Robert
I have 10 pages of original documentation on the Crossfell Variometer which
I obtained from a fellow in Canada some years ago. This documentation
includes circuit diagrams, specifications, etc.

These pages show the instrument as running on 4.5 volts, with 4.2 volts as
the recommended minimum.

Send me a direct email including your address if you would like me to
photocopy and post this information for you.

I have a Crossfell set aside in my gliding kit but no time to put into it.
Currently stuck with trailer building.

Regards
Roger Druce, Australia


"Robert Gaines" wrote in message
...
What voltage powers the old Crossfell vario.? The
red/green face variety?
Thanks,
Bob Gaines