Dan,
Open your file with a text editor and search for "B190338"
This will put you in the right area.
In each record, after the letter B, the next six bytes are the time.
After B190339 the time jumps back to B190337, which is odd, and leads to
there being two records with a time of 190338, and also 190339.
Odd, but I have seen this before. Maybe you can avoid it in future by
setting a longer fix interval, even 2 seconds might help, but no promises.
I am not seeing any GPS outage around that time. This would be shown by the
Letter "A" in the 25th byte changing to a "V".
Although it does not help a lot, the sequence error seems to happen as you
left the ground, so I guess you were not reversing turns?
I'm not saying this is what OLC are complaining about, just that it is odd
and it might be.
Tim.
--
At 17:06 05 May 2019, Dan Marotta wrote:
I don't see what you're seeing.ﾂ* But how could records be out of
sequence?ﾂ* Maybe because my position apparently reversed while
thermalling during a GPS outage and getting one or two hits and then
another drop out, etc.?
On 5/5/2019 10:43 AM, Tim Newport-Peace wrote:
At 16:26 05 May 2019, Dan Marotta wrote:
Yes, it was from the vario which just started acting up.ﾃつ* The
ClearNav
II display's USB stick did not have the flight.ﾃつ* I may have
neglected
to
download that.
Lately I've been getting a boatload of GPS drop outs.ﾃつ* Maybe that's
because I'm close to the source of the interference testing or maybe
it's because I've cut my antennae cables to length in my cockpit.ﾃつ*
I
now
seem to recall reading that one should not shorten the cables. I know
about reflections due to wavelength/transmission line length, but I
was
unaware that that would affect reception.ﾃつ* Do I need to acquire new
antennae?ﾃつ* The antenna that came with my PF portable was 10 meters
long!ﾃつ* Who needs a big bundle of cable under the panel?
On 5/5/2019 9:49 AM, JS wrote:
On Sunday, May 5, 2019 at 8:38:57 AM UTC-7, Dan Marotta wrote:
For my last three flights I've been getting a message from OLC
warning
of implausible time records in the igc file.ﾃつ* Does anyone know
what
this
means and what I might do to correct the problem? I've asked the
question on the ClearNav forum but haven't gotten a reply yet.
Here's a link to the file if that helps:
https://www.dropbox.com/s/erm01jilim...8Q-01.IGC?dl=0
--
Dan, 5J
Noticed it was from the vario. I'll use a vario file today and see...
Jim
--
Dan, 5J
Looking at the file, there is an out-of-sequence issue:
Checking File C:\Users\Public\Documents\GPS\2019-05-04-CNI-V8Q-01.IGC
---------------------------------------------------------------------
Out of Sequence Error -
B1903383458935N10559992WA0184701874001999104104113 000
B1903393458935N10600013WA0184901876001999112112116 000
B1903373458935N10600035WA0185101877001999115115119 000
B1903383458936N10600057WA0185301878001999119119122 000
Could this be the issue?
--
Dan, 5J