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Re: [OM] GPS suggestions

Subject: Re: [OM] GPS suggestions
From: Chris Barker <ftog@xxxxxxxxxxxxxx>
Date: Wed, 10 Jun 2009 18:41:45 +0100
Amen, Ken.

On 10 Jun 2009, at 16:55, Ken Norton wrote:

>>
>> You are a technical dude, so I dont have to explain to you what the
>> limitations of the GPS system are.
>>
>
> LOL, I learned some of those limitations the hard way.  One of the  
> most
> important things to remember is that a GPS is no substitute to using  
> your
> brain.  Bill and Joel are probably still wondering how I got them  
> into the
> "Great Canoe Adventure" where our camera gear almost ended up at the  
> bottom
> of Lake Superior.

In our little fly-moped (Grob 115E) we have a fairly basic GPS (over  
on the instructor's side, not easily visible from the student's  
seat ;-)), but it keeps the average chap out of trouble in grotty  
weather (like today, big downpours and lowish cloud with poor  
visibility).  But it's a differential GPS, dating from the days of the  
degraded civilian reception.  All reception is the same now, as far as  
I know, but the differential system serves to keep track of students  
out on their solo navigation trips.  There is a readout in the ATC  
tower which the instructor can monitor as it shows the position of the  
GPS unit in the aircraft; if the student ever becomes "temporarily  
unaware of their position" the instructor can play demigod and guide  
him or her back to track.

Chris
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