[gps-talkusers] Re: More impressions of the gps/pk setup:
- From: "Tina Birnenbaum" <tinabir@xxxxxxxxxxxxx>
- To: <gps-talkusers@xxxxxxxxxxxxx>
- Date: Sun, 26 Jun 2005 19:48:48 -0700
Mike, will it just take a little longer for one's GPS to get the pois now or
will there be an issue somewhere else like with the braille note even being
able to load everything?
----- Original Message -----
From: "Michael May" <MikeMay@xxxxxxxxxxxxxxxx>
To: <gps-talkusers@xxxxxxxxxxxxx>
Sent: Sunday, June 26, 2005 9:55 AM
Subject: [gps-talkusers] More impressions of the gps/pk setup:
> I was speaking with a GPS engineer recently from a different company
> than Delorme and he brought up a curious point. He said one of the
> problems with hand held or body worn GPS antennas is that human
> tissue detunes signal reception. The GPS antennas are optimized to be
> on the roof of a car and work better if they have what is called a
> ground plain, some sort of metal background. Once you put the
> receiver and antenna next to the body, the tissue and high
> concentration of liquid reduces the signal reception.
>
> I think the Earthmate works incredibly well on one's shoulder if it
> is indeed detuned a bit by the body. If there is something to this
> theory, I do respect this engineer, it is worth comparing acquisition
> time of the receiver by placing it away from the body and on a metal
> surface when possible. For example, if you are in a parking lot or on
> a curb next to a parked car, try putting the antenna on the car. Just
> make sure it doesn't drive away or the owner doesn't get upset.
>
> I have not been able to get an Earthmate engineer to tell me if this
> human tissue detuning is something they compensated for or not.
> Certainly, the Earthmate more than other receivers is commonly
> handheld or on a person. Maybe this is why it works better than most
> other receivers.
>
> Either way, when I am waiting for a signal to be acquired, I like
> having something I can try if acquisition is slow. Perhaps putting
> the receiver on a cartop will help with reception or at least help
> with my patience. This is of course a lot easier to do with a
> Bluetooth receiver than a serial one.
>
> Mike
>
>
>
>
> At 08:48 PM 6/25/2005, you wrote:
> >Hi folks!
> >This is one very happy sendero customer, believe me. The gps in this
> >unit just seems to be operating so much more smoothly. It also helps
> >that I found the section in the command summary wherethe one-handed
> >commands for heading and distance and the like are.
> >Anyway, I just love how effortlessly this program is running. On the
> >old Braille Note we had almost no problems with version 3 and the
> >lockup but you somehow knew it was a slightly different program but
> >this pk and the windows ce 4 has virtually eliminated all of that.
> >There is one thing which grabs my patience and I am pretty sure it
> >is my location rather than any computer or receiver problem and this
> >was true with the earthmate as well. But, the satellites take an
> >awful long time to come up, at least 10 to 15 minutes and it doesn't
> >matter what time of day this is.
> >But, as I have said I think it is my location which is doing this.
> >I'll know more after I take this around the lanes of the village
> >where my Ohio apartment is and I have no idea when we will get back
there.
> >Anyway, its hot out and I walked at 5 minutes to 8 this evening and
> >didn't even draw a sweat.
> >
> >Mary Ellen Earls
> >Remember! Today is the Tomorrow you thought about yesterday.
> >
>
>
>
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