I would like our club to install an audio variometer
in our basic trainer, the L-13 Blanik.

Some candidate varios include, the Borgelt B-40, the
Tasman, and the LX-16 (I think). There may be others
too. But I believe these all need TE input.

The Blanik is not plumbed for TE. Has anyone done
it? If so, could you provide me with information?

Thanks,
Ray Lovinggood
Carrboro, North Carolina, USA