On Wed, 29 May 2013 12:01:09 -0700, son_of_flubber wrote:

I'd suggest that audible variometers would best be introduced on day one
of training, maybe even cover up the variometer dial until the student
forms the habit of using the audio input.

I was lucky there - when I was learning all our club 2 seaters had audio
varios fitted. Of the simple audio varios I've used, I prefer the Borgelt
B.40 and the Tasmin V1000. The latter is preferable because it
continuously displays an average as well as the instantaneous reading.
Both have been around for a while so used examples can be found. Both
make pleasant noises. The B.40 is now superseded by the B.400 but the
Tasmin is still in production AFAIK. Both can accept a 9v battery as
backup: because of this I fly with a B.40 as backup to my SDI C4.


--
martin@ | Martin Gregorie
gregorie. | Essex, UK
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