If one has a sealed balun, such as you would pick up at your FLARPS or a
fles market, and the label has disappeared from environmental exposure,
is it possible to easily determine -

1) - if you are sure it's a 1:1 whether it's voltage or current type

2) - given it's totally unknown, anything about it.

Instruments available would be a standard multimeter and an MFJ 259 or
something equivalent.

I think I know the answer to 1), but 2) has me stumped. Yes, dummy
loads are a start, but is there an efficient way to get all unknowns
absolutely resolved.

tom
K0TAR