i m using tl-wn650g pci card and its detect in mikrotik and i have one omni antenna which is in AP mode and its not mikrotik product and at station side i m firstly using D-Link AP Client product its working good.after i install mikrotik in pc and incest this tl-wn650g pci card and joint pig-tel my Rf cable length 30m and i configure it and after i put this card on station mode and search i got my omni but signal -90 dbm so i and also i cant get ping so what the problem and after i put same RF in D-link its working and i got 97 % percent signal so what the problem .....or its not practical tell me..
problem it that if same setup only remove RF and put in D-link 1000AP+ product its working properly
mikrotik router pc based x86,
tl-wn650g pci card,
30m RF cabal and
24 dbi parabolic antenna ,
distance 800m
so please tell me

I'm trying to understand...but I see you use 30m pigtail
don't use more than 2-3m.

ok thanks for reply but i but after your reply i add 2 m pig tel and add but i got only -88 dbm in 800m range so what can i do

use google.translate.com , I don't understand.