From: Chris Leishman (wem@ipnet.ru)
Date: Mon Jan 08 2001 - 02:33:17 EET
Charles,
Actually, I'm designing a L3 protocol and associated software to run on top of
a broadcast link-layer.
ATM I'm trying to identify hardware that is capable of:
a) doing a reasonable distance (hopefully 10km or more)
b) easily mobile - no large antenna, reasonably low power requirement (must run
on 12V)
c) not too expensive ;)
d) works with linux & AX.25
That being said, I'll have a look at the software you've been talking about
and see if they have anything (info or product) that may be of use to me.
Thanks,
Chris
On Sun, Jan 07, 2001 at 07:22:50PM -0500, Charles E. Gelm wrote:
> Hi, Chris:
>
> It sounds to me like you are looking for software or firmware.
> Software/firmware does the broadcasting.
>
> Sending radio signals over variable terrain is less affected
> by modulation [digital, cw, am, fm] than it is by hardware
> [power, elevation(30MHz and above), antenna gain].
>
> You cannot be heard on the other side of a mountain by
> changing your modulation scheme.
>
> For broadcasting of data, look up A.P.R.S.
> (Amateur Position Reporting System) and weather-node.
> These digital schemes broadcast data and can display
> data from other 'nodes.
>
> HTH, Chuck
>
> Chris Leishman wrote:
> >
> > Hi all,
> >
> > I'm looking at doing some work with packet radio for a comm's system I'm
> > prototyping (potentially for a post grad project) - and I was wondering if
> > people could suggest appropriate hardware (or tell me if I'm on the wrong
> > track).
> >
> > Basically I'm looking for something to enable broadcasting of data to any
> > other node in >10km radius over variable terain (preferably not
> > just line-of-sight stuff). Bandwidth does not have to be large. Hopefully
> > something that works with linux/AX.25. It also needs to be mobile - on both
> > land and in the air.
> >
> > Does anyone know of something that might be suitable?
> >
> > Regards,
> >
> > Chris
> >
> > ------------------------------------------------------------------------
> > Part 1.2Type: application/pgp-signature
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