[OZAPRS] RGI/RBM/Griffith digis
Glen English VK1XX
glenlist at pacificmedia.com.au
Thu Nov 2 12:39:02 AEDT 2017
9600 mobile with no decent FEC , and heaps of LONG delay (>20uS)
multipath ????
it would go like a bucket of sh1t.. so purely for fixed stations.
of course can keep on adding channels to the dire wolf box...
-glen
On 2/11/2017 11:46 AM, Matthew Cook wrote:
> I'm thinking as a higher speed secondary service that users and fixed
> stations can listen too.
>
> I've got no idea how well UHF 9600 baud would work in a mobile
> environment with picket fencing or flutter...
>
> Just using left over bits in the shack from the good-ol packet days..
> and a rPi of course.
>
> 73
>
> Matthew
> VK5ZM
>
> On 2 November 2017 at 10:33, Glen English VK1XX
> <glenlist at pacificmedia.com.au <mailto:glenlist at pacificmedia.com.au>>
> wrote:
>
> and UHF would be easier, run 100W or something. so u are thinking as a
> distribution backbne, rather than users listening to it ?
>
>
> On 2/11/2017 10:56 AM, Matthew Cook wrote:
> > If you've got the ability why not go 9600 baud on 70cm for a APRS-IS
> > -> RF gateway. There is a channel already in the band plan for such
> > activities, nothing says it has to be 1200 baud. There are
> plenty of
> > radios out there now that can do 9600 baud, direwolf would eat
> it for
> > breakfast.
> >
> > That has been something in the back of my mind to get installed here
> > in Adelaide for a trial at some point.
> >
> > 73
> >
> > Matthew
> > VK5ZM
> >
> > On 2 November 2017 at 09:12, Glen English VK1XX
> > <glenlist at pacificmedia.com.au
> <mailto:glenlist at pacificmedia.com.au>
> <mailto:glenlist at pacificmedia.com.au
> <mailto:glenlist at pacificmedia.com.au>>>
> > wrote:
> >
> > Josh, I think the RF message forwarding could be done. That
> would
> > provide a reasonable utility for the region.
> >
> > Yeah will seek to add another transceiver channel up there,
> which is
> > actually non trivial but on the list. Maybe 7575, UHF or 6m
> dunno.
> >
> > Make the most of the super site.
> >
> > g
> >
> >
> > On 1/11/2017 5:42 PM, Josh wrote:
> > > I can't see a good reason to put an igate there, unless
> you were
> > > thinking of dropping the digipeater function altogether.
> > > There's multiple igates with reliable and fast internet
> links within
> > > RGI's footprint, so leave it to them rather than wasting your
> > limited
> > > bandwidth.
> > >
> > > But if you have the link available, setting up APRS-IS->RF
> message
> > > forwarding could be a great service addition considering the
> > range and
> > > general area that RGI covers.
> > > Bandwidth requirements would be extremely low too.
> > >
> > > - Josh VK2HFF
> > >
> > > On 1/11/2017 4:43 PM, Glen English VK1XX wrote:
> > >
> > >> The Ginini IP access, at least in the short term is a low
> > bandwidth ~
> > >> half duplex 50 kbps UHF IP bridge. good for SSH, remote
> control of
> > >> things. How many bytes (UDP payload) is the IGATE "upload"
> > >>
> > >> ?
> > >>
> > >> given the APRS UI "pollution" of 5175 , we'll probably
> put a second
> > >> channel on the direwolf and run different freq for connected
> > mode stuff
> > >> for WICEN...
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