# geko 301 GPS and distance indication

R

#### [email protected]

##### Guest
Hoi,

as a climber - NOT yet (indeed !) faced by any GPS receiver i have one
simple question: I found the geko 301 by Garmin and i'd like to know
how the 3D position of some target relative to the current position
becomes indicated:

OR

x meters in heading as well as n meters in (relative) altitude ?

Any knows that the altitude relative to the current postive is of
essential importance in navigating. This might be some special
queation concerning the geko 301.

Any hints ?

Thanx Rainman

N

#### Nick Hopton

##### Guest
In a recent message <[email protected]>,
[email protected] wrote.

[...]
>as a climber - NOT yet (indeed !) faced by any GPS receiver i have one
>simple question: I found the geko 301 by Garmin and i'd like to know
>how the 3D position of some target relative to the current position
>becomes indicated:
>
>
>OR
>
>x meters in heading as well as n meters in (relative) altitude ?
>
>Any knows that the altitude relative to the current postive is of
>essential importance in navigating. This might be some special
>queation concerning the geko 301.

[...]

Hi Rainer, the Geko 301 will tell you where you *are* in terms of
position and height to within a few metres. It will also give you a
bearing and tell you how far it is to your target, assuming that you
have entered the position of your target as a waypoint. The GPS will
show the distance to the target as a horizontal distance, not as a slope
distance.

What the Geko won't show you is the difference in elevation between
where you are now and the target. If you know the elevation of the
target then this isn't a problem, because the Geko will tell you the
elevation at your current position and all you need to do is to deduct
this from the elevation of the target to calculate the difference
between the two.

Regards,
Nick.
--
Nick Hopton and Anne Hopton