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View Full Version : Difference between result of link planning with Pathloss 4 and 5


mohamad
12-14-2009, 07:50 AM
Dear all friends,
I designed a MW radio link with Pathloss 4.0 and 5.0 but I achieved different results.
In pathloss 4.0 , fade occurance factor with ITU-R P.530-7/8 is more than fade occurance factor with ITU-R P.530-9/12 but in pathloss 5.0 is inverse.
The problem is that in link budget calculations with ITU-R P.530-7/8 and pathloss 4.0, SESR objective isn't satisfied but in same link budget with ITU-R P.530-7/8 and pathloss 5.0 is satisfied.
What is the reason of this diffrence?

Best Regards,

Mohamad