[TowerTalk] CMC-230-5K

[jimlux]

On 4/21/16 11:12 AM, Tod wrote:
> As a matter of curiosity:
>
> You have a (CMC) Common Mode Choke in a feed line.  You add another, identical, choke in line.
>
> If the first choke attenuates the common mode current by 20 dB, the what is the total attenuation after you add the second Choke?



another 20dB, if it's resistive loss.  If the attenuation is partly due 
to inductive reactance and partly due to resistive loss, then it might 
be different.