Originally Posted by
Dave Gittins
All depends where you are going to fly. If you are in the south east with loads of controlled airspace, LARS and listening squawks you definitely need one with Mode C …. If you are in the wilds of Wales with only a grass strip and no controlled airspace .. fill yer boots.
It's nice to have but not essential if you're operating in Class G, you only really 'need' one to enter a TMZ or Class D airspace.
I fly microlights in class G with no transponder and used to own a powered glider similar to the Fournier which also didn't have one.