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Old May 5th 19, 06:06 PM posted to rec.aviation.soaring
Dan Marotta
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Posts: 4,601
Default Implausible Time Records

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