Herbert Kilian wrote:

Curt,
Consider an electric audio vario like the Westerboer 911 vs. any
mechanical instrument (incl. Sage, way overrated).
- The Westerboer has pressure transducers so it doen't need a flask.
- Mine is just as sensitive as my Cambridge 302, they move in perfect
sychronism.
- You only connect 12V and your TE tube to the instrument.
- The tone is very pleasant, nicer than the Cambridge and of course
you can turn it down
- When the going gets tough, I switch to the Westerboer, better in
really weak lift

I agree with Herb that a mechanical vario is pointless unless you don't
have any batteries at all. Even a battery to weak to operate a radio
still has enough power for a vario.

So, Herb: what features of the Westerboer make you like it better in
weak lift?

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Eric Greenwell
Washington State
USA