if you have the older version of the F75 or F75ltd you can get it upgraded to the DST!!!! http://www.fisherlab.com/hobby/upgrade.htm
if you purchased (have to have a proof of purchase) of the older version between July 1st 2014 and December 31st 2014, you will receive the upgrade for free.. Also available would be a choice to add or extend your warranty!!!
So Fisher is forgetting about it's past customers.. Let me know if I can help you with this process...
Gonehunting for History