Where to get FSK modulator chip like xr2206 in Pakistan?

i need a fsk modulator chip like xr2206 which is available is Pakistan.if anybody knows any such chip pls let me know.
thanks in advance.

You can use the 555 timers for the same.
Ref. the application from the Gavankar book " linear integrated circuit ".

u can get it from rawalpindi (raja bazar (college road(ic master shop)))
hope u'll get it