From one of the earlier links:
http://www.skyuser.co.uk/forum/route...explained.html
Quote:
|
Originally Posted by "Saturday" at SkyUser.co.uk
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
|
So you should get a decent speed!

[Subject to line quality, noise, etc.]
No idea about the line.