On Friday, July 3, 2015 at 8:00:52 AM UTC-7, Matt Herron Jr. wrote:
On Thursday, July 2, 2015 at 10:12:49 PM UTC-7, jfitch wrote:
I am getting this bitching Betty alarm every so often. It may do it for a minute or so, then goes away, then comes again.

Looking at the Flarm IGC file, there are comment lines that look like this:

LFLA213757GPS 7 45

Which I believe represents GPS status (7 satellites?)

Then I get some that look like this:

LFLA213857GPS 0 0

No satellites? The B field time stamps show a lat and long 4 seconds before and 4 seconds after. In the flight today I got 14 of these and about that many warnings (I didn't count the warnings).

This didn't happen last year, started coincident with the 6.0.2 firmware "upgrade".

Can anyone shed any light on this? Can't find any spec from Flarm that describes it.

was there military GPS jamming going on at the time?. I got lots of dropouts and a blackout for 40 minutes near mono lake last week. My backup Oudie GPS also showed dropouts.

Matt

In the Flarm IGC file there appear to be no skipped Lat Long records around these messages. Time correlating to the Air Av IGC log, at each of the instances there are no missing fixes.

My guess is that it is a Air (Butterfly) vario thing. The Flarm NMEA stream must have changed to introduce some new stuff at the 6.0 change, and the vario is choosing to warn about things that might be better unsaid. But I was trying to get more info on the PowerFlarm first.