Actually, I do think that they prohibit you sending "real" data such as
temperature, humidity, or any measurement of a real quantity on that band.
I know that sounds really weird, but I saw it written up in an app note on
the FCC regs by (IIRC) Linx Technologies. Check out their site.

Sean

At 11:44 AM 4/16/02 -0400, you wrote:
>The FCC rules don't prohibit sending data at 400MHz but, they do limit you
>to sending data only once every 10 seconds and with a transmission duration
>of less than 1 second, IIRC.
>
>Paul
>
> > -----Original Message-----
> > From: pic microcontroller discussion list
> > [mailto:PICLIST@MITVMA.MIT.EDU]On Behalf Of Micro Eng
> > Sent: Tuesday, April 16, 2002 9:49 AM
> > To: PICLIST@MITVMA.MIT.EDU
> > Subject: Re: [EE] Wireless links & PICs
> >
> >
> > The original poster mentioned something about FCC regs that
> > prohibited temp,
> > etc data to be sent in the 400MHz band.  Is that true? Andrew?
>
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