Logging of position and (if possible) depth

Several Garmins output NMEA data to a cable which can be hooked to a
computer. Does any Garmin output the data to a SD (or other) card?

I am pretty sure any of their models where the model number ends with
an X support SD cards.
The ones I looked at were microSDHC though I think one or two were
normal sized SDHC.

NadCixelsyd wrote:

Many of them will record tracks. Data for each track point would
include a lat/long position, date and time, and the GPS estimated or
barometric elevation. So if you look at the specs for a given model and
it has a track point capacity listed it will store that number of track
points (2,000 to 10,000).

Some of the models use an automatic track point collection rate to where
the frequency of collection is determined by the frequency of the
heading changes.

On some of the handhelds you can set the collection rate for track
points as either a interval of time (1 second or longer) or distance
(0.01 miles or or kilometers or more).

Any of the handhelds that have an "x" in their model name (76Cx for
example) have a microSD card in them and the track points collected can
be logged to a *.gpx file if desired a long as there is free space on
the card. That collection can go on for any period of time as long as
there is space. The *.gpx files (one file for each calendar day) can be
retrieved from the card with a PC and the points viewed in any of a
number of softwares.

The handhelds with the option to log track data to the microSD card
would be the most capable of any of the Garmins as far as the frequency
of collection and the period of time or distance they can collect. That
presumes that some one is insuring that the batteries are changed every
12 to 18 hours or so. An external (9-35V DC) power source can be used.

Jack

NadCixelsyd wrote:

Many of them will record tracks. Data for each track point would
include a lat/long position, date and time, and the GPS estimated or
barometric elevation. So if you look at the specs for a given model and
it has a track point capacity listed it will store that number of track
points (2,000 to 10,000).

Some of the models use an automatic track point collection rate to where
the frequency of collection is determined by the frequency of the
heading changes.

On some of the handhelds you can set the collection rate for track
points as either a interval of time (1 second or longer) or distance
(0.01 miles or or kilometers or more).

Any of the handhelds that have an "x" in their model name (76Cx for
example) have a microSD card in them and the track points collected can
be logged to a *.gpx file if desired a long as there is free space on
the card. That collection can go on for any period of time as long as
there is space. The *.gpx files (one file for each calendar day) can be
retrieved from the card with a PC and the points viewed in any of a
number of softwares.

The handhelds with the option to log track data to the microSD card
would be the most capable of any of the Garmins as far as the frequency
of collection and the period of time or distance they can collect. That
presumes that some one is insuring that the batteries are changed every
12 to 18 hours or so. An external (9-35V DC) power source can be used.

Jack

NadCixelsyd wrote:

Many of them will record tracks. Data for each track point would
include a lat/long position, date and time, and the GPS estimated or
barometric elevation. So if you look at the specs for a given model and
it has a track point capacity listed it will store that number of track
points (2,000 to 10,000).

Some of the models use an automatic track point collection rate to where
the frequency of collection is determined by the frequency of the
heading changes.On some of the handhelds you can set the collection rate
for track points as either a interval of time (1 second or longer) or
distance (0.01 miles or or kilometers or more).

Any of the handhelds that have an "x" in their model name (76Cx for
example) have a microSD card in them and the track points collected can
be logged to a *.gpx file if desired as long as there is free space on
the card. That collection can go on for any period of time as long as
there is free space on the memory card. The *.gpx files (one file for
each calendar day) can be retrieved from the card with a PC and the
points viewed in any of a number of softwares.

The handhelds with the option to log track data to the microSD card
would be the most capable of any of the Garmins as far as the frequency
of collection and the period of time or distance they can collect. That
presumes that some one is insuring that the batteries are changed every
12 to 18 hours or so. An external (9-35V DC) power source can be used.

Jack