[OZAPRS] Higher beacon rate HF versus VHF?

[Richard Hoskin]

Yes the 30mtr APRS HF network has worked very well for us since the
introduction of the Darwin and Perth Gates a few years ago.

If anyone is interested in the US experience for HF APRS read
http://wa8lmf.net/bruninga/APRS-docs/HF.TXT

Cheers
Richard
VK3JFK
 

> -----Original Message-----
> From: Ray Wells [mailto:vk2tv at exemail.com.au]
> Sent: Monday, 30 March 2009 9:09 PM
> To: vk3jfk at wia.org.au; Australian APRS Users
> Subject: Re: [OZAPRS] Higher beacon rate HF versus VHF?
> 
> I think the HF network also has a proven record, again, based on agreed
> standards.
> 
> Ray vk2tv
> 
> Richard Hoskin wrote:
> > Hi Dave,
> >
> > I'm not really asking for agreement.
> >
> > I was pointing out the recommended mobile HF beacon rate world standard
> that
> > has been in place for over 15 years, and the reasons why.
> >
> > We have a very good VHF APRS Network in Australia that is based on
> standards
> > and cooperation.
> >
> > Cheers
> > Richard
> > VK3JFK
> >
> >
> >> -----Original Message-----
> >> From: ozaprs-bounces at aprs.net.au [mailto:ozaprs-bounces at aprs.net.au] On
> >> Behalf Of David and Justine Olsen
> >> Sent: Monday, 30 March 2009 8:12 PM
> >> To: Australian APRS Users
> >> Subject: Re: [OZAPRS] Higher beacon rate HF versus VHF?
> >>
> >> Richard,
> >>
> >> I am not sure I agree <snip snip>
> >>
> >>
> >>> this results in a maximum of 7 stations being able to transmit per
> >>> minute.
> >>>
> >> You sure? They can transmit all they like. Given the poor Rx success
> >> rate, they aren't going to cause a whole lot of problems if they
> >> aren't heard by anyone.
> >>
> >>
> >>> Lets see, HF APRS increases the coverage area from roughly 200,000
> >>> Sq Km
> >>> using 3 hops to potentially 75 Million SQ KM.
> >>>
> >>
> >> Australia is different to elsewhere most that space has nobody in it.
> >>
> >>
> >>
> >>> the maximum number of
> >>> stations that can be in a single APRS Gate's coverage area is 70
> >>> stations.
> >>>
> >> I wonder how many times you have seen 70 HF stations on APRS at once,
> >> let alone in one iGate's coverage area.
> >>
> >>
> >> David
> >> VK4MDX
> >> _______________________________________________
> >> Ozaprs mailing list
> >> Ozaprs at aprs.net.au
> >> http://aprs.net.au/mailman/listinfo/ozaprs
> >>
> >
> > _______________________________________________
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> > Ozaprs at aprs.net.au
> > http://aprs.net.au/mailman/listinfo/ozaprs
> >
> >

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