Model tuning experts

My friends, did you work in model tuning projects???
If yes, and using Aircom_Asset tool

Please tell me for urgent: what did you do with the through clutter loss (dB/km) and clutter offset (dB)? What ‘s the concept of editing these parameters? When I should give it negative and positive values? What does it mean?

Looking forward for your response ASAP

Hi …
Any one can u share above? I have problem with it too.
Thanks

see this link

http://www.5inetop.cn/viewthread.php?tid=1286&pid=24324&page=1&extra=page%3D2#pid24324