Rain fade signal?

[blockisle9]

Whats the lowest signal you can have before having any problems?
Its raining pretty good now and my signal on the following satellites range from about 68 to 80-
119 transponder 11
119 transponder 12
110 transponder 11
110 transponder 12
Thanks!

 

[ShadowEKU]

Ive had little to no break ups as low as 55 any lower and the breakups start... then the loss of signal.