On Wednesday, September 30, 2015 at 3:42:25 PM UTC-4, wrote:
It's been a while since I did the research. What are the logical choices for a reliable vario (to use as a backup) with electronic TE? Include used.

Chip Bearden
ASW 24 "JB"
U.S.A.

Used Cambridge 302 with GPS date bug. Good, electronic TE capable, cheap.

best,
Evan