wt is POLARIZATION?

your question is a bit vague

if you are referring to antennae then it refers to whether the antenna is say ...
vertically polarised, horizontal, circular (left or right) etc
read some antenna books :)

if you are referring to something else then you need to ask your question a bit better so we all can understand what you are asking about

cheers
Dave
VK2TDN

he DAVENN....can u tell me that can we consider -40dB to -70dB as the good Rx LEVEL RANGE when we r on DRIVE TEST of a NETWORK?