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  1. #11
    Garmin/GPS Systems GMod. What are your Favourite or Most Accurate Garmin Devices?
    What are your Favourite or Most Accurate Garmin Devices?What are your Favourite or Most Accurate Garmin Devices?What are your Favourite or Most Accurate Garmin Devices?What are your Favourite or Most Accurate Garmin Devices?What are your Favourite or Most Accurate Garmin Devices?What are your Favourite or Most Accurate Garmin Devices?What are your Favourite or Most Accurate Garmin Devices?
    Neil's Avatar
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    Yes of course. Up to 50 ft (~15 metres) is quite acceptable for on-road navigation imho (other users' opinions do differ though, i've found). But my point is to check if an outdoor unit such as an eTrex, when not enhanced by WAAS/SBAS and/or GLONASS, will report a similar accuracy to an automotive unit such as your 255 or the OP's 2100 (which don't process SBAB signals and rely solely on GPS sat sigs).

    I'm not for a moment suggesting that you should use your etrex like that for practical use. The question is of academic interest only, i.e. to gauge comparative sensitivity of receivers/antennas of the two types of units on more equal terms.
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  3. #12
    Navigation software expert What are your Favourite or Most Accurate Garmin Devices?
    What are your Favourite or Most Accurate Garmin Devices?What are your Favourite or Most Accurate Garmin Devices?What are your Favourite or Most Accurate Garmin Devices?
    Giomen's Avatar
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    Quote Originally Posted by alamel View Post
    My etrex is more acurate and 20 hour battries only 4 for 255 , but 255 have a biger screen
    Do you try activate a raw logging for position in Nuvi 255? My Nuvi 765T is not inferior to any non-professional GPS devices in accuracy in this mode. 2-3 meters is total error due to using of L1 GPS channel.
    One exception I am using external Garmin marine antenna on car root for reduction of correlation with directivity pattern. In this case tracks is equal without difference - go forward or go back.
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  4. #13
    Member + What are your Favourite or Most Accurate Garmin Devices? alamel's Avatar
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    Quote Originally Posted by Giomen View Post
    Do you try activate a raw logging for position in Nuvi 255? My Nuvi 765T is not inferior to any non-professional GPS devices in accuracy in this mode. 2-3 meters is total error due to using of L1 GPS channel.
    One exception I am using external Garmin marine antenna on car root for reduction of correlation with directivity pattern. In this case tracks is equal without difference - go forward or go back.
    no I dont try because I Dont care about accuracy so much on my nuvi , but I care on my etrex , and 2-3 meter its what I got on etrex legend HCX
    IPhone 6 with Garmin StreetPilot North America , etrex legend hcx , nuvi 255 ,

  5. #14
    Navigation software expert What are your Favourite or Most Accurate Garmin Devices?
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    Quote Originally Posted by alamel View Post
    no I dont try because I Dont care about accuracy so much on my nuvi , but I care on my etrex , and 2-3 meter its what I got on etrex legend HCX
    I use my nuvi as track logger in expeditions. There are no advanced accuracy in raw logging mode but the track records is very accurate and particular!
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  6. #15
    Administrator What are your Favourite or Most Accurate Garmin Devices?
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    Here's a link to a small report on the Old Etrex " which I have" and it's replacement the Etrex 10 and the little glitches are right but reduce greatly when in open bush.
    Code:
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    As I say one day will replace them, when I have used the tracks from the Etrex I have been happy with the Track and Map line up " I use OziExplorer as my mapping Software" the 2100 logs I found are just the same but not the glitch line that disappears off to wide blue yonder. The accuracy of both have been very close to each other with the best at 4mtr.
    Last edited by Neil; 28th February 2013 at 10:01 PM. Reason: Coded link.
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  7. #16
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    I didnt know that the etrex units had GLONASS. I personally have seen the difference that switching the non h versions to a h version using the star chips if i remember correctly was a huge leap in performance.
    I have seen that the new edge 810 has a glonass built in and i was wondering how much of difference it could make as ive heard in smart phones it can increase accuracy to about 1-3ft. Im currently running a edge 800 and get about 2-3m in my city but still have some tracking issues while in the car with the unit.

  8. #17
    Administrator What are your Favourite or Most Accurate Garmin Devices?
    Magnetron's Avatar
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    My old Etrex doesn't have GLONASS as far as I know and only uses the US GPS system, which is fine even when they change the SA I still have been able to find Camp "some of the bush is so dense in the West "tea tree/mulga""you could miss camp without a GPS.
    Last edited by Magnetron; 17th March 2013 at 04:55 PM. Reason: some grammar

  9. #18
    Garmin/GPS Systems GMod. What are your Favourite or Most Accurate Garmin Devices?
    What are your Favourite or Most Accurate Garmin Devices?What are your Favourite or Most Accurate Garmin Devices?What are your Favourite or Most Accurate Garmin Devices?What are your Favourite or Most Accurate Garmin Devices?What are your Favourite or Most Accurate Garmin Devices?What are your Favourite or Most Accurate Garmin Devices?What are your Favourite or Most Accurate Garmin Devices?
    Neil's Avatar
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    @IGNATRON
    If your 'yellows' are older eTrex models eTrex or eTrexH, they rely on SBAS (WAAS, etc) for GPS accuracy enhancement. All current eTrex models, including the yellow eTrex10, receive both GPS and GLONASS (which adds up to an extra 24 sat signals) plus SBAS capability so accuracy should be superior to the older models especially if GPS signals are sub-optimal.
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  10. #19
    Administrator What are your Favourite or Most Accurate Garmin Devices?
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    Yes they are the old models the one on the left of my linked post and the software is v2.14 no further updates and are the RS232 interface "but I have the RS232 - USB adapter" but 4mtrs is way OK where I go. But if I was in the East coast of OZ would need to be more careful coz of them thar blackberry bushes and creeks/rivers full of water, and creepy crawly's. huh
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  11. #20
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    Nuvi 3490LMT for travelling, Oregon 550t for geotagging photos and a fenix for outdoor use.
    May switch to the fenix for geotagging once battery issues etc. are resolved.

 

 

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