FM Transceiver board

[trevorW]

Im interested in a complete FM Transceiver board that I could attach
to some 8 or 16 bit microcomputer chip. I want to build some simple
and cheap embedded devices that talk to each other using digital comm.
The app is a low baud rate comm of some kind, but with a good number
of units communicating with one another.

Any board, chip, or URLS which helps out would be greatly
appreciated.

[george]

Two alternatives both using very few external components, one
designed for 433MHz the other is programable between 300 to
500MHz
The Nordic RF-chip: http://www.nvlsi.no/nRF0433frame.htm
The other one:
http://www.chipcon.com/components/produ ... hoved.html

[zizka]

That's a pretty wide spec.

There are a lot of radios in the industry that you could use, but a lot comes down to your range, and how much "intelligence" you're expecting in the radio (as opposed to it being in the code on your processor)

I'd start with a module (rather than a chip: less rf design risk), and then decide if you are going to write the baseband interface yourself (lowest cost option, requires good coding skills, use a simple 'raw interface' transceiver like a BiM2A) or use a module with internal 'modem' functions that allow you to communicate with it via a serial 'rs232 like' port (TDL2A, Easyradio, MK Genesis) or even a simple parallel interface (SP2, RPC2A)

But the most important thing is to start experimenting !

[UTI]

Another new solution just on the market is the pic-bee to interface to the XBee radio modules. Specs are at http://www.pic-bee.com

This gives a pretty easy interface for using the modules, if you decide to go that route