Subject: GPS
From: Andy Burton <>
Date: Tue, 20 Sep 2005 21:42:32 +1000

Hi Penny and others,

I purchased a Garmin GPS2 many years ago and apart from some initial minor problems, which were fixed under warranty, it has run perfectly.

It has no problem beneath heavy cloud, as it shouldn't, but beneath trees, obtaining a reading can be difficult. My technique in the open forests of the Sydney area is to walk through the forest with the unit switched on, having first obtained a sat. reading before entering the forest. In this manner the unit has enough satellite glimpses to maintain a reading. If one tries to obtain a reading beneath an open forest canopy by switching the unit on beneath the canopy, it will prove difficult unless there is a broad opening in the canopy. I give-up beneath rainforest.


Date: Tue, 20 Sep 2005 17:04:39 +1000
X-Accept-Language: en-us, en
To: Syd Curtis <>
Cc: bird <>
Subject: Re: FW: [BIRDING-AUS] RFI: GPS for birding
From: Penny Brockman <>

No - it is almost impossible to get a reading under a canopy (and heavy cloud also) - you have to move to an area where there is clear sky above and then wait, usually a bit longer than usual, to pick up the satellites. Then you can move back quickly and hope to get a reading!

Further to Martin O'Brien's posting as below, please may I request that respondents answer one additional question:

    11.     Have you successfully used your GPS instrument from
    beneath the closed canopy of a rainforest?

There are a number of interesting bird species that favour rainforest as preferred habitat.

Andy Burton's Bush Tours
52  Abingdon Rd
NSW  2069

Ph:             61 2 9416 2636
Mobile: 0408 937 531

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