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lombard0
USA
435 Posts |
 Posted - 06 mai 2003 : 17:21:35
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"JC" I think you are correct. The wandering is only when the signals ae very low. The unit seems to work very well with good signals. There's noting like good signal to noise ratio. That's one of the reasons I use an external antenna even with the Ultra at times. A great deal for the quirks disappear when the signals are very good.
I think that when you have weak signals most other receivers would get you nothing at all. |
Edited by - lombard0 on 13 mai 2003 03:42:41 |
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gpspassion
83562 Posts |
Posted - 06 mai 2003 : 20:05:57
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Yes, so much is true, i.e no position below 25db with another GPS!
Also, the jumping around can be due to "lock to road" on a road package. Not on PN obviously. Talking of which, can you import your own maps in PN?
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lombard0
USA
435 Posts |
Posted - 07 mai 2003 : 03:17:48
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Sorry, somehow I must have miss led you. I can NOT import maps into PMN or PN (MapTech). I have only imported maps into Ozi Explorer, and at the time I was using a laptop, not PDA.
Check with the Space Machine/MapTech people and see if they think it is possible or will be in the future. I assume you are really looking for road maps of France. |
Edited by - lombard0 on 07 mai 2003 03:20:08 |
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gpspassion
83562 Posts |
Posted - 07 mai 2003 : 10:59:42
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Thanks, no I was referring to PN. Importing vector maps into a road solution like PMN isnt' going to happen anytime soon, unless you buy the 100gb TeleAtlas or NavTech databases ;-)
It's a bit disappointing about PN (and ON probably), but then the whole point of these programs is to save you the trouble of getting your own maps ;-)
__________________________
www.gpspassion.com
It's all about sharing the info
GpsPasSion Club - http://www.gpspassion.com/fr/smileys.asp
email: info@gpspassion.com |
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jckrauskopf
USA
13 Posts |
Posted - 07 mai 2003 : 22:25:29
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| I confirmed last night that the "wondering" I observed with the GM-270 Ultra while indoors disappears with an external antenna attached. Thanks for the lead. |
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gpspassion
83562 Posts |
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paulkbiba
USA
5014 Posts |
Posted - 12 mai 2003 : 05:12:35
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Just back from an 800 mile (round trip) drive from NJ to Buffalo. I used Routis and my new Holux CF Ultra. The following are my observations:
Routis:
The software performed perfectly. I have done this drive many times, as my daughter was in college in Buffalo (and this was her graduation), so I am familiar with the route. Routis routed me exactly as I have come to drive. The ETA was "dead-on" accurate. I know driving times from all points on this route and Routis was correct for all of them. It is clear that Routis uses a combination of calculated time and averaged time as it changes in real time as you speed up and slow down. When I was caught in thundersorms and slowed from 75 to 50, Routis would change the ETA. Clearly this was averaged, because the ETA would take 5 or 6 minutes to change.
Of the software I have used, Routis is the most sophisticated in giving directions. It uses such terms as "turn right" , "Bear right", and "Stay right" correctly. The voice prompt is very clear and easy to interpret. One annoying factor is that the voice sort of "explodes" with a plowsive before each sentance. Another good point is that it is the only software I know (Pharos, Mapoplis, PocketMap) that gives you a series of directions all at the same time - see below.
On the other hand, while you can use POIs as a destination in a route, Routis, unless I am missing something, does not display them on the map. This means you can't display rest areas or gas stations, which Mapopolis and PocketMap do so well. Also, the display is a bit "thin". It doesn't give you city names (like Mapopolis) or areas of water, parks, etc.
Despite this, in my experience Routis is the most stable and reliable software I have seen to date.
Holux Ultra
I have done this route many times and when I go across the NY mountains and valleys around Cortland (about a 50 mile stretch) every unit I have used (Pharos, Magellan Meridian, Garmin, Holux Regular)has gotten an intermittent lock in good weather, and no lock in bad weather. Coming home, I was in a continual series of thunderstorms and downpours. The Holux Ultra registered lock on 9 of 9 satellites. This is an incredible performance. For the more experienced of us, imagine sitting in a thunderstorm, and the bottom of a valley, and getting 9 of 9. This was really exciting.
The downside is that the Ultra seems, and many people have commented, to exhibit a lag. With my regular 270 it pretty much follows me exactly. The Ultra is always a little bit behind. This doesn't make much difference, as a practical matter in most circumstances. However, in going through a cloverleaf, the 270 would follow me through, but the Ultra caused Routis to recalculate in the middle of the cloverleaf. The advantage of Routis, however, is that it had already told me what to do ("Turn right, bear left, stay right") so I did not need to follow the display. I found that if I stayed at a 1 mile resolution that was all I needed.
All in all, between the Ultra and the regular, I will take the Ultra as my main unit. This may be because I am a regular shortwave listener, and have antennas all over the house, and used to have my own satellite dish in the yard to get and display weather satellites in real time on my computer (the internet made this obsolete - and made my wife very happy), so signal is important to me. I would rather have a assured lock above anything else.
This will be cross-posted in the hardware section as it applies to both. |
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gpspassion
83562 Posts |
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paulkbiba
USA
5014 Posts |
Posted - 12 mai 2003 : 14:29:38
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| See the Routis software section for the answer. |
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admin_0
1 Posts |
Posted - 14 mai 2003 : 14:42:14
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Have anybody got Holux CF GPS Ultra to work with OziexplorerCE?
I use a AXIM X5 and can not got OziexplorerCE to work. When I start Ozieexplorer moving map and connect the GPS Ozie shows busy for a very long time. If i (which happens some times) get a mark on the map it moves even if I stand on the very same spot (and the speedometer shows speed). If I try to change the scale for the map Ozie freeze and I must reset the Axim to get out. |
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stefans
Germany
6 Posts |
Posted - 27 nov. 2003 : 20:24:10
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Holux CF 270 Ultra is definitely not worth the money!
I've spent some weeks testing the combination Ipaq 5550/270 Ultra with own software and noticed really strange behaviour. While most of the time the coordinates seem to be good sometimes the position is wandering for about 200-300 meters off position and after 1-2 minutes it returns to normal state. This happens with 6-8 satellites in view when slowly walking along a road. (see image at:
http://forschung.bauv.unibw-muenchen.de/toocom/content/hlm/content.php?content=holux)
May dealer rates this as normal behaviour with respect to xtrac. For me this receiver is almost useless.
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Edited by - stefans on 27 nov. 2003 20:40:56 |
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gpspassion
83562 Posts |
Posted - 27 nov. 2003 : 21:33:32
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You'll see two things:
1. Jumping around when it uses very low quality signal, even of you have a lock on 6/8 satellites. This typically happens indoors
2. If stationnery, once of a good quality (must be DOP based), the position will "lock" completely and not budge at all, which is uncharacteristic of the way a GPS works and drifts around a bit. I suspect they did that to get rid of jumping around. I've never seen such an extreme example as yours though. Could it be a particularly bad spot for GPS reception with some type of intereference?
I agree that it's a pretty odd behaviour, but it does keep a fix where other GPS can't. Clearly though, it would be best to get a dual-mode GPS ST/XT for more universal use.
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stefans
Germany
6 Posts |
Posted - 27 nov. 2003 : 21:45:03
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This behaviour sometimeshappens every few minutes at different locations. If i return to these places only a few minutes later the position will show correctly so it cannot be some kind of multipath effects.
BTW: NMEA told me HDOP ~1.5 |
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gpspassion
83562 Posts |
Posted - 27 nov. 2003 : 21:53:34
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Indeed, that points to other problems and I wonder if your device is not partially defective as I've never seen that type of error with an Xtrac device. The most common problem is overshooting in turns and progressive "catching-up" with the actual path.
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Discounts and Assistance/Réductions et Assistance (Club GpsPasSion)
Best "GPS" PocketPC/Meilleur PocketPC "GPS" (affiliate) |
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stefans
Germany
6 Posts |
Posted - 27 nov. 2003 : 22:02:47
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| That's possible. I tried to send an email to holux.com.tw 2 times but never got a reply :-( |
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