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Sat dish for AMC-8
- Thread starter sg17847
- Start date
We have used a 9 foot dish to receive AMC-8 with no difficulty but a pizza box is another matter.
If you have the correct lnb try it and let me know if it clears a 3.0 ebno.
If you have the correct lnb try it and let me know if it clears a 3.0 ebno.
A
amfmhd
Guest
The smallest dish I have seen used on AMC 8 for radio Starguide III reception is a 1.8 meter Prodelin dish. This is a commerical dish, it's not cheap, but it is small.
From what I have seen on the SGIII eb/n0 display...you might ---and I meant might be able to get a working signal on a 1.2 meter dish. The gain between the 1.8 and 1.2 is not the only issue. As you go below 2.4 meters in dish size the beam width becomes an issue. the 1.8 is the smallest I have seen that will work.
From what I have seen on the SGIII eb/n0 display...you might ---and I meant might be able to get a working signal on a 1.2 meter dish. The gain between the 1.8 and 1.2 is not the only issue. As you go below 2.4 meters in dish size the beam width becomes an issue. the 1.8 is the smallest I have seen that will work.
K
kyscott
Guest
How are you going to mount the C-band LNB to the dish?
K
kenglish
Guest
I've seen some C-band LNBs for those smaller dishes, but an offset would require a conical feed horn.
Looking at the Lyngsat info, though, he's gonna need about 1.0 m for anywhere besides the center of the boresight:
http://www.lyngsat-maps.com/maps/amc8_c.html
I'd look around for a larger, used C-band dish from a hotel someplace. Many of them are moving to Ku band or Cable.
Looking at the Lyngsat info, though, he's gonna need about 1.0 m for anywhere besides the center of the boresight:
http://www.lyngsat-maps.com/maps/amc8_c.html
I'd look around for a larger, used C-band dish from a hotel someplace. Many of them are moving to Ku band or Cable.
Something I'd remind the boss is that normally it's things like the LNB or connectors/coax that goes bad in the system. I'd be most inclined to get a spare LNB, extra run of coax out to the dish and a spare receiver just in case at a minimal. An extra dish would be great, but less likely the real point of failure in most cases.
You might just start checking around with other local stations in the area. It is likely there are some of them that have an extra GOOD dish they will sell you that they aren't using anymore. Things change and shows or services get cancelled from time to time leaving an un-needed dish available. If you have some good tower guys around in your area they might be able to transport and set up the dish for you if you are unable to do that part yourself. Make sure and pull the info on what type of pole base you need and how much concrete to put around the pole. Many people don't check the specs and are sorry after a good windstorm. Whatever you do make damn sure the dish is a 2 degree dish. You don't just want any old dish as interference from adjacent satilites can be a big issue these days.
Good luck.
You might just start checking around with other local stations in the area. It is likely there are some of them that have an extra GOOD dish they will sell you that they aren't using anymore. Things change and shows or services get cancelled from time to time leaving an un-needed dish available. If you have some good tower guys around in your area they might be able to transport and set up the dish for you if you are unable to do that part yourself. Make sure and pull the info on what type of pole base you need and how much concrete to put around the pole. Many people don't check the specs and are sorry after a good windstorm. Whatever you do make damn sure the dish is a 2 degree dish. You don't just want any old dish as interference from adjacent satilites can be a big issue these days.
Good luck.
Stefan, from your original statement that it is your GM who wants a backup dish, I am going to do something dangerous and make a few assumptions that this request is because:
1: your facility is so dependant on satellite-delivered programming that an outage will mean severe revenue loss, or...
2: the system previously had a catastrophic failure, or...
3: your current satellite system is less-than-fully dependable...
..or any combination of the above.
My point is to suggest a different plan from just piecing together some spare parts, specifically that if your GM is so concerned about the "dish", you should suggest that the facility put in a new "dish", meaning the actual dish, LNB, cable and in-building distribution system, and then use the existing system as a parallel backup, perhaps continuing to run one receiver (program) off the old dish so that you will know if/when it fails.
A "dish" -- meaning the entire satellite reception system -- is an electro-mechanical beast that can suffer aging effects at multiple points, ranging from the reflector getting whacked around by enthusiastic yard-mowers (loss of parabolic shape), to coax cables getting crimped (see previous reason), to connectors or LNBs becoming lossy due to moisture, vibration, heat/cold cycles or even nearby lightning/static discharge.
Get a few quotes for a pro-installed, all-new 3.8 meter az-el fiberglass dish, coax and distribution system -- try http://www.dawnsat.com/ or http://www.clearchannelsatellite.com/ or your favorite broadcast equipment vendor -- and run them by your GM. You never know, he or she just might bite ... ever heard the old sales phrase "you don't get the order if you don't ask for it"?
Good luck.
1: your facility is so dependant on satellite-delivered programming that an outage will mean severe revenue loss, or...
2: the system previously had a catastrophic failure, or...
3: your current satellite system is less-than-fully dependable...
..or any combination of the above.
My point is to suggest a different plan from just piecing together some spare parts, specifically that if your GM is so concerned about the "dish", you should suggest that the facility put in a new "dish", meaning the actual dish, LNB, cable and in-building distribution system, and then use the existing system as a parallel backup, perhaps continuing to run one receiver (program) off the old dish so that you will know if/when it fails.
A "dish" -- meaning the entire satellite reception system -- is an electro-mechanical beast that can suffer aging effects at multiple points, ranging from the reflector getting whacked around by enthusiastic yard-mowers (loss of parabolic shape), to coax cables getting crimped (see previous reason), to connectors or LNBs becoming lossy due to moisture, vibration, heat/cold cycles or even nearby lightning/static discharge.
Get a few quotes for a pro-installed, all-new 3.8 meter az-el fiberglass dish, coax and distribution system -- try http://www.dawnsat.com/ or http://www.clearchannelsatellite.com/ or your favorite broadcast equipment vendor -- and run them by your GM. You never know, he or she just might bite ... ever heard the old sales phrase "you don't get the order if you don't ask for it"?
Good luck.
K
kyscott
Guest
Why don't you check these guys out:
http://www.sadoun.com/Sat/Order/Dishes/C_Band_satellite_dish.htm
If you are looking for a dish to stay on AMC 8, they have some pretty good prices on C Band, prime focus stationary ground mount dishes.
http://www.sadoun.com/Sat/Order/Dishes/C_Band_satellite_dish.htm
If you are looking for a dish to stay on AMC 8, they have some pretty good prices on C Band, prime focus stationary ground mount dishes.
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