Moderators: richierich, ua900, PanAm_DC10, hOMSaR

 
futureuapilot
Topic Author
Posts: 1329
Joined: Mon May 24, 2004 7:50 am

Handheld GPS Advice

Fri Mar 04, 2005 11:14 am

Hey, I've come to you guys and gals for some advice on what GPS unit to buy. I'm not too picky about the features, i would like a map, but if it doesn't have one that's alright too. It can be in grayscale, doesn't need to be color. I would like it to be accurate to about within 20 feet if possible as the reason i'm purchasing one is kinda for an accuracy important project. Any suggestions are great! I'm kinda... um... broke, so i don't have much money to spend so the finantial issue is kinda important. Thanks!

-Sam
 
Newark777
Posts: 8283
Joined: Thu Dec 02, 2004 6:23 am

RE: Handheld GPS Advice

Fri Mar 04, 2005 11:22 am

This is the GPS that I have and love:



It's a handy little thing designed for use in the car, but it is definitely not limited to that. It is fairly accurate, especially if you are outdoors and have contact with all the satellites. Not sure if it is what you are looking for, but it is listed in the $320 range.

http://www.garmin.com/products/gps5/#

Harry
 
iakobos
Posts: 3255
Joined: Wed Aug 06, 2003 6:22 pm

RE: Handheld GPS Advice

Sat Mar 05, 2005 1:12 am

Forget GPS (real name: NavStar).
Accuracy (for civil use) is system limited to 50 meters (164ft), regardless of which brand and model.
 
5T6
Posts: 264
Joined: Sun Dec 14, 2003 12:20 am

RE: Handheld GPS Advice

Sat Mar 05, 2005 1:37 am

Sam....

I bought a Garmin 196 several months ago. At about $799 it may not be in your budget, but save up if you can and buy the best one (whatever the brand) you can possibly afford. You won't regret it later.

The 196 is WAAS capable (and thus BETTER than 50 meters accuracy). I used it for my cross-country flights and enjoy having it with me in the plane if for nothing else than to be able to call out accurate distances when communication with either ATC or making call on CTAF.

Good Luck!

Mike
 
futureuapilot
Topic Author
Posts: 1329
Joined: Mon May 24, 2004 7:50 am

RE: Handheld GPS Advice

Sat Mar 05, 2005 2:16 am

Yeah, $799 is kinda out of my reach, i'm just hopping my dad will let me get a $100 model... might have to upgrade once i get a job. Thanks for the advice, i'll have to go out to Best Buy and look around!

-Sam  spin 
 
dl021
Posts: 10836
Joined: Fri May 21, 2004 12:04 pm

RE: Handheld GPS Advice

Sat Mar 05, 2005 5:51 am

Dude, I have owned a Magellan Map 330 for the last 3 years and it has served me well. It is inexpensive and very reliable. They offer maps for the US and Europe (except for Greece for some reason, probably because no-one can read the roadsigns  Wink ). Be advised that spending more than $250 on a GPS device for ordinary route navigation is probably not necessary.

Good luck.


Iakobos..The day you need better accuracy is the day you need to reconsider your activities. The only people who need better accuracy are either landing airplanes using instruments only (and using the wrong instrument) or people guiding ordnance on target.  Wink
 
Newark777
Posts: 8283
Joined: Thu Dec 02, 2004 6:23 am

RE: Handheld GPS Advice

Sat Mar 05, 2005 5:58 am

Quoting Iakobos (reply 2):
Accuracy (for civil use) is system limited to 50 meters (164ft), regardless of which brand and model


Then why does the accuracy that is displayed on my GPS unit commonly drop below 30 ft?

Harry
 
chrisdigo
Posts: 179
Joined: Sun Oct 12, 2003 3:26 am

RE: Handheld GPS Advice

Sat Mar 05, 2005 6:28 am

I'm using the eTrex Legend (with maps) and I'm happy with it. I also tried the Geko 101, very simple to use, but without maps and no connectivity. I like the whole line of eTrex from Garmin. They are portable, great for hicking, biking, to bring everywhere with you. Also anyone here do GeoCaching? http://www.geocaching.com

From my experience, I believe every GPS has the same accuracy. The price difference comes from the goodies (maps, color screen etc). The accuracy you get depends on the signal. The signal depends on the clear view of the sky (no trees), the weather etc. The best I've seen on my screen was 3m! Average is 5-6m.

Geko101: $90 basic, no maps, no connectivity.
Geko201: $110 basic, no maps, but connectivity.
eTrex: $99 Like Geko201 but bigger (what's the point?)
eTrex Legend: $150 Like eTrex but with maps.
http://www.garmin.com

Quoting Iakobos (reply 2):
Forget GPS


Well, as for today, do you know any other alternative to it?
 
futureuapilot
Topic Author
Posts: 1329
Joined: Mon May 24, 2004 7:50 am

RE: Handheld GPS Advice

Sat Mar 05, 2005 7:13 am

Quoting Chrisdigo (reply 7):
Also anyone here do GeoCaching? http://www.geocaching.com


Why do you think i wanted to get a GPS??? It was just for Geocasting, there is a Cache in my backyard from the previous owners... but we own about 40 acres so i can't just go out searching for it. Geocaching is awesome! Thanks for the advice!

-Sam
 
chrisdigo
Posts: 179
Joined: Sun Oct 12, 2003 3:26 am

RE: Handheld GPS Advice

Sat Mar 05, 2005 8:18 am

Quoting FutureUApilot (reply 8):
It was just for Geocasting


Then, I would suggest the Geko201: lightweight, small, PC connectivity. Perfect for GeoCaching! You don't need integrated maps: just enter the coordinates from the website and go!



Hey can you provide a link to the cache you're looking for?  Smile
 
SATL382G
Posts: 2679
Joined: Sat Aug 14, 2004 12:02 am

RE: Handheld GPS Advice

Sat Mar 05, 2005 8:29 am

Quoting Iakobos (reply 2):
Forget GPS (real name: NavStar).
Accuracy (for civil use) is system limited to 50 meters (164ft), regardless of which brand and model.


Iakobos -- Where have you been? Selective Availability was turned off during the Clinton administration, 5 years ago. I routinely get accuracies within 20ft.

http://geography.about.com/library/weekly/aa050400a.htm
 
futureuapilot
Topic Author
Posts: 1329
Joined: Mon May 24, 2004 7:50 am

RE: Handheld GPS Advice

Sat Mar 05, 2005 10:01 am

Well, If it works good for geocaching i might want to use it for other stuff so it would be kinda good to have a map if possible. That Legend looks like a good one!

-Sam
 
CVGpilot
Posts: 579
Joined: Sat Dec 27, 2003 5:20 am

RE: Handheld GPS Advice

Sun Mar 06, 2005 2:18 am

I have the Etrex Legend, and I really like it! If I had one negative thing to say about it, it would be that a external antenna cannot be hooked up to it.
 
mham001
Posts: 5745
Joined: Thu Feb 03, 2005 4:52 am

RE: Handheld GPS Advice

Sun Mar 06, 2005 5:28 am

I have a cheaper, older Magellen 330(i think). I use it for rough land surveying. It is routinely within 20 ft accurate. I thought I read the newer ones are more accurate. There are some extensive GPS forums around. Google is your friend.
 
iakobos
Posts: 3255
Joined: Wed Aug 06, 2003 6:22 pm

RE: Handheld GPS Advice

Sun Mar 06, 2005 8:54 am

Iakobos -- Where have you been?

In hospital Sam, but apart from this in the satellite industry.
NavStar (civilian license) does not guarantee 20ft accuracy.
It does not mean it cannot be achieved, occasionally or even rather routinely.

FutureUApilot was clearly asking "within 20 feet", which would imply precise work of a nature exceeding NavStar specifications.

...and no Ian, there are many other aims that putting a bomb on target.
Ship navigation in estuaries and channels is one example.
 
iakobos
Posts: 3255
Joined: Wed Aug 06, 2003 6:22 pm

RE: Handheld GPS Advice

Sun Mar 06, 2005 9:14 am

Latest declassified accuracy update from the USAF 50th wing (USNO) says:

2/3 of the USA's surface: 4 to 8 meters (13 to 26 feet)
the remaining 1/3 (W & SW and large parts of Alaska): 8 to 12 meters (26 to 39 feet)

These figures are given for a 95% predictability, and are likely based on data retrieved from top-grade military equipment. (the latter is my assumption)

Update: October 2004
 
futureuapilot
Topic Author
Posts: 1329
Joined: Mon May 24, 2004 7:50 am

RE: Handheld GPS Advice

Sun Mar 06, 2005 10:01 am

Quoting Iakobos (reply 14):
In hospital Sam, but apart from this in the satellite industry.
NavStar (civilian license) does not guarantee 20ft accuracy.
It does not mean it cannot be achieved, occasionally or even rather routinely.

FutureUApilot was clearly asking "within 20 feet", which would imply precise work of a nature exceeding NavStar specifications.


I was asking for with in 20 feet as I thought there was a difference in price depending on how accurate it was. I have no clue on how GPS units are and work, but thought you could "Pay for Accuracy," and didn't know weather 20 feet was possible or not. I guess it doesn't matter on how accurate it is as it will only help my search if it is closer. Thank you all for all your contrubutions!

-Sam
 
SATL382G
Posts: 2679
Joined: Sat Aug 14, 2004 12:02 am

RE: Handheld GPS Advice

Sun Mar 06, 2005 10:28 am

Quoting Iakobos (reply 2):
Forget GPS (real name: NavStar).
Accuracy (for civil use) is system limited to 50 meters (164ft), regardless of which brand and model.


Quoting Iakobos (reply 15):
2/3 of the USA's surface: 4 to 8 meters (13 to 26 feet)
the remaining 1/3 (W & SW and large parts of Alaska): 8 to 12 meters (26 to 39 feet)


Looks like you should have done your research the first time....
 
iakobos
Posts: 3255
Joined: Wed Aug 06, 2003 6:22 pm

RE: Handheld GPS Advice

Sun Mar 06, 2005 11:20 am

No dear, manufacturers do not guarantee the accuracy they advertise.

Garmin GPS60 10 feet all over N America
Magellan eXplorist100 within 10 feet

No guarantee, they call this "reliable accuracy".
Note that both claim better results that the USAF itself.

Who is online

Users browsing this forum: CometII, JJJ, johns624, luckyone and 28 guests

Popular Searches On Airliners.net

Top Photos of Last:   24 Hours  •  48 Hours  •  7 Days  •  30 Days  •  180 Days  •  365 Days  •  All Time

Military Aircraft Every type from fighters to helicopters from air forces around the globe

Classic Airliners Props and jets from the good old days

Flight Decks Views from inside the cockpit

Aircraft Cabins Passenger cabin shots showing seat arrangements as well as cargo aircraft interior

Cargo Aircraft Pictures of great freighter aircraft

Government Aircraft Aircraft flying government officials

Helicopters Our large helicopter section. Both military and civil versions

Blimps / Airships Everything from the Goodyear blimp to the Zeppelin

Night Photos Beautiful shots taken while the sun is below the horizon

Accidents Accident, incident and crash related photos

Air to Air Photos taken by airborne photographers of airborne aircraft

Special Paint Schemes Aircraft painted in beautiful and original liveries

Airport Overviews Airport overviews from the air or ground

Tails and Winglets Tail and Winglet closeups with beautiful airline logos