At 06:24 20 September 2005, Jancsika wrote:
Eric Greenwell wrote:

Jancsika wrote:

Or any other cheap mouse type GPS. The final igc
file will be fine
This badge&cheap GPS issue come up year by year.
Few enthusiastic
pilot joined and created COTS proposal to IGC but
nothing has
changed so far




Like it, or not, if one wants to get a badge with
an EW, one must use
one of the Garmin GPS units listed in the approval
document...

Marc



It's just funny to see the weakness of the system...


It's my understanding the IGC file will NOT be fine
if a mouse type GPS
is used, because it will be missing the NMEA sentence
with the datum
that is in use. With a Garmin GPS, the sentence is
not sent only when
the datum is changed, but with every data point.

I also suspect the Garmin GPS sends a sentence identifying
itself, which
is recorded in the file, but I don't know that for
sure. Perhaps Marc or
other knowledgeable person can comment?



At startup some GPS sends (even a cheap mouse type
could do it) this
data but to get a valid IGC file boot messages doesn't
have to be in the
NMEA stream. I sent you one example (Vali-ewa.exe validated
this).
Regards,

/Janos


Here we go again. Vali-ewa.exe only checks the hash
of the file against the G line, if there are no datum
records in the file your OO or the NAC's badge secretary
should reject the claim.