900sm on a 5.2 wireless

Will a 900sm work on a 5.2 mhz wireless network

Not via RF. 900 MHz SM’s will only transmit over the RF interface to a 900 MHz AP.

is this possible also for 5700Mhz and 900Mhz put together on same place?

you can have 5.7 and 900 on the same network but wirelessly 5.7 can only talk to 5.7 and 900 to 900

yep. i got the whole idea. thanks for that. =)