I use this schedule put out by the Coast Guard. The
China Lake times are from April thru Sept, mornings
and afternoons PDT.

http://www.navcen.uscg.gov/gps/gpsno...terference.pdf

Rick 'CL'

At 04:24 23 October 2007, Waltwx wrote:
On Sep 10, 7:29 pm, 'P. Corbett ' wrote:
Today (Sept 10 2007), I experienced an intermittent
GPS outage, about 50
NM southwest of China lake, CA. The longest duration
was about 15
minutes. There were several shorter ones as well.
I know that the Navy
at China Lake has announced that this can occur from
time to time.

Does anyone know if there is a schedule for these?
Are they logged so
after the fact, the public can tell if they were jamming
and therefore
the GPS receiver is not at fault?

Paul
ZZ

Hi Paul,

I recall hearing about some higher power GPS testing
that went on at
China Lake around that time period. It was for about
3-4 weeks, I
believe. The info came from the Military Operations
Specialist (MOS)
at ZLA (Los Angeles) ARTCC where I listen in on the
morning 8am stand
up briefings. GPS testing is frequently NOTAMed for
China Lake and
other areas like White Sands. But, during this period,
the testing was
for stronger jamming. The MOS mentioned that they should
be contacted
by controllers receiving loss of GPS reports from pilots.
She/he would
then have contacted the testers to turn it off.

Yes, there are schedules for the GPS testing in the
NOTAMS. Don't know
if this higher power testing was mentioned, though,
in the NOTAMS.

Walt Rogers
MIC Los Angeles Center Weather Service Unit... Palmdale,
CA