[drats_users] gps ???

[Francis Miele]

I don't know enough to intelligently discuss the data issue, but it seems to
me that if dprs and other apps can correctly decipher the data, it must be
getting thru correctly. I don't recall having this issue when I tried drats
last year.

--
Fran, W1FJM





On Wed, Aug 11, 2010 at 6:20 PM, Dan Smith <dsmith at danplanet.com> wrote:

> > I tested this on my XP machine with the same results. I did not get a
> > chance to test simplex, but I was only two miles away from the repeater
> > and I was never identified with my call sign by drats.
>
> For what it's worth, proximity to the repeater really has no correlation
> to whether or not you are getting in cleanly.  Multipath can completely
> trash the signal even if you have plenty of it.
>
> The other thing to remember is that the quality of the voice portion of
> the D-STAR signal tells you absolutely nothing about the quality of the
> data part.  The voice stream has a huge FEC stream to back it up and
> "fix" it on the other end.  The data stream has no such help and only
> one bad byte every second will make it nearly useless.
>
> When we used to do exercises and training here locally, we would do so
> in a meeting room at the local fire station.  Even being ten feet or
> less from each other using handhelds, we would get plenty of corruption
> of the data signal making it very challenging at times to get anything
> done.
>
> Just something to keep in mind :)
>
> --
> Dan Smith
> www.danplanet.com
> KK7DS
>
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