On 08/11/2010 22:37, chris French wrote:

The handheld Garmin GPS's can vary. Those with the high sensitivity
aerial/receiver (what ever it is exactly) seem to work well. Don't use
it in cities much, but my Vista HCx works well under tree cover.

Yes indeed. I and a friend were looking for a summit in woodland a few
years back and my older Vista soon lost lock while his later version had
no problems.