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I need to transmit a string of message between two Radio frequency transmitter. The message will be stored a microcontroller (e.g. 8051). How to go about writing a program for it and how to interface between the micrcontroller and the transmitters. I am still an amauteur when comes to embeded programming. Any source code or info on this ?
Hi Christo. My personal favorite wireless unit is from a company called MicroHard in Calgary. They make a 900MHz unit with up to 1 Watt of transmit power. http://www.microhardcorp.com/products_oem_compactrf.htm We just did some range tests with it and we can easily go a 1/2 Km at 0.1 Watt (line of sight). And we could probably go several Km with the proper antenna hardware at 1W. It is not cheap though...about 750$ a pair + Antennas. Have also used the Linx Wireless SC-PA but find it rather weak for what we do. It is however very low cost (30-50$ range) http://www.linxtechnologies.com/ldocs/pdfs/scpamanual.pdf Both these are license free and precertified (and therefore require no FCC certification). Will look at the Aurel part you are using.
Hi Manoj Do you have any circuit idea for transmitter/receiver module. Or any module available in India for hobby projets. Thanks
our teacher told us to search for a simple project that 8051 could be apply..just a simple projects that is not costly...affordable for the students can you give and example of this project?can you send me?
"our teacher told us to search ... can you send me?" Let's just read that again - who is supposed to be doing the searching: "our teacher told us to search" So off you go - get searching!
If you want a one-watt radio but don't want to pay the killer prices that some companies have to offer, check out MaxStream's new 9XTend. This wireless radio modem has a full one-watt of power (not pseudo-conducted one-watt trash like some other companies). This allows for up to four watts conducted output which is still allowable by the FCC without a license. MaxStream claims that you can get up to 40 miles of line-of-sight range with a high gain antenna. The development kit costs like $500, but since it is new the price will probably come down. Everything that I have read about this new radio sounds like MaxStream knows what they are doing. You can see their stuff at http://www.maxstream.net.