#1




Modification of the chosen threshold BER (103,106,RBER) changes the thermal fade margin of the link. It seems that this figure is then used to calculate the Worst Month SESR.
The biterror probability is a function of the SNR of a link, with noise initially taken as the thermal noise floor of the receiver. BER is in turn a function of the resulting error distribution. An SES is defined (as per the ITU)in terms of the rate at which an error occurs (103 or indirectly through the rate such that 30% of blocks in a given second contain at least 1 error). Given this, I believe that Pathloss provides an accurate calculation of SESR only when 103 thresholds are used. Am I missing something  or is this an accurate deduction? Mitchell Crago 
#2




SESR Calculation method
I am not sure I understand you correctly, but it is expected that the Fade Margin would change since radios have 2 Threshholds, 103 and 106.

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