My 2 cents regarding the Stren ADF-75D:
Ours has been trouble free 24/7 operation since 09-10-03 with only an occasional battery recharge.
Excellent piece of equipment in my opinion.
I will bet money Stren will solve your problems, with a four year warrranty in effect.
Just wanted to offset any negative publicity.
MERRY CHRISTMAS TO ALL.
