Sending data over 300-400 m?

[psmeets]

I want to make a PIC based wireless network where microcontrollers communicate with eachother. How to deal with interference? Which ready-for-use OEM modules can I buy? Any suggestions, tips of links?

 

[tdk]

Hi psmeets

Note that Microchip has a range MPUs call RF-PIC very nice for such
applications.

My regards

 

[MonkeyBusiness]

Hi,

Reaching 300 to 400 meters particularly with no line of sight will almost surely force you to transmit more power than is allowed without license, to get a reasonable data rate.
If you can accept a low data rate then you may try something like TR1000 from RFM or TRF6901 from TI.

 

[kanta]

Hi
I dont know if it will be of any use to you , but i made it with LPD device.
Unfortunately i didnt use any MCU cause i cant program. Instead i used
Motorola`s MC145026 and MC145027.
I think that this is perfect solution because it can work up to 1km , but if you need more you can allso use PMR device which has 500mW (2~3km) output power and it is very cheap.
Hope that helped you.

 

[koky]

you can use a LPD transciever with fsk modem chip. You can take suggest from
hxxp://www.lorix.com/cat055_l2.php?n=1