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Posted by Oppie on August 22, 2009, 9:02 pm


> Don't rely on GPS if personal safety is involved, I've got a unit that
> does position and altitude, but the altitude reading is at best flaky and
> can show misleading results. Better to pre-plan your routes using Google
> Earth and identify the danger zones first

Understood.
Takes some of the spontaneity out of 'Oh, let's explore where this country
road takes us'.
I have a paper topographical map of Vermont (where we've been travelling).
When in questionable circumstances, I can always read out Lat/Long from the
gps and cross-check on the paper map... or I can just look over and see how
blue my wife's lips are. All depends on how much she's teed me off that day.
No, that was bad of me to say <beg>
Oppie - married 36 years


Posted by Peter on August 25, 2009, 11:34 am


Oppie wrote:
>> Don't rely on GPS if personal safety is involved, I've got a unit that
>> does position and altitude, but the altitude reading is at best flaky
>> and can show misleading results. Better to pre-plan your routes using
>> Google Earth and identify the danger zones first
>
> Understood.
> Takes some of the spontaneity out of 'Oh, let's explore where this
> country road takes us'.
> I have a paper topographical map of Vermont (where we've been
> travelling). When in questionable circumstances, I can always read out
> Lat/Long from the gps and cross-check on the paper map... or I can just
> look over and see how blue my wife's lips are. All depends on how much
> she's teed me off that day.
> Oppie - married 36 years
Have you thought about an oxygen bottle? Might save the day if you get
trapped on a long narrow uphill track

Posted by Oppie on August 25, 2009, 4:55 pm




> Have you thought about an oxygen bottle? Might save the day if you get
> trapped on a long narrow uphill track

We used to carry the O2 bottle with us. In recent years haven't needed it
really in the car. We have two setups and have one at home with the other in
her office. The only real time we should have had it in the car was stopping
on the mountain to walk our dogs. Wife stayed in the car while I walked a
bit. Found out later that she had not started the engine but put the
ventilator on high. When I came back about 15 minutes later, she was in
respiratory distress and the car battery was now dead. Luckily, was able to
flag down a passing car and get a jump start. Just about flew down the road
till she started pinking up again. <whew!>
I now do carry an emergency battery starter pack / emergency light combo
that is a great bit of peace of mind.
Oppie


Posted by Keith on August 27, 2009, 6:58 am



> Do any of the tom-tom models support a readout of altitude?
> Reason I ask is that my old Garmin GPS on our boat (comes with option for
> fish finder and water temperature...) does give altitude. Whenever it
> locks on three or more satellites, it can do 3-axis navigation. Nice
> except that the outputs are only Lat/Long; requiring chart reading skills.
> My wife has some medical issues that dictate we should stay below 2000 ft.
> Travelling through the mountains by road, this sometimes can't be helped.
> Just nice to know what the altitude is and not have to keep looking over
> at wifey to see if her lips have turned blue... a navigation equivalent of
> the canary in the coal mine.
> Oppie
Navecore 8.320.9901 (at least) and later support elevation - folder 'height'
in TT root. Read-out (right-handed) in top LH corner, edit the 'height.cfg'
file to switch between metres and feet - and position, colours.... Example
height.cfg is:

x32 # x-position of top left corner of height-numbers in real pixels
y4 # y-position of top left corner of height-numbers in real pixels
h0.0 # geoidal separation, value will be added to height, meter or feet
mf # mode, "m" for meter, "f" for feet
d25401 # screen identifier for when to display height, day colors
n12697 # screen identifier for when to display height, night colors

Keith



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