Which GPS should I buy ?
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You should help fix that by marking up the roads on openstreetmaps.org
Originally Posted by Nick-H 
These days, even the phone is likely to come with one!
Although I have just abandoned Nokia in favour of Android, Nokia's Ovi (?) Maps are excellent --- and free.
I was looking at the possibility of something openstreetmap based for my phone only today. Unfortunately, it fails at the first test: Not even showing all the streets around my house.
These days, even the phone is likely to come with one!Although I have just abandoned Nokia in favour of Android, Nokia's Ovi (?) Maps are excellent --- and free.
I was looking at the possibility of something openstreetmap based for my phone only today. Unfortunately, it fails at the first test: Not even showing all the streets around my house.
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Originally Posted by four321zero You know what i found difficult during my info gathering for this?
There's no Dummy's guide to Buying a GPS.
You know what i found difficult during my info gathering for this?There's no Dummy's guide to Buying a GPS.
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Most GPS device manufactures makes money on selling you maps. But I think that you can only get OpenStreetMap maps on Garmin after reading this http://wiki.openstreetmap.org/wiki/OSM_Map_On_Magellan and pages under http://wiki.openstreetmap.org/wiki/Category:GPS_unit
Originally Posted by four321zero The only way of digging up info for this is reading user reviews on amazon. And that gets confusing too since some devices have the ability to use custom maps but they are paid for 
The only way of digging up info for this is reading user reviews on amazon. And that gets confusing too since some devices have the ability to use custom maps but they are paid for So, save yourself some time and just buy a Garmin.
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I think it would be outdated pretty fast, and other pages surely list a lot of information on Garmin GPS units used for various situations like: Trekking, driving, walking, running, cycling, sailing and flying.
Originally Posted by four321zero So if we have 1 site which would serve as a guide for buyers, it would be great. Basically a common name for every feature and a checkmark for those features.
So if we have 1 site which would serve as a guide for buyers, it would be great. Basically a common name for every feature and a checkmark for those features. 
Thanks again JonBen
I guess ill keep it narrowed down to Garmins. Am waiting for a contact from the US to confirm whether he will be coming to India soon. Hopefully he can get me a nice device at US rates.
The highest price for Etrex20 in the US is $199.00 (INR 10,000). Some of the sites sell it for as low as $173
On the other hand, the same device starts at INR 13,000 in India.
I guess ill keep it narrowed down to Garmins. Am waiting for a contact from the US to confirm whether he will be coming to India soon. Hopefully he can get me a nice device at US rates.
The highest price for Etrex20 in the US is $199.00 (INR 10,000). Some of the sites sell it for as low as $173
On the other hand, the same device starts at INR 13,000 in India.
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Better laid than never
Originally Posted by Nick-H That is not so much "wrong" as "purposely reduced accuracy."
If you look at marine charts, you will find that, especially in the rocky places, they are based on surveys that might be a hundred years, or more, old. The seabed hasn't changed! However, the difference between the co-ordinates of the chart and the co-ordinates of the sat-nav device were not understood. This was responsible for accidents, at least among non-professional sailors.
These days, I believe that correction factors are printed on charts. Possibly they can be applied in the GPS itself, but I'm guessing about that. I haven't done any navigating for nearly two decades, and, even when I did, sat-nav (later it got called GPS) was so expensive I rarely encountered it.
We need a professional! Where's The Capn?
If we see him appearing on the horizon, so long as we know his hight, we will easily be able to calculate our distance from him. In fact, we can look it up in the almanac: the Table of Mahajans Rising and Dipping
That is not so much "wrong" as "purposely reduced accuracy."If you look at marine charts, you will find that, especially in the rocky places, they are based on surveys that might be a hundred years, or more, old. The seabed hasn't changed! However, the difference between the co-ordinates of the chart and the co-ordinates of the sat-nav device were not understood. This was responsible for accidents, at least among non-professional sailors.
These days, I believe that correction factors are printed on charts. Possibly they can be applied in the GPS itself, but I'm guessing about that. I haven't done any navigating for nearly two decades, and, even when I did, sat-nav (later it got called GPS) was so expensive I rarely encountered it.
We need a professional! Where's The Capn?
If we see him appearing on the horizon, so long as we know his hight, we will easily be able to calculate our distance from him. In fact, we can look it up in the almanac: the Table of Mahajans Rising and Dipping
Just that GPS threads remind me of work so I often avoid them...Umm, it is a question of different datums being used with charts and the GPS. A small note will indicate this on marine charts saying something like.. "Satellite derived positions must be moved 1 minute southward and 0.5 minutes eastward to correspond with this chart".
Which means you must make the corrections before plotting your Lat/Long on the chart. The error is usually small, although it can be more than half a nautical mile in some parts of the world.
And, umm, satnav and GPS are different things. For one, the satnav never gave you a fix in real time; it usually gave you your position for as much as(or more than) half and hour ago (fix interval increasing with increasing latitude).
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185 odd on Amazon. Get it
Originally Posted by four321zero The highest price for Etrex20 in the US is $199.00 (INR 10,000). Some of the sites sell it for as low as $173
On the other hand, the same device starts at INR 13,000 in India.
The highest price for Etrex20 in the US is $199.00 (INR 10,000). Some of the sites sell it for as low as $173On the other hand, the same device starts at INR 13,000 in India.
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That model seems like a good entry level choice. I found it for $160 using froogle.com
Originally Posted by four321zero The highest price for Etrex20 in the US is $199.00 (INR 10,000). Some of the sites sell it for as low as $173
On the other hand, the same device starts at INR 13,000 in India.
The highest price for Etrex20 in the US is $199.00 (INR 10,000). Some of the sites sell it for as low as $173On the other hand, the same device starts at INR 13,000 in India.
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Yes, there are quite a few discounts offered for garmins in other markets. Unfortunately, getting it shipped from any of those sites to India, is not a good idea. Its more economical to get someone traveling to India carry it along with him for you, or buying it from an Indian dealer.
Originally Posted by JonBen That model seems like a good entry level choice. I found it for $160 using froogle.com
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