[aprssig] High speed modems?

Andrew Rich vk4tec at tech-software.net
Tue Jul 19 08:56:55 CDT 2016


Why do we keep having these conversations .

Just do it and stop talking about it 

-----------------------------
Sent from my iPhone
Andrew Rich
vk4tec at tech-software.net
www.tech-software.net
0419 738 223

> On 19 Jul 2016, at 04:26, John D. Hays via aprssig <aprssig at tapr.org> wrote:
> 
> For backhaul and point-to-point, the work at http://hamwan.org is well worth understanding.
> 
>> On Mon, Jul 18, 2016 at 10:15 AM, Greg D via aprssig <aprssig at tapr.org> wrote:
>> How far do you need to go?  Does it really need to be on VHF/UHF channels?
>> 
>> I'm wondering if 2.4ghz Wi-Fi could be used instead?  Something like
>> http://www.broadband-hamnet.org/ perhaps, or just set up some gain
>> antennas for a back-haul point to point connection.
>> 
>> Greg  KO6TH
>> 
>> 
>> SARTrack Admin via aprssig wrote:
>> > This is a bit off topic, but I have been asked (and not for the first
>> > time) if there is a way to do emergency communications on VHF/UHF at
>> > reasonably medium to higher speed.
>> > My SARTrack software can do some of the work via APRS, but due to the
>> > connectionless state, it is not very suitable for reliabe transfer of
>> > critical data, and it is way to slow.
>> >
>> > I have users who are now looking at DMR for data transfers (because
>> > they already use commercial DMR radios for Voice and GPS location
>> > data) but these radios are by default very narrow-band, and are aiming
>> > more towards the 6.26 kc bandwidth than to 25 kb bandwidth, let alone
>> > more.
>> >
>> > What we really need is a fully digital VHF or UHF radio modem, which
>> > enables us to do make one-to-one connections, and possibly some kind
>> > of one-to-many data transfers.
>> >
>> > Looking at the TAPR website, most of the things I find there are very
>> > old.  I would like to find some kind of system which uses the latest
>> > technologies to get the most data over a bandwidth which can still be
>> > used in VHF/UHF.
>> >
>> > If there is a mailing list more suitable for this topic, please let me
>> > know.
>> >
>> > Thanks,
>> >
>> > Bart ZL4FOX
>> > http://www.sartrack.nz/
>> >
>> 
>> _______________________________________________
>> aprssig mailing list
>> aprssig at tapr.org
>> http://www.tapr.org/mailman/listinfo/aprssig
> 
> 
> 
> -- 
> 
> John D. Hays
> K7VE
> PO Box 1223, Edmonds, WA 98020-1223
>    
> 
> _______________________________________________
> aprssig mailing list
> aprssig at tapr.org
> http://www.tapr.org/mailman/listinfo/aprssig
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://www.tapr.org/pipermail/aprssig/attachments/20160719/289527e8/attachment.html>


More information about the aprssig mailing list