[Elecraft] Help Identify a Balun

[Jeff Burns]

I was given two baluns, but I have no information about them. They are
marked Ultra-Bal 2000 Model UV-1. Can anyone tell me what kind of baluns
these are? 

I plan to order the parts for a new horizontal loop antenna on Monday. I
need a balun to transition from open line to coaxial cable. If the balun I
have will work I can scratch a new one off my shopping list. 

Thanks for the help.

Jeff Burns
AD9T