Of course it is. It forces common mode current toward zero, leaving balanced differential currents in the two conductors. What more should it do, make coffee too?
Date: Mon, 27 Mar 2017 06:07:47 -0400
From: "Roger (K8RI)" <k8ri at rogerhalstead.com>
Balun is short for Balanced to unbalanced, so the common mode choke is not a 1:1 BALUN.