What is Network Search

[ayelvington]

and why do I care? All of my receivers mention "network search", but none of the documentation clarifies what it is and why I care.

What is it? Why do I care?

Al

[rainman]

Originally Posted by ayelvington

and why do I care? All of my receivers mention "network search", but none of the documentation clarifies what it is and why I care.

What is it? Why do I care?

Al

network search searches the transponder already stored in your receiver.it works best for finding sats as long as the TP's loaded in the receiver is up to date.

[Sadoun]

Network search basically uses some of the information included with the transponder to locate, store, and then scan for new channels.

Lets say, company ABC owns 5 transponder on a satellite. But out of the 5, your receiver has only on transponder saved in it by the factory. If company ABC includes information that it has 5 total transponders with its datastream, the receiver will get that information and save it to your receive.

[Muad'Dib]

Network Search normally relates to the NIT, which comes transmitted with some transponder info data combined.
Eg. if new transponders get activated, the sat hoster will include that data into the NIT of some transponders...

[ayelvington]

Thank you to all! This is great stuff, and all would have been nice to read in just one of the manuals.

Think snow!

Al

[wejones]

Originally Posted by Muad'Dib

Network Search normally relates to the NIT, which comes transmitted with some transponder info data combined.
Eg. if new transponders get activated, the sat hoster will include that data into the NIT of some transponders...

THis is correct.
However, at least over here in North America, very often the NIT doesn't have correct information in it, ie they have non-existant transponders listed on non-existant satellites. About the only satellites that have good NIT info that's useful are those Globecast sats on G25, and the Dishnet and Nimiq sats, and I think those Equity (or whatever they're called) sats on G10. So on those sats, it can be useful, however on other sats, if there is NIT info, it's probably going to just make your scan take longer without finding any additional channels, because when it finds an NIT with incorrect info, it will waste time looking on transponders that aren't there. I usually either do a power scan, or do a simple transponder scan.

I *THINK* that the NIT is also where some of these receivers get the info about what sat the receiver *THINKS* it's on. Ie if you move your dish to a satellite, and the receiver locks on a transponder, and finds a NIT stream that *SAYS* that it is on some satellite, some receivers pop up an indicator saying what sat you're on, which is often wrong, because as often as not, the NIT info is not correct on most transponders. It's something that the uplinkers have to input themselves, and many don't bother putting the correct info there.

Anyway, I think the network scan is a waste of time, unless you're on G25, or perhaps G10.

[wejones]

I didn't want to further clog up this thread with info that most people wouldn't care about, so I put some additional info showing TSREADER screenshots of NIT info in another thread, at
http://www.sadoun.net/forums/free-ai...html#post53765

Note, I was wrong about the NIT info on G10 being useful, but the G25 Globecast transponders do seem to have useful NIT info.
I also checked the PBS channels on AMC3, and they don't have any NIT info.
Most transponders on north american sats don't have useful NIT info.

[Muad'Dib]

True, some receivers have stored the frequencies with NIT info for each and every satellite position stored in their firmware/settings.