where to buy a coaxial of 25 ohm and 10ohm?

[waterytime]

I want to constuct a transmission line transformer with coaxial ,but it seem that the coaxial of 25ohm and 10ohm is hard to buy. Can anyone tell me where to buy?thanks!!!

 

[IanP]

Answer to wrong subject ..

 

[vfone]

There are a lot of companies that make 25 ohms or 10 ohms coaxial cables. Especially semi-rigid cables. If you were looking for a PA matching application semi-rigid would be fine.
http://www.haverhillcable.com/

 

[sergio mariotti]

Also microcoax www.microcoax.com produce semi-rigid coax with Zo<50 Ohm.

But, for my opinion, Zo=10 Ohm look too small.