Hi Walt,
First, are you sure you're in memory mode? Press the C key, then the
pound key followed by the memory number, and pound or else spin the
dial.
A funny thing, I had forgotten how to program my TH-F6A. I hadn't used
it in a while, having snappd my SMA connector (again) about eight
months ago. Just got it back from being fixed by a friend of mine in
Alaska....way cheaper than a non-warranty repair. And I had to go to
icanworkthisting.com to refresh my memory on the keypad. *LOL*