Hi All
Looking for a Radio Modem  for APM, Preferred long range but not necessary (any  with 1km+ would do). This is needed for some college students project. If anyone have a good deal PLEASE CONTACT ME ON 09414157519 or PM me

i dont know of radio MODEM. but i do have a radio transmitter and reciever available.

http://www.rcindia.org/for-sale/hk60f-2-4-ghz-radio-for-sale/msg136196/#new

Many Thanks for the reply & sorry for the delay. I am actually looking for a data radio not control radio.
Once again Many thanks & Have A Nice Time

You can use Xbee pro with APM
https://code.google.com/p/arducopter/wiki/APM2Wireless

Here you can buy Xbee pro in India.
http://www.rhydolabz.com/index.php?main_page=product_info&cPath=130_133&products_id=827

My personal suggestion is but 3DR radio if possible. It performs better than Xbee.

This is all you would need.... much longer distance than Xbee
http://www.rctimer.com/index.php?gOo=goods_details.dwt&goodsid=834&productname=

Many Thanks For The Suggestions. I hope this will solve the purpose.

One more thing I would like to know if anyone has imported these earlier, are the customs problem for these as in case of our RC controllers?