A quick Google search found the following information:
http://www.gliding-in-melbourne.org/download/zander.htm
http://www.zander-variometer.de/

Wayne
HP-14 "6F"
http://www.soaridaho.com/


Hi.
www.gliding-in-melbourne.org is us, we had the SR820 in our DG300 and
recently have replaced it with something newer, so the Zander is for sale.

Regards
Jarek