Grasscatcher
-
Posts
1114 -
Joined
-
Last visited
Posts posted by Grasscatcher
-
-
Now Lee......here's one "anyone" that disagrees.
I've been GPS'ing since before "Geocaching" even was a twinkle in someones eye. I will acknowledge that "the game" has caused an increase in interest, which is great for inovation, but I couldn't care less about the passtime. What is annoying is that all the manufacturers lately seem to be concentrating on all the bells and whistles stuff instead of maintaining GPS accuracy. Most of the "fluff" features are nice but unnecessary for geocaching and most don't even pertain to GPS accuracy.
Accurately determining coordinates of a structure (irrigation headgate) from sometimes ancient legal descriptions after they were plotted on paper maps, can be a real challenge.( before computer mapping software) After the (starting) coordinates are determined then the fun begins. Next is following the GPS's direction to that location or somewhere "nearby".+ / _ ????? to find the target and replace the coordinates with "actuals" ( Approx the same as Geocaching but starting with only best guess coordinates)
Finding Benchmarks with "scaled" coordinates is also a fun activity that's more challenging than Geocaching.
I really have to chuckle when someone posts a complaint or question about "their" GPS ONLY getting them to within XXX feet.
Not complaining, just "opinion" and a plug for increased GPS accuracy development over Geocaching " fluff" features.
-
I am constantly amazed that people accept the fact that your location is inaccurate and jumps around, but then expect the collection of inaccurate points to somehow change into an accurate track or odometer reading. The software revisions do curve smoothing or snap to road to make a guess. A GPS with never be as accurate as your car, in my opinion and only my opinion.
I agree....and with even a little unscientific investigation /experimentation "they" could figure out that most of the difference between the odometer, the track log, and "actual" distance and speed comes from points recorded while stationary. (or moving so slow that they might as well be stationary). As mentioned, some of the new GPS models don't like any speed below approx. 2 mph.
-
I don't have it on right now but you can set the elevation mask at whatever is correct for your area (or as desired) and also the DOP limits.
Some of us GPS users fall in the clumsy and ugly categories.
-
Yeah, something like the Skyplot buried down a ways down on that page. Frankly I'm not even very interested in the deep analysis of the geometry, even if that was part of the program. I just need a quick look about the same as the status page on most handheld GPS units for comparison -- that is, matching up what the DeLorme & Garmin & other devices THINK constellation should look like vs what it actually is at the moment.Like this?With that Trimble planning site , if you set up your station location correctly, and are using the correct almanac data, you can accurately predict Exactly which sats "your" GPS will see at any location, even days in advance. I've never known it to be anything but "Dead On".
Experiment with it at your home, then predict what your unit will see a couple of days in advance and check it out at exactly the selected time on that day.
Play with the program, because there are lots of ways to display the data . Some might not make sense to you, but others will.
Understand the DOP screens and you'll start understanding why there are good times and there are not so good times to record GPS data on the same day. Sometimes the difference of 15-30 min on any given day can make a BIG difference.
-
Guaranteed last post.....
"And sharing info with BLM and Forest services is??".....It is a requirement when transfering GPS data dealing with un documented existing roads/trails in areas covered when those agencies start revising their "Land Use " information. Either document it/them, and furnish the information to the FS or BLM .........or lose the use of them.
GPS - Map 76CSx (I don't need or want AP on my handheld)
I only use MapSource to transfer the "Plain Jane" Garmin Topo maps. Plenty good for me since I'm only interested in the directions the GPS is providing, not whether the trail is visible on the 2" screen.
Cost of software- $99 -free updates (pleasant surprise ?)
Name -Expert GPS by Topografix (name already provided to others)
Easy to use ( more features than any one user can use but the more you use it, the more you discover)
Won't communicate directly with PN40 (thanks to Delorme) ....so get your file into gpx format and then use.
TL, we agree on one thing, that none of the frills are "Required", just conveniences.
As you know, GPSs with no maps at all have found thousands of caches.
The manufacturer's concentration on providing the "frills" has resulted in the decline in GPS accuracy and total reliability in all the new models. (Yes, including Garmin and Delorme both)
Oh yeah, the time delay was not sidstepping the issues..... it's Sunday morning,...I went to church.
-
"I want to reiterate, all of that in the quotes is loadable onto the PN series as well as support full paperless caching."
.........all of which makes it into a really cute mini-TV. Non GPS features good for "bragging rights" but totally unrelated to GPS accuracy and operation, and totally unnecessary for Geocaching.
-
Rockin R, & TL,....I guess you got so upset that you failed to notice that we were talking about software , not "units".
No, Garmin software doesn't do those things either.....Thank you for underscoring and agreeing with my point that 3rd party software is necessary.
If you exchange any data with the US Forest Serv or BLM , they just about must have it in shapefile format.
I exchange data with numerous folks, lots of different formats, different GPS users. Not numerous daily, but several each week. After all, I've got to have time for Trail mapping, Hiking, ATV,Snowmobile.
RRLover...PM Sent
I get by just fine each day with my "sorry" ole Garmin (my description) and my " insinuated as totally unnecessary" 3rd party software (that it DOES NOT take a GPS Professional to learn and use.
Just needed to let other GPS users out there know that there are other, much more versatile softwares available than the "one package" mentioned.
-
As Briansnat said, it's not really with either of the GPS units (Oregon/PN_40) where the problems lie. It's really the software and proprietary paranoia of manufacturer "D". "Clunky" is a very appropriate word for the software! There is much more that you cannot do, than what you can. (import/export/format conversions,etc)
As a PN-40/TOPO 8 user, just try and use multiple 3rd party softwares to import /export convert and exchange data with other GPS users in any one of multiple formats. Delorme doesn't want/allow that. THEY want to tell YOU what you want/need in the way of formats.(and capabilities)....except of course if you want to lay out big$ for more of their (again limited) software.
Many 3rd party developers won't even try to work with them due to past experience.
If you own a Delorme and are satisfied...Great!
I'm very happy for you and what you have "settled for".
Give it a breatk GC. It can also be said if you're content with going to all the third party software to do what DeLorme can do with one package, then I'm very happy for you and what you have settled for.
TL,
I really can't let the " what Delorme can do with one package" (absolutely incorrect Farce statement), go unchallenged.
Try some of these with only your "one package"....good luck!
1.Have someone send you a NG TOPO file (tpo) with Tracks and waypoints. Using only your "one package", open it and do whatever editing may need to be done. Then save the data in "gpx" format to send to several folks, Oh and yeah, there's the other guy that only has ArcView so you'll need to export all the data in Shapefile format for him. Also for use in GE you'll need kml,and kmz, and for CAD you'll want the data in dxf. ( and too many more to list)
2.The ArcView guy also has some data to send to you (in shp format) so you'll also need to be able to do some of the above actions in reverse also.
3.Someone sends you a track ( what format ?)of a hike you want to make. (either hand drawn or GPSd). You really need to have an elevation profile for info before your hike. Oops, the elevation data is missing in the file....go ahead and have your "one package" accurately create the elevation profile.....from the original data, not traced over.
4. etc,etc,etc
Gimme A Break! I can do all of the above within ONE software !!....and can also zoom in close enough to see what your PN40 tracks REALLY look like when overlayed on Aerial Photos where you can see visible trails.
Delorme with it's "one package" software is so far behind in capabilities , that they are out of touch with reality and think that they are in the lead!........but they will gladly sell you more for $$$ so that you can do a "tad" more, and more $$ for more......
-
Twolpert- Check out post # 9 above....so it's not me painting with a broad brush.
I had a PN-40(very early) for a short while, and noticed the problem immediately.
An easy way to see the problem is to log/record an intricate track in dense cover, or at least difficult reception conditions, then download the track and view it displayed over aerial photos. Zoom in to where the trail is clear and visible on the photo, and see how well the track/trail match.
You will start to see things that you really won't be proud of. Note: GE photos often are not georeferenced accurately enough to use for this purpose.
NEVER.....have I seen a "drift" problem with my 76CSx. When mapping trails / logging accurate tracks, I regularly also use an external antenna.
I have been in conditions where there was absolutely no reception(Slot canyons,etc), where even the 76CSx won't work.
-
Whoa!......to blame the drift on (ALL) the "Higher sensitivity chips" is a very uninformed statement!
The 76CSx has a high sensitivity chip, and you'll notice that it's not the one being described as having the problem. (the 60 series doesn't have the problem either)
The problem lies with the Mediatek & Cartesio "brand" chipsets. It started with the ETrex H series and continues thru the PN-40 and Colorado & Oregon series. (I'll also bet that the newer 60's with the M-Tek chips start having "problems")
That's also the express reason I refuse to buy a new model GPS until those problems are corrected. They are simply not as accurate and dependable as my 76CSx. (with the SIRFlll chipset)
Until the manufacturers can correct the problems or change to more accurate chipsets, you'll continue to hear complaints about "drift" and WAAS reception , etc.
-
As Briansnat said, it's not really with either of the GPS units (Oregon/PN_40) where the problems lie. It's really the software and proprietary paranoia of manufacturer "D". "Clunky" is a very appropriate word for the software! There is much more that you cannot do, than what you can. (import/export/format conversions,etc)
As a PN-40/TOPO 8 user, just try and use multiple 3rd party softwares to import /export convert and exchange data with other GPS users in any one of multiple formats. Delorme doesn't want/allow that. THEY want to tell YOU what you want/need in the way of formats.(and capabilities)....except of course if you want to lay out big$ for more of their (again limited) software.
Many 3rd party developers won't even try to work with them due to past experience.
If you own a Delorme and are satisfied...Great!
I'm very happy for you and what you have "settled for".
-
When a unit is bought with the express intent (as stated) on returning it....
When EVERY SINGLE one of YOUR posts above "knocks" something about the unit.....
When the negative opinions started even before you even got familiar with the unit....
When a poster has to tell everyone how unbiased their opinion is going to be.....
Yep...I'd say there is bias......
-
Everyone above only seems to be concerned with all the add-on fluff & frills.....NOT the GPS itself!
What good are all the pretty little pictures (maps & aerial photos) if the data you record, and see overlayed on them, is incorrect? ......besides, just how much useful detail can you see on a 2"X2" screen?
I would rather see a new GPS model that has these capabilities;
record accurate tracks without drift under dense cover,
consistent WAAS reception,
external antenna capability,
camera for one step geo-tagging,
None of the more recent models by any manufacturer qualify.
-
Per the OP's original request, I also think a side by side comparison between old chipset vs new chipset -----in the same model GPS----would be a real eye opener. Time will also serve the same purpose.
I'll go on record (ahead of time) and predict that new (chipset) 60 CSx's will slowly start showing problems previously non existent on models with the SIRFlll chipset. Every other GPSr model that has a/the Mediatek "high sensitivity" chipset is prone to problems with "drift" while logging tracks, reception under heavy cover, WAAS reception, etc......... The Cartesio chipset in other models has proven to have some of the same problems.
I still use a 76CSx (SIRFlll chipset) coupled with a high mounted external antenna to log extremely accurate and repeatable tracks. Up until the conditions get Extremely unfavorable to GPS reception, the tracks as recorded are as accurate (sometimes more accurate) than any available maps to print them on.
I personally don't feel that there is a more accurate consumer grade GPSr /chipset on the market. That applies also to the earlier 60x series. (ie 60Cx,60CSx, 76Cx,76CSx), since internally, they are the same.
Not even the most recent models by any of the manufacturers can compare to the accuracy and repeatability in adverse conditions. Forget "paperless" and all the other convenience frills, only think GPS feature functionality.
I was really hoping that Garmin would change the chipset for the Oregon 550. I would love to be able to NOT have to carry and extra camera and use additional software to be able to geotag photos at specific points along a track/trail.
-
In my OP, I just asked if anyone had seen or heard anything official about which chipset ( brand and model) would be in the 550t.
PS,
I sure hope you are correct ! ........because, if you are, then most of the remaining Oregon "problems" would just quietly go away.
-
So what is the problem? Not recognizing the codes? not installing?
Maingray,
You are correct.
Considering the fact that we're now seven posts into a "problem" and the PROBLEM has not even yet been defined.......maybe the OP is more interested in Ranting than in finding a solution.........
Rustynails,
Start at the beginning.....Describe in step by step detail what actions you have taken, and what results /error messages you have received. What does happen or doesn't happen.....
-
Would it necessarily be a Plus if they put the MTK chipset in the Oregon? The H series E Trex's have MTK in them and hasn't that been determined to be the source of "drift" problem?
-
If you used UTM coordinates you wouldn't have to be going through the mental gymnastics or calculations above.
......but that's too simple of a solution , so I'll just be quiet.
-
Sounds like paper weight material.
Unfortunately, that will probably be the prevailing attitude......, but the irony is that, except in the hands of some pseudo-GPS intellectual that "HAS TO" have the absolute "latest & greatest" with all the bells & whistles, it is capable of finding most caches almost as well as the "L&G" ones . Concrete jungle and heavy tree cover probably the exceptions.
-
Will Expert GPS allow me to view the underlying Garmin maps? If not it's a non-starter, see my OP.The best solution....... is to use something other than Mapsource( dang near anything) to edit your tracks.......I recommend Expert GPS by Topografix.
Really, the ONLY thing that Mapsource is useful for (IMHO) is transferring maps to your Garmin GPS.
On the subject of Mapsource, I consider it a good software product based on the many applications I've run over the last 30-years. Certainly leagues better than Delorme's Topo? Yes Mapsource could be better, but then so could you and I. I'm not perfect so I no longer expect perfection.
I like the filter tools and I started this thread to get ideas how best to use the available options.
Maps are maps , and data(tracks) are data....two totally different subjects. When editing tracks in EGPS, you are working with the data only (but shown over USGS quads) then you can open the exact same (edited) file with Mapsource and view the data as displayed over whatever maps you choose that will work with Mapsource.
I'm not perfect either, but I like to have my data as accurate as possible. That's why when you have maps as inaccurate as Mapsource's often are, it's nice to know that you can depend on the accurate data....as displayed over inaccurate maps.
Different strokes for different folks......
-
The best solution....... is to use something other than Mapsource( dang near anything) to edit your tracks.......
I recommend Expert GPS by Topografix.
Really, the ONLY thing that Mapsource is useful for (IMHO) is transferring maps to your Garmin GPS.
-
WRT REI's return policy - it is one of the best in the business. I'm struggling with using it in my case, though.
I originally bought a CO 400t mid May last year, then later bought an OR 400t mid to late July when they first came out. The CO was the latest/greatest geocaching device when I bought it in May and yet it was all but obsolete (in fact, soon to be discontinued at many stores) less than 2 months later. The CO is still sold, and I can see that it does have advantages over the OR for one-handed operation, but the units did not hold their value at all. To me, the satisfaction guarantee would be appropriate there as a sort of insurance against premature obsolescence of a $600 device. That's all arguable, I agree, but that is the way I perceived it.
I had already loaded Nav maps on the CO which were tied to the unit, and the jury was still out on the screen usability of the OR so I didn't do an exchange at the time until I had time to make sure the OR would work for me. Since then, though, I had to return the OR twice for new units (one for a bad touchscreen, the other for bricking on me) and now I finally have one that has been flawless for several months. Somewhere in that process I reached the point where it seemed like abuse to return the CO, whether or not you think it was right to return it originally. Now, I'm left with a CO that has virtually no value as a used device - maps that are locked onto it which I can't transfer to my OR - and even though the OR is still seeing love in the form of excellent new features in firmware releases, the CO is the ignored stepchild. The slow, but steady, way that the CO has been margined out of its prime with the focus on the OR has me still considering that there is a case to be made for a satisfaction issue on it, but there is definitely something to be said for not waiting a year to make this determination.
In the end, I hope I can get some money for it on Craigslist or Ebay, but I'm not holding my breath given how deeply discounted you can find them nowadays, and based on the incredible discounts we see on the OR units... :-(
Flatbear,
In your case, I would go back to your REI store with your explanations above and "get them in the loop" on the possible return. With their input on whether the extended time would "in their opinion" be taking advantage of their policy, you should be able to decide. Possibly then Garmin would allow you to transfer maps.
-
Your tracks are automatically backed up to the microSD card in a Vista HCx.
According to the Vista Hcx manual......logging tracks to data card is an "option" , not an "automatic" action.
User must choose that option setting before tracks will be logged to the card, and therefore be "backed up".
To the OP......
Murphy's law says, Everything Electronic, Mechanical, Human, Etc, that CAN screw up , WILL screw up .............!
SO...............Back Up.........it's cheap, quick, easy, insurance.
-
Quote from above:"First, the calibration. You look like an idiot while you're doing it. "
Since you seem to be classifying yourself, and apparently don't want to be perceived that way.........did you ever rationalize that the compass could be calibrated by laying the unit level on your flat outstretched hand, and turning JUST THE UNIT on your hand while YOU are standing still????????
This realization generally comes immediately before one of those DUH ! moments...........
Question re GPS performance in canyons.
in GPS technology and devices
Posted · Edited by Grasscatcher
If you ever plan on going back there, here's some suggestions that might improve your track results.
As suggested above, use a planning program (Trimble Planning) to try and choose a time when satellite configuration will be the most favorable.
Since you already are using one of the most accurate track logging GPSs (60CSx or 76CSx), for the "Track Logging method" be sure and choose "Auto", and for the "interval" choose "More Often" or "Most Often".
Also use a "high mounted" external antenna, preferably velcro'd on top of your cap. Anything lower gets partially blocked by your head and neck at some angles. The choke ring antennas get real expensive , but a Garmin 25 or 27 will work, as will a Gilsson.,,,maybe not as well as a choke ring antenna, but acceptable.
Also as mentioned above, KEEP MOVING. The high sensitivity chips are more susceptible to logging random points when stopped......and the external antenna will help to reduce multipath errors while still allowing the benefits of improved reception by the high sensitivity chipset.
This is not a guarantee , because there are places that NOTHING will work, but it would not surprise me for you to be able to get a very acceptable tracklog on that trail using the same 60CSx GPS configured as described above.(I've been there before GPS)