Hi Bot:

Sorry for the delay. The tube tester manual should give you that
information - plus the pinouts for the 807 and 6L6. Assuming it is a mutual
conductance tester, there should be a switch for each element and you just
need to transpose each element.

Or, you could simply make an adapter socket with an octal base and a 5 pin
socket, with a wire coming out the side for the plate. Then, plug the
adapter into the 6L6 socket and read away. You may have to adjust the pots
a bit. It would be perfect for comparing 807s and will show you a dud.
Take a known good 807 and adjust the bias to make the tube read good and
that may be as good as you need.

73, Colin K7FM