[TowerTalk] UNUN Question

[RLVZ at aol.com]

I have a W2FMI 25 to 50 ohm UNUN Transformer.  (1 to 2  ratio)
 
Could I use this same UNUN to temporarily match 50 to 100  ohms?  (same 1 
to 2 ratio)
 
Thanks!
 
Dick- K9OM