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From: Wade Norton <wade.norton_at_attbi.com>
subject: [Paddlewise] GPS Dry Bag Question?
Date: Thu, 2 Jan 2003 21:37:16 -0800
Hello folks,

OK, I have another question regarding dry bags for GPS/Cell Phones, etc.   I
picked up a Voyageur bag for use this weekend.

The question is, can I place both a GPS and a Cell Phone in the same bag?  I
have the Magellan GPS315 and a Motorola V60 phone and they both fit very
nicely in the bag.  I was just concerned rather the cell phone would
interupt or alter the GPS from transmitting to the satelites.

Your thoughts?

Wade


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How deep would the ocean be if they removed all of the sponges?
Wade Norton  -  Vancouver, WA USA
http://home.attbi.com/~wade.norton/
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From: Allan McLane <amcl_at_sover.net>
subject: Re: [Paddlewise] GPS Dry Bag Question?
Date: Fri, 03 Jan 2003 08:51:46 -0500
On Thu, 2 Jan 2003 21:37:16 -0800, Wade Norton wrote:

>The question is, can I place both a GPS and a Cell Phone in the same bag?  I
>have the Magellan GPS315 and a Motorola V60 phone and they both fit very
>nicely in the bag.  I was just concerned rather the cell phone would
>interupt or alter the GPS from transmitting to the satelites.

I doubt there would be much interference. First because cellular systems today use  824-896 MHz  and 1850MHz-1990MHz while civilian GPS uses 1575.42 MHz.

Your GPS is only a passive reciever and doesn't do any transmitting (uplinking).

Also, since both devices rely on coded modulation schemes they are each particularly immune from off-frequency rf interference.

The best way to be sure is to try and see if there is a difference in each unit's performance with the other first on and then off.

--allan


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From: Mike Baum <mikebaum_at_vp-photo.com>
subject: RE: [Paddlewise] [PDXseakayaker] GPS Dry Bag Question?
Date: Fri, 3 Jan 2003 07:09:59 -0800
<<Wade snipped<<I was just concerned rather the cell phone would
interupt or alter the GPS from transmitting to the satelites.

Your thoughts?>>

 

Good question. We know the airlines are concerned about the use of cell
phones and gps devices while flying. It's a real concern. Hold your cell
phone close to an AM radio and listen to the static. Especially when it
transmits. Will the phone affect the gps? Maybe. I suspect that if it does
it would be limited to reception and not accuracy. Do what you did when you
got the gps, take it out in the backyard and give it a try. Let us know.

 

I can't imagine a problem with the phone from the gps. Although, just
because a gps is only a receiver doesn't mean that it won't produce some
interference. 

 

I'm convinced that all the random radio interference floating around out
there is the reason I can't remember things like I did forty years ago. ;-)

 

Mike

 



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From: Robert Brubaker <bbserve_at_earthlink.net>
subject: Re: [Paddlewise] GPS Dry Bag Question?
Date: Fri, 03 Jan 2003 13:42:31 -0600
If you are hoping to use the phone while it is in the bag, I would think
you might have some difficulty opening the clam shell design of the v60,
which I think it has, while all sealed.  If you remove it to place the
call, any water that touches the keypad may instantly short it out.  My
company has lost several cell phones after just a drop or two of water
hit the key pad.  

As far as interfering with the GPS, I don't know if your model has a
built in compass as mine does.  If so you might have a big problem with
that particular function working due to the nearby metal of the cell
phone throwing off the magnetic field.  After some problem with my GPS's
compass I realized the "specially made" pouch for it had a metal
fastener that made the compass always point one direction.  

Bob



>>>   Wade wrote:
The question is, can I place both a GPS and a Cell Phone in the same
bag?  I have the Magellan GPS315 and a Motorola V60 phone and they both
fit very nicely in the bag.  I was just concerned rather the cell phone
would interupt or alter the GPS from transmitting to the satelites.

..........................................................
                      Robert Brubaker
               "Hitch your wagon to a star."
                    Ralph Waldo Emerson
             http://home.earthlink.net/~rbrub/
..........................................................
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