This came up in another thread the other day: Which of the Radio Shack "Adapt-a-tip" power connectors fit the FT-817?
I'll start a new thread for this in hopes it might help people searching. I bought two RS wall-warts yesterday, and both came with a choice of one free adapt-a-tip. I got a B and a C because they looked closest. (I didn't need tips for either; I cut the ends off as soon as I got them home to put my own connectors on them.)
So I tried, and the Radio Shack Adapt-A-Tip that fits the FT-817 is RS "B" size
The actual sizes are given in this table, but I can't vouch for those:http://support.radioshack.com/support_tutorials/batteries/pwrgde-2H.htm