The following table shows the relationship between downstream attenuation and potential connection speed on a low noise line:
Attenuation.............Approximate Line Length............Potential Connection Speed
32db...................................2.3km.....................................16000kbps
35db...................................2.5km.....................................14500kbps
40db...................................2.9km.....................................11800kbps
45db...................................3.2km.......................................8500kbps
50db...................................3.6km.......................................6500kbps
55db...................................4.0km.......................................4500kbps
60db...................................4.3km.......................................3200kbps
65db...................................4.7km.......................................2000kbps
Hope that helps you
Cheers
Adge
Summer turning into autumn makes me realise .... Even darker skies , They are approaching .