[TowerTalk] Balun query

[Barry Fox]

Fellow TTers:
I have a bunch of W2AU baluns, none of which are marked in any way
except the call sign.  I also have a Ultra-Bal 2000 model UB-1 balun.

1.  Is there any way to tell whether a balun is a 1:1 or 4:1 or 
whaterver:1?  

2.  I have googled the Ultra-Bal trying to find its specs to no avail.
Anyone know what kind it is?

No, I do not own a network analyzer or have access to one.

Thanks for any assistance.
73,
Barry - W1HFN