On Sun, 24 Aug 2003 19:35:16 +1200, Barry Lennox wrote:

The 406MHz COSPAS/SARSAT ones are much more accurate, typically about
200-300metres just from a satellite fix, but they are also much more
expensive. Depends on how much you are worth!

It won't be long before the new generation combines a gps fix with the
distress squawk.

With a CD. I just hold my thumb at arms length over the target, then
sight through the CD hole, and get the reflection onto my thumb, hence
the target. Works great, and it seems like they are custom made for
signal mirrors.

The problem with using your thumb is that your hand will obscure more of
the reflection than a stick will.