I have rb433ah with r52n-M signal is -55/-53...when I change it for x86 and rb14 with the same cable, same cards, same pigtails, same antena....the signal is -80-79...I tryed different rb14, different minipci cards..same problem.
Can be this problem of motherboard? Chipset? Power?

I have not used rb14 to much, but on rb502 You will have a power issue using 12V, and all mini mci cards on the main and expansion card. We have make a proporitary exstention cards, giving the minipci external power, to solve this issue.

pleasu could you draw some scheme what to use and how...to power it external? Thanks