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Garmin eTrex sensitivity


JohnRomola
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I've used a Delorme PN40 for 5 years, until it crashed a week ago. So I bought a Garmin eTrex 20 and ir seems to work fine. Except that in wooded areas it seems to lose satellite much quicker than my PN40. Is there a difference in sensitivity between different units? Are there GPSes that have better satellite capabilities than others?

 

== John

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My Etrex 30 receives sat. signals just fine in thick mountainous terrain or in the city. Havent tried it downtown around skyscrapers in the concrete jungle yet. Surely the 20 & 30 have the same receiver. The map being slow to pan is my only complaint which the 20 would also have.

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The map being slow to pan is my only complaint which the 20 would also have.

 

That's basically how they achieve the very long battery life. Low resolution screen and less powerful processing chip.

If am doing a lot of panning out at low zoom levels (county, province), i tend to turn off complex maps (like topo) first and knock the detail down a bit until I'm done.

 

 

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Etrex 20 crashes OFF constantly in the city taking the longest times to get back any satellites.

 

A good back unit if you have nothing else but don't bet your life on it!

 

Great on the water but hopeless in the city!

Since you have no experience geocaching I'm wondering if you even own a GPS. I have noticed you always like to post contrarian points of view. Is that to engage folks in discussions or just to disparage the unit currently under discussion.

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1405009601[/url]' post='5400956']

Etrex 20 crashes OFF constantly in the city taking the longest times to get back any satellites.

 

A good back unit if you have nothing else but don't bet your life on it!

 

Great on the water but hopeless in the city!

 

eTrex 30 owner here. Living in small, remote town called Toronto, Canada.... Only 5 million or so residents here so likely not a good sample for "City" use.My GPSr doesn't seem to have any issues when I visit the "downtown".

Suggest updating or switching maps, the one you are using likely has some bad data. I use City Navigator on mine.

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1405009601[/url]' post='5400956']

Etrex 20 crashes OFF constantly in the city taking the longest times to get back any satellites.

 

A good back unit if you have nothing else but don't bet your life on it!

 

Great on the water but hopeless in the city!

 

eTrex 30 owner here. Living in small, remote town called Toronto, Canada.... Only 5 million or so residents here so likely not a good sample for "City" use.My GPSr doesn't seem to have any issues when I visit the "downtown".

Suggest updating or switching maps, the one you are using likely has some bad data. I use City Navigator on mine.

No, most of us that own eTrex 20/30s are quite happy with them. The smelly one, that does not geocache, apparently has a beef with Garmin and takes delite in basing their products, especially the eTrexs. He probably bought one and found out it was not suitable to navigate a plane with.

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I can't compare to the Delorme, but I don't remember a single occurence of my Etrex30 losing it's lock under trees. I also use it a lot in London, and I don't remember it losing lock there either, indeed I was once in a train tunnel under a tower block and it still had a fix! it must have been getting reflected signals from the tunnel entrance. It will also get a fix indoors at home.

 

As sussamb says enable GLONASS, and you have more satellites to chose from.

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I can't compare to the Delorme, but I don't remember a single occurence of my Etrex30 losing it's lock under trees. I also use it a lot in London, and I don't remember it losing lock there either, indeed I was once in a train tunnel under a tower block and it still had a fix! it must have been getting reflected signals from the tunnel entrance. It will also get a fix indoors at home.

 

As sussamb says enable GLONASS, and you have more satellites to chose from.

 

Yup, that's been my experience too. I had a Colorado 400t, now THAT one would lose it's mind from time to time but my eTrex 30 has been pretty solid since the day I got it. I mainly use it for urban geocaching and - this is what I got it for - multi-day backcountry adventures where I spent a lot of time in trees, canyons and in terrain that is generally hostile to consumer electronics. I have not a single complaint about it and look forward to unleashing the Adirondacks upon it next week. But first I have to get through Toronto with it in order to find the bridge to the USA. Somehow, I'm not that concerned about getting lost. At all.

 

Side note - I've got 4500 caches loaded up all along the route and another 45,000 POIs representing every single active cache in Ontario as well, and the unit is holding up just fine.

+1 to the GLONASS comment, I noticed a definite increase in locking ability and accuracy with that enabled.

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No, most of us that own eTrex 20/30s are quite happy with them. The smelly one, that does not geocache, apparently has a beef with Garmin and takes delite in basing their products, especially the eTrexs. He probably bought one and found out it was not suitable to navigate a plane with.

 

Actually I bought a Etrex 20 especially because the 30 does not work inside the metal monocoque fuselage of an aircraft. The Etrex 20 still works quite well for air navigation but only as a backup...

 

My portable navigation GPS is the Garmin 695 but for bushwalking it's too large but for the plane it's designed for it!

 

vifc3o.jpg

 

Not many geocaches up where I work and play but if I find one in the sky you will be the first to tell...

Edited by robertlipe
Personal attack and profanity removed.
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No, most of us that own eTrex 20/30s are quite happy with them. The smelly one, that does not geocache, apparently has a beef with Garmin and takes delite in basing their products, especially the eTrexs. He probably bought one and found out it was not suitable to navigate a plane with.

 

I don't bother with him now, I have no idea why he even bothers to post on a geocaching forum unless he's just trolling, just report his posts to the mods ...

Edited by sussamb
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Actually I bought a Etrex 20 especially because the 30 does not work inside the metal monocoque fuselage of an aircraft. The Etrex 20 still works quite well for air navigation but only as a backup...

 

Some expert you are. They both have the same receiver.

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Moderator Note.

 

This thread, like many lately, has veered wildly off topic and bordering on abusive. Please keep all replies on topic, helpful, and refrain from personal attacks. When you see something naughty or abusive, please report it and let the volunteer moderators handle it. Engaging in one-to-one combat only brings the thread further off topic.

 

Thank you.

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