From: Daryl Walford on
Toby Ponsenby wrote:
> On Fri, 10 Aug 2007 16:15:33 +1000, Daryl Walford Blathered on:
>
>> Toby Ponsenby wrote:
>>> On Thu, 09 Aug 2007 20:12:07 +1000, Daryl Walford Blathered on:
>>>
>>>> Marts wrote:
>>>>> We had a Tom Tom One navigator which worked well. It got stolen.
>>>>> Replaced it with a Mio C510. Works OK, but not as easy to use as the
>>>>> TTO.
>>>>>
>>>> snipped.......
>>>> Sounds like it needs an external antenna. I recently used a friends
>>>> cheap nav system that they bought from Aldi, its supposedly got Navman
>>>> electronics. I tested it on a trip from Melton to Pearcedale and
>>>> return, it worked flawlessly including through the tunnels.
>>>> Occasionally it made a single beep followed by 2 beeps, we eventually
>>>> figured out it was telling us speed camera locations, I thought I knew
>>>> most of those but it looks like there are quite a few more that I
>>>> didn't know about.
>>>>
>>>>
>>>> Daryl
>>> Did you find out who supplies the Software for that Aldi machine?
>> It probably was mentioned but I don't remember, I can ring and ask if
>> you need to know?
>>
>>
>>
>> Daryl
>
> when you get round to it - because I'm toying idly with buying one of
> those devices when they're next on Aldis specials - probably every 6
> months or so, so no hurry at all. But I refuse to buy anything with
> Sensis rubbish aboard.
> That's because I know it can be shitloads better if they use their in-
> house stuff properly. So far, they're Scamming us beyond belief.
>

I rang him but he didn't know much about the technical side of it,
apparently it hasn't got Navman electronics, its internally the same as
a Tom Tom so the software is most likely the same as they use.


Daryl
From: Marts on
Daryl Walford wrote...

>Sounds like it needs an external antenna.

I'll have to check it out, see if one is available, that the unit can
accept one.

For normal operation in areas where there isn't any say, extensive tree
coverage, or high rise buildings it seems to work fine.

--
Love is blind but marriage is an eye-opener...
From: Greg on
"Marts" <marts_57(a)yahoo.com.au> wrote in message
news:1clnb3lvco43qahcq97mp0fa7srn6r62bk(a)4ax.com...
> For normal operation in areas where there isn't any say, extensive tree
> coverage, or high rise buildings it seems to work fine.

That's been my experience too. (I also have a C510). I have had exactly the
same problem that you have in Sydney CBD wrt signal reflections etc.
Fortunately, I don't really need it in the CBD, but for those that do, an
external antenna is probably mandatory.

My main beef is that it too often advises either illegal or impossible
u-turns, despite having disabled u-turns in the routing prefs. There's a map
update available now but I'm not expecting miracles if/when I get it.

I'm a chauffeur driver and I find it "occasionally useful". It is usually
very accurate with street numbers, and this *alone* justfies the cost for
me.

Someone else also told me that the TomTom was very good in tunnels. I wonder
whether that's because it *estimates* your position (using last known
speed?), or whether it really is picking up a signal? My C510 doesn't work
in tunnels at all.

Greg.


From: Toby Ponsenby on
On Sat, 11 Aug 2007 13:07:48 +1000, Greg Blathered on:

> "Marts" <marts_57(a)yahoo.com.au> wrote in message
> news:1clnb3lvco43qahcq97mp0fa7srn6r62bk(a)4ax.com...
>> For normal operation in areas where there isn't any say, extensive tree
>> coverage, or high rise buildings it seems to work fine.
>
> That's been my experience too. (I also have a C510). I have had exactly
> the same problem that you have in Sydney CBD wrt signal reflections etc.
> Fortunately, I don't really need it in the CBD, but for those that do,
> an external antenna is probably mandatory.
>
> My main beef is that it too often advises either illegal or impossible
> u-turns, despite having disabled u-turns in the routing prefs. There's a
> map update available now but I'm not expecting miracles if/when I get
> it.
>
> I'm a chauffeur driver and I find it "occasionally useful". It is
> usually very accurate with street numbers, and this *alone* justfies the
> cost for me.
>
> Someone else also told me that the TomTom was very good in tunnels. I
> wonder whether that's because it *estimates* your position (using last
> known speed?), or whether it really is picking up a signal? My C510
> doesn't work in tunnels at all.
>
> Greg.

I 'suspect' TomTom gets an accelerometer - therefore uses last know good
position + acceleration detail in two planes until it gets another
satellite fix.
The clue is that they declare that altitude data goes bad, so IMHO the
accelerometer is a 'cheapie' as you'd expect - a little unlike what's
fitted to bigger aircraft.

__

Toby
From: Marts on
Greg wrote...

>Someone else also told me that the TomTom was very good in tunnels. I wonder
>whether that's because it *estimates* your position (using last known
>speed?), or whether it really is picking up a signal? My C510 doesn't work
>in tunnels at all.

No, it can't pick up a signal. What it does is to "estimate" your rate of
progress based on last known data. Mine used to change color when the
signal was lost then when we exited the tunnel it would change back and
was fairly good at picking up where we "left off".

The Mio does this too. Only tested it once but it seemed to work OK.

These were in the Citylink tunnels that go under the Yarra River in
Melbourne.

--
Man is incomplete until he is married. Then he is finished...
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