The "-81-" part is a bit unclear. It could be a version number, a regional code (like DVB-S/DVB-S2), or even a typo. Maybe it's related to a specific satellite frequency, like 81E or 81W, which are common satellite positions. Alternatively, it could be part of a naming convention for different configurations or regions.
The user might need advice on where to safely download it from, but I can't recommend sites. They might also need help with extracting the .rar file and using it with their device. There's also the possibility of security concerns with downloading files from unknown sources. Telechargement- GX 6605S Channels file.rar -81-...
The user might be asking for an article that discusses this download or provides information about using the channels file for the GX 6605S. Alternatively, they could be looking to download the file themselves but are unsure how or concerned about the legitimacy. The "-81-" part is a bit unclear