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[aprssig] New and playing

Bob Gould bobg575 at yahoo.com
Thu Nov 18 17:19:32 UTC 2004


William,

One thing that aslo has to be remembered when
operating APRS is that you have an effective range of
only 1/2 to 1/3 that of what you would communicate via
voice. There is no error correction in the transmition
that could correct any bad packets. That means if the
digi does not receive your info correctly, it will not
show the report. 
The advise of more power is good and another thing
that works well with the low power approach such as
using a handheld, is increasing your report rate.
Instead of 20 minute or 30 minutes, move it up to
something like 10 minutes or less. Keep in mind though
that if you get into an area that has good coverage
you should change the rate back.

N1WJO
Bob

--- William McKeehan <mckeehan at mckeehan.homeip.net>
wrote:

> I am new to APRS (and relatively new to HAM). I got
> started with APRS by
> watching things via an internet feed and was pretty
> pleased with what I was
> seeing.
> 
> So last week, I got myself a TinyTrak3 and put
> myself on the air with a 5.5
> watt HT. After working with some issues of noise,
> etc., I began to sometimes
> see myself via the internet.
> 
> Once I got things working, I started doing a bit of
> testing to see exactly how
> this thing is going to work for me. The results have
> been interesting. I have
> been in Memphis since Monday morning and have had my
> tracker running when I am
> mobile and some of the time when I am sitting still.
> My path is set to RELAY,
> WIDE2-2. My ability to get packets to the internet
> is very intermittent. Thus
> the ability to remotely monitor my position is
> limited.
> 
> One thing that I really wanted to do with APRS is
> generate maps from my
> off-road trips. The length of the trips is generally
> longer than the tracklog
> in my GPS unit would hold, so I need an alternative
> storage location. Putting
> a laptop in the jeep was my first idea, but with one
> roll-over under my belt,
> the passenger seat is not the safest place for a
> laptop to ride. So I thought
> that APRS would let me sit up a laptop in a remote
> location, use APRS to send
> the location of the jeep to the laptop and let the
> laptop do the recording.
> 
> Given my testing over the past couple of weeks, it
> looks like I will need to
> put the laptop in simplex range of the jeep in order
> to reliably capture
> information. Given the tendency of the jeep trails
> to be remote, this will not
> be easy.
> 
> Is there something that I am missing or is this
> about what I can expect from
> APRS?
> 
> -- 
> William McKeehan
> KI4HDU
> Internet: mckeehan at mckeehan.homeip.net
> http://mckeehan.homeip.net
> 
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>
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> 



		
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