[OZAPRS] What's Happened to HF APRS in VK?

[Richard Hoskin]

Hi Brian / Chris

Thanks for the update.

We initialy used 30mtrs for APRS here to get HF APRS up and running but
found the same problems as yourself with 'close in' stations so we set up
a
40mtr APRS network as well. This combination works very well for near and
far APRS communications on HF.

The frequancies chosen were based on limited local knowledge for 40mtrs
hence 7.039Mhz but we do get some 'interferance' on this frequancy from a
BBS in NSW. We used 10.149Mhz as it appeard not to be used localy and did
not feel comftable using 10.151Mhz as it was too close to the band edge
and
this became confusing for most operators.

 I beleive it would be great to have a Nationally agreed APRS frequancy
for
both 30mts and 40 mtrs.

What we do need for HF APRS is a consistant reliable system National where
base Gate stations are running 24*7 365 days of the year. Once that
happens
and the HF network is avalible you will find that mobile HF APRS stations
will start to appear. We also need a Good User Guide on how to set you
your
path, Posit TX timing and transmission lengths etc. Taking into account
the
slower data rates and band conditions etc. Chris's web page is a good
starting point.

VK3BYD-15 is anticipating the VK4DMI to be operational on 30mtrs for
testing
when he is back on air.

Cheers
Richard
VK3JFK


----- Original Message ----- 
From: "Brian Beamish" <bbeamish at bigpond.net.au>
To: "Richard Hoskin" <lhoskin at bigpond.com>; <ozaprs at marconi.ics.mq.edu.au>
Sent: Sunday, October 12, 2003 6:02 PM
Subject: RE: [OZAPRS] What's Happened to HF APRS in VK?


> Hi Richard
>
> If VK4DMI is operating on 30m that is fine for VK3BYD-15 but certainly
no
> good for any near local (to VK4DMI) station operating mobile on 30m HF
as
to
> my limited knowledge there is no 30m station operating that VK4 has
access
> to.
>
> VK4DMI as far as I am aware has moved to 40m 7.036 LSB (Cannot operate
7.039
> LSB due to local interference) to allow more local VK4 HF Mobile
stations
to
> at least get some coverage.
>
> We were starting to get some interest from a couple of local stations
> prepared to come up on HF mobile but it looks like they have given up as
> they were getting no where on 30m VK4DMI being far to close to them as
the
> signal/skip was going right over the top this is why he has been
considering
> moving to and staying on 40m.
>
> I feel though that once other 30m stations were operating VK4DMI would
> consider moving to 30m again..
>
> I personally would love to see a 30m network setup as it worked so good
> during my 10 day trip south as far as Nowra and back the inland route,
with
> both VK4 and VK3 on 30m I was tracked at least 95% if not more all the
way
> on the 3000km plus trip.
>
> Hope you can get yours set up again soon.
>
> B C N U
> Brian VK4BBS
>
>
>
>
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