[Fourlanders] APRS with Rovers?

[Jim Worsham]

You are correct.  Only rovers can transmit APRS.  I to was confused about
all of this talk about transmitting APRS.  Besides the self spotting issue
it seems rather pointless.  Everyone knows who and where we are.  We need to
access APRS to see the rovers.  It can be via internet (my preference if
possible because then we can also access packet cluster for spots) or direct
RF connection to a nearby digi.  I will leave it to the experts to decide
the best way to do it.

73
Jim, W4KXY

-----Original Message-----
From: fourlanders-bounces at contesting.com
[mailto:fourlanders-bounces at contesting.com] On Behalf Of Brian McCarthy
Sent: Monday, May 05, 2008 8:21 AM
To: Fourlanders
Subject: Re: [Fourlanders] APRS with Rovers?

I thought rovers were the only classification of station that was allowed to
beacon into APRS during the contest.

I expected that the W4NH use of APRS was only to watch for the rovers.
Receive only was my understanding. Beaconing would likely be counted as self
spotting.

Yes, it will be tough to hear data underneath the CQ'ing machine on 2m, but
we won't know until we try it. The hardware is easy and we might be
pleasantly surprised. The rovers are being allowed to use the mainstream
APRS channel complete with digi's. All we really need to hear is the nearest
mountaintop digi' at 6 miles away. With an optical or near optical path and
presuming the digi has a 4-6dbd antenna with 20-50w, it should be possible
to hear it quite well. If we mount a 4-el vertical beam pointed at the digi
and manage to shadow it from the main 2m array, I suspect we will hear more
or even most of the packets.

Brian
NX9O

On Sun, May 4, 2008 at 11:50 PM, Jim Worsham <wa4kxy at bellsouth.net> wrote:

> Since we are stationary I wouldn't think we would have to beacon often.
> Once an hour?
>
> 73
> Jim, W4KXY
>
> -----Original Message-----
> From: fourlanders-bounces at contesting.com
> [mailto:fourlanders-bounces at contesting.com] On Behalf Of Paul Yeager,
> ABR(R), REALTOR(R)
> Sent: Sunday, May 04, 2008 11:42 PM
> To: rfacres at gmail.com; Fourlanders
> Subject: Re: [Fourlanders] APRS with Rovers?
>
> We are working on getting internet at the Eagle's Nest Mountain repeater
> site (http://aprs.fi/?call=eglnst).  Once we have done this, a 802.11 link
> to Mile High should be easy. It might even be doable with the same antenna
> we're using to get 802.11 up to the site.
>
> However, this is not likely to be done in time for the June Contest, so it
> would be good to have alternatives available.
>
> If we have some sort of Internet connection available, we can use whatever
> we want.  If we're going to get APRS data via RF, I recommend using
> UI-View,
> as it has a built in server function.  This allows one computer that is
> attached to the APRS radio/TNC to serve APRS data to all the computers
> we're
> using.
>
> I didn't find APRS+SA as easy to sue, so I haven't played with it that
> much.
>
> I can bring a radio, TNC, yagi (so we can use minimum power) and feedline
> for this, and if needed, also a laptop.
>
> One of the great advantages I see to using APRS is that it will eliminate
> guesswork regarding antenna pointing for stations we see on APRS.
>  However,
> to provide this same feature to other sations, we need to be *seen* on
> APRS,
> and therefore need to transmit regularly.  Surely we can devise a way to
> do
> this without undue interference to our other 2M operations.  Low power and
> a
> yagi come to mind.
>
> 73 de W4SKI
>
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