Balun for the vor antenna?

[Wagondriver]

I have an ancient vor antenna on my vertical, but I’d rather not replace it because I have it already, and it is a very clean installation. It has a balun cable attached to it that ends at the fuselage, but it is realistically probably 50 years old. I’d prefer to install a new cable, one because it is new, and second because a new cable would run all the way to the splitter, eliminating one connection.
Having a connection at the fuselage makes sense if I ever need to take the vertical off again, but that’s not real likely. I’m assuming that the quality of coax is better now than 50,years ago.
Spruce sells a balun cable for the Rami antennas. Why would it matter who’s antenna it is, as I understand it, the balun is determined by the radio frequency, so a vor and glide slope balun is the same for all vor antennas?
Am I out in left field?

 

[Doug Reid]

First, a balun is a matching transformer ...balun means balanced to unbalanced. It has nothing to do with frequency in your case. The construction can be either a coaxial balun or a coil type. The purpose is to match your coax, which is unbalanced, to the vor antenna, which was designed to be balanced. If it were mine, I would leave it alone unless you see obvious damage to the coax cable. If it works.....

 

[IK04]

Something like this?

 

[wilkersk]

Read this:

http://www.aeroelectric.com/articles/BALUN/Balun_Fabrication.html

 

[flyingron]

Something like this?

View attachment 92068

That loos like an un-un. How do you get balanced out of that?