Dr. Chris....
It would seem to me that you could form up your own data packets within the
PIC and then send those packets (frames) to a centeral gathering or server
site - be it feet or miles away. Depends, of course, on your RF power - and
I'm assuming it is slow.
Packet radio uses frames similar to X25 frames: [header, addressing, data,
check sum.] This way, the server can check on the integrity of the data.
You can obtain a copy of the AX25 spec (Amateur Packet-Radio Link Layer
Protocol, Version 2.-0, Oct. 1984) from the ARRL, 860-666-1541.
Other block frame protocols also exist. See most digital communications
texts.
Phil
If you wanted to test this idea without coding first, buy a KPC-3+ pair or
radio modems from AES Milwauke or HRO Anaheim. I was a part of the KPC-3+
design team.
On Monday, June 12, 2000 8:30 PM, Dr. Chris Kirtley [SMTP:.....kirtleyKILLspam
.....CUA.EDU]
wrote:
{Quote hidden}> Dear all,
>
> I'm planning to use a 16F84 to take data from four sensors and output
> them to a miniature RF telemetry unit (Linx LC418). The latter is
> carrier wave modulated, so I'll need to digitally encode the data. Has
> anyone out there done this? If so can you give me any tips - e.g. what
> encoders are available. Do I even need one if I have a PIC? Space is at
> a premium!
>
> TIA!
>
> Chris
> --
> Dr. Chris Kirtley MD PhD
> Associate Professor
> HomeCare Technologies for the 21st Century (Whitaker Foundation)
> NIDRR Rehabilitation Engineering Research Center on TeleRehabilitation
> Dept. of Biomedical Engineering, Pangborn 105B
> Catholic University of America
> 620 Michigan Ave NE
> Washington, DC 20064
> Tel. 202-319-6247, fax 202-319-4287
> Email:
EraseMEkirtleyspam_OUT
TakeThisOuTcua.edu
>
http://engineering.cua.edu/biomedical
>
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