There have been several threads in the past where I and others have been trying to figure out just what the Network Scan on the Fortec receivers actually does, as it doesn't seem to do what the manual says that it does. I have done network scans dozens of times, and it always seems to do the same thing as a transponder scan.
Well today, I think I finally figured it out. I was experimenting on
IA5, and deleted all the channels on that sat, then did a transponder scan on one of the
Globecast transponders. It came up with about 11 programs, ie everything on that one transponder. Then I decided to try a network scan. Well what it did, apparently, was look at the NIT information on the transponder I was scanning, which had information about several other transponders on that satellite. So instead of just scanning that one transponder, it basically scanned all the
Globecast transponders on that satellite, although actually, in my case, it was only able to access the particular polarity I was on since I'm slaved. So it came up with about 55 different channels, instead of only the 11 on the transponder I was actually scanning.
I think I have done network scans on this sat before, however I've never deleted the channels first before, so I never noticed that it was looking at more than 1 transponder.
I'm curious about whether it actually gets the freq/SR data from the NIT, or if it just tries different transponders already saved, so tomorrow, I'm going to try this again, but delete all my transponders first.
In any event, this probably wouldn't do anything on a transponder that doesn't have an NIT, or correct data in the NIT (many transponders have incorrect data or no data or no NIT), but for networks like Globecast, I guess it's a quick way to keep the whole network current.
Linear Mode
