gsm mobile problem

gsm 900 frequency erro limit ?
dcs 1800 frequency erro limit ?
pcs 1900 frequency erro limit ?

Do you mean bit error rate (BER) limits at these frequencies?

Here you can find something about BER. I hope this can help!

http://motorola.8m.com/sekret9.htm

Bye
murslou

just look for GSM0505 spec

GSM : <= 90 Hz

DCS: <=180 Hz

PCS : <=190 Hz

you mean center frequency tolerance?