Questions about 105W (AMC15/18)

S

sonyajon

Thread Starter
SatelliteGuys Pro
Pub Member / Supporter
Nov 15, 2009
179
0
New Mexico
Please excuse our ignorance on this but have a couple of questions here

1. Are AMC 18 and AMC 15 in the same orbit?

2. Are both these birds C and Ku?

3. Have read that AMC18 is C and AMC 15 is Ku?

Please teach us something on this, trying to get my Birds and TP's set up on AXBOZ

Thank you very much:confused:
 
M

Mr Tony

SatelliteGuys Pro
Supporting Founder
Nov 17, 2003
306
54
Mankato, MN
1. yes. Both are at 105W
2. AMC18 is C-Band, AMC15 is KU
3. correct

There are spots in the arc where a C-Band only sat and a KU only sat are at the same location. 125W is another one (G14 for C-Band, AMC21 for KU). You can actually have more than one satellite in the same band (C-Band, KU, DBS) at the spot. The frequencies just cant overlap.

Examples of more than one satellite at an orbital slot (between 61-139)
61 (well technically its 61 & 61.5)..Amazonas 1,2, Echo 12 & Echo 15
72 (again its 72 & 72.5)..AMC6, Nimiq 5
79 AMC2 & AMC5...both KU sats
91 Galaxy 17 & Nimiq 1/2
99 Galaxy 16 & the DIrectv HD sat (Ka band)
101 SES1 and 3 Directv sats
103 AMC1 & Directv HD sat (Ka Band)
105 above
119 AnikF1 (well 118.7), Dish 119 & Direct 119
125 above

The thing is 125W until AMC21 was launched a couple years ago was always a C-Band satellite (g5, then G12 then G14). The AMC sat was added later
 
AcWxRadar

AcWxRadar

SatelliteGuys Pro
Apr 26, 2006
4,575
4
40 miles NW of Omaha. Omaha?
Sonyajon,

Since you are using the AZBox, remember to look into the thread regarding "How to North Americanize Your Sat List". This can be a tedious task, but it isn't anything that requires a huge amount of technical prowess. It is simply dull, repititious and time consuming.

If you are setting up both Ku and C band systems to run on the one AZBox, you will want to utilize the strategy outlined in the instructions for "How to N.A. Your List". To cut to the chase here, if there are two satellites at the same orbital location and one is Ku and one is C-band, you can develope them in your AZBox list using the same orbital degree slot, but distinguish between the two by naming them uniquely (like Ice presented concerning AMC 21 @ 125.0°W for Ku and G14 @ 125.0°W for C-band). It is acceptable for these two sats to share the same orbital location, you just have to separate them in the list by giving each sat their own specific name. Then you may set the LNBF parameters to define one sat as Ku band and one sat as C band and this will require two LNBFs.

If you are using a motor, when you switch between the two sats, the motor will not move, but the electronics will switch between one LNBF and the other.

If you don't like keeping track of the official satellite names, all you need to do is name the sats by degree and band... i.e. "125.0°W Ku" and "125.0°W C".

Hope this is making sense for you.

RADAR
 
stargaze

stargaze

SatelliteGuys Pro
Jul 14, 2010
916
56
Out there somewhere
The only problem with using the degree and band versus the actual name is when someone says, "this is on AMC-18" then you have a fun time trying to figure it out.
Having the actual name and the degree is way better in my book any day. As far a C/ku those initials can be added also for your band on each satellite. I've done it for each N/A sat that way and it works like a charm for when things pop up down the road and once done you know that the task was done properly and won't need changing later on.
After all your into this to watch FTA not fiddle every day with making changes to your receiver and rarely getting the time to watch anything on your telly!
 

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