IGC File Fix for Cambridge GPS NAV?

[Jim Vincent]

I've hunted around but can't find the thread. Pointer appreciated. TIA..

Jim Vincent
CFIG
N483SZ

[David Kinsell]

"Jim Vincent" > wrote in message ...
> I've hunted around but can't find the thread. Pointer appreciated. TIA..
>
> Jim Vincent
> CFIG
> N483SZ
>

What exactly are you asking? IGC files created from gps-nav data inherently
do not and cannot have verifiable security. There's no fix for that other than
getting a newer logger. See "G record and Cambridge loggers" in this very
usenet group.

[Eric Greenwell]

Jim Vincent wrote:
> I've hunted around but can't find the thread. Pointer appreciated. TIA..

If this is for the OLC uses, try this page:

http://www.onlinecontest.org/validate-en.php?dclp=d5dfcef353a3de84d3a35954aaa4b522
AeroKurier Online Contest

It will generate a "verifiable" IGC file from your GPS Nav cai format file.
--
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Eric Greenwell
Washington State
USA

[Jim Vincent]

>What exactly are you asking? IGC files created from gps-nav data inherently
>do not and cannot have verifiable security. There's no fix for that other
>than

David, I did not closely follow the thread you mention but will now. I recall
reading one message mentioning doing the DOS fix, or something like that, and a
website somewhere that mentioned something similar.

My concern is whether the GPS NAV can still be used for badge flights ( up to
and including 1000k), not world records. I have SeeYou as my primary data
manager and would be using it to upload waypoints and tasks to the GPS NAV and
to download the flight log. I guess my question is, should I have any specific
concerns about the validity of this procedure? Thanks.

Jim Vincent
CFIG
N483SZ

[Eric Greenwell]

Jim Vincent wrote:

>>What exactly are you asking? IGC files created from gps-nav data inherently
>>do not and cannot have verifiable security. There's no fix for that other
>>than
>
>
> David, I did not closely follow the thread you mention but will now. I recall
> reading one message mentioning doing the DOS fix, or something like that, and a
> website somewhere that mentioned something similar.
>
> My concern is whether the GPS NAV can still be used for badge flights ( up to
> and including 1000k), not world records. I have SeeYou as my primary data
> manager and would be using it to upload waypoints and tasks to the GPS NAV and
> to download the flight log. I guess my question is, should I have any specific
> concerns about the validity of this procedure? Thanks.

You should be able to continue doing what you've been doing. For badge
flights with the GPS Nav, you don't need to have an IGC file. The file
(xxx.cai) produced by the GPS Nav is what the official observer (and
other officials) _must_ use to validate the flight. This is detailed in
the approval document for the unit. It's dry reading, but take a look at
it, if you haven't already.

What has changed is (or will soon) the flights for which you are allowed
to document with a GPS Nav, not the procedures or the software (like
SeeYou).

--
-----
change "netto" to "net" to email me directly

Eric Greenwell
Washington State
USA

[David Kinsell]

"Jim Vincent" > wrote in message ...
> >What exactly are you asking? IGC files created from gps-nav data inherently
> >do not and cannot have verifiable security. There's no fix for that other
> >than
>
> David, I did not closely follow the thread you mention but will now. I recall
> reading one message mentioning doing the DOS fix, or something like that, and a
> website somewhere that mentioned something similar.
>
> My concern is whether the GPS NAV can still be used for badge flights ( up to
> and including 1000k), not world records. I have SeeYou as my primary data
> manager and would be using it to upload waypoints and tasks to the GPS NAV and
> to download the flight log. I guess my question is, should I have any specific
> concerns about the validity of this procedure? Thanks.
>

There's a change effective April 1 removing world record flights from being
eligible, but that doesn't affect you. The information on approvals is readily
available at www.fai.org/gliding

You just have to remember that it's critical to include the .cai file with a badge
application. The pseudo-igc files can be created at any time, and by anybody.

One of our more prolific r.a.s contributors recently beat his head against the
wall when trying to validate igc files from a gps-nav, using SeeYou. He says
sometimes it showed valid security, sometimes it didn't. If that's true, then
there's a significant bug in SeeYou, since any igc file like that should be flagged
as invalid. You can just view .cai files directly with SeeYou and avoid the issue.

Dave

[Jim Vincent]

>
>http://www.onlinecontest.org/validate-en.php?dclp=d5dfcef353a3de84d3a3595
4aaa4b522
>AeroKurier Online Contest
>
>It will generate a "verifiable" IGC file from your GPS Nav cai format file.

Thanks Eric, that was exactly what I was looking for. And thanks to Dave too
for the additional info. Really helped!

Jim Vincent
CFIG
N483SZ