CyberOLi
Member
- Joined
- Jan 21, 2009
- Messages
- 2
- Reaction score
- 0
- Points
- 0
- Age
- 43
- My Satellite Setup
- I don't have any satellite installation. I install satellite equipment for a company.
- My Location
- Belgium
Hello there,
I don't know if it is the right section to post in but i didn't find a better one so ;).
I work for a company that provides Internet access for mobile environment. For this we use a satellite link to provide a two directions access to the Internet. I have recently installed an equipment using a SCPC channel for prototype purpose.
On the forward link there is no problem whereas on the return link that's another story. When everything goes well, it works good 5Eb/No on the return link of 10 d
BUT sometimes the link is very unstable: the HUB modem sees an Eb/No fluctuating between 0 and 4 dB over a long period of time. At same time we can hear the repetitive sync and unsync of the modem. It stays like that over a large period of time and then the problem is fixed on its own. After having done a inspection of the installation in the HUB, i can tell that the problem is not coming from there. The problem is coming from the mobile unit on the ascending return link.
I am just wondering if some guys here around have already experienced that kind of problem and if yes what was the cause of it?
I know that i could change the terminals and do a "environmental noise" analysis but i am a bit far from there so perhaps there is another solution.
The more insights i get, the best it is.
In advance thank you.
I don't know if it is the right section to post in but i didn't find a better one so ;).
I work for a company that provides Internet access for mobile environment. For this we use a satellite link to provide a two directions access to the Internet. I have recently installed an equipment using a SCPC channel for prototype purpose.
On the forward link there is no problem whereas on the return link that's another story. When everything goes well, it works good 5Eb/No on the return link of 10 d
BUT sometimes the link is very unstable: the HUB modem sees an Eb/No fluctuating between 0 and 4 dB over a long period of time. At same time we can hear the repetitive sync and unsync of the modem. It stays like that over a large period of time and then the problem is fixed on its own. After having done a inspection of the installation in the HUB, i can tell that the problem is not coming from there. The problem is coming from the mobile unit on the ascending return link. I am just wondering if some guys here around have already experienced that kind of problem and if yes what was the cause of it?
I know that i could change the terminals and do a "environmental noise" analysis but i am a bit far from there so perhaps there is another solution.
The more insights i get, the best it is.
In advance thank you.
