arm on a Type 1 SuperDISH, you may have to replace both the skew plate and the support arm to ensure they properly attach.

To accommodate the larger reflector, SuperDISH’s foot and mast design are slightly larger than DISH 500 dish antenna design. The mounting mast for the SuperDISH is larger (2" for Type I, 2 3/8" for Type II) than the standard mounting mast. The dish requires a more secure mounting surface than that required for a DISH 500.

Why it’s bigger: the DBS spectrum requires that satellite locations be separated by 9°. For example, orbital locations 110° and 119° are nine degrees apart. DirecTV’s 101° orbital location is nine degrees from the 110° orbital location. Since each satellite is 9° apart, the DBS satellites can broadcast their signal using higher power without interfering with each other. Because the DBS satellites broadcast with high power, we may use a smaller dish reflector size to receive the signal: an 18” to view one orbital location; or a 20” (DISH 500) for two orbital locations.

In the FSS spectrum, satellites are spaced only 2° apart. Because of that, satellites in the FSS spectrum are required to broadcast at a lower power – otherwise, they’d interfere with each other. So, the dish reflector needs to be larger, to receive the signal from the lower power satellites in this spectrum, and to provide sufficient “signal rejection” from the 2° spaced neighbor satellites. The larger the reflector, the narrower it will focus the signal beam, providing better reception from a lower-power signal.

The SuperDISH LNBs typical LNBF (“Low Noise Block converter with integrated Feedhorn”) contains both the electronics to down-convert the DBS spectrum (12.2 GHz to 12.7 GHz) to the frequency range the receiver and cable can handle (950 to 2150 MHz), as well as the “eye” that receives the signal bounced off the dish reflector. The FSS LNB converts a different spectrum (11.7 GHz to 12.2 GHz) to the 950 to 2150 MHz frequency range.

All locals broadcast from 105° and some locals and International programs from 121°.

HD channels will not require a SuperDISH as HD is broadcast from the 61.5°, 119°, 129° and 148° orbital positions.

FSS antennas are also built differently than what we’re used to – not only the size, as discussed above, but the FSS signal must be placed in the center of the dish reflector (also called the “bore sight”), which means the FSS LNB and feedhorn are in the center of the dish antenna. DN had to specially design the full LNB/feedhorn assembly they’re using to fit the two DBS LNB/feedhorns PLUS the FSS LNB/feedhorn. For example, when focusing on the 121° FSS orbital location, the 119° LNB/feedhorn doesn’t have a lot of “space” to see its area “in space”. As a result, you will see two different options for the LNB/feedhorn assembly: one version for the 105° SuperDISH and another for the 121° version. There are also unique LNB assemblies for each dish reflector.