I have long been hoping the Garmin GPSmap 76S would be consided
as an IGC approved device. I usually do not enable the WAAS in my
device.
But find the 76S to be very accurate after a flight when I generate an
..igc file from the track log using GPSDump and loading it into SeeYou.
I was on a flight Sunday, in a LET-L13 in Zephyrhills, FL. I got off
tow at
3000' AGL. I had a 2.3 hr. flight. at one time during the flight I had
dropped
down to 1400' AGL, I was about to enter the pattern but found a weak
thermal and started to work it. About 50 minutes later I was at 4700'
AGL. When I landed, some club members told me they thought that
probably would have been good for a Silver Altitude. I am not sure.
That was like my 20 TH solo flight.

If The Garmins would be an IGC approved device. I would carry my 76S
on every
flight. You never know!

Carl


"Ivan Kahn" wrote in message news:hFPwb.225716$mZ5.1710772@attbi_s54...
"Tim Newport-Peace" ] wrote in message
...
X-no-archive: yes
In article _1vwb.96689$Dw6.473262@attbi_s02, Ivan Kahn
writes
I was wondering if any of the manufacturers are considering submitting
for
IGC approval a GPS WAAS system that does not incorporate a barograph?
Seems
to me that such system is far more accurate then those that incorporate a
barograph, and should also never need calibration.

Ivan


Most unlikely as it the Technical Specification requires a barometric
record.

While I have no intention of entering into a long discussion on why
barometric traces are required, the comparison between barometric and
GPS altitude is a useful check and in the event of GPS signal being lost
temporarily, the barometric trace will prove flight continuity.

GPS altitude cannot be used for checking for Airspace Infringements and
this would invalidate it's use in many competitions.

Tim Newport-Peace

"Indecision is the Key to Flexibility."

I agree, why traces are needed is really the point. But I believe a GPS with
WAAS is far more accurate than a barograph and should also be more cost
effective. But unless someone seeks approval then I would not expect any
specification to change. I was just wondering if there is any movement in
this area.

Ivan