[TowerTalk] current balun question

[Roger (K8RI) on TT]

Thanks.

My copy doesn't show if the coax not fed is grounded or open.  At least 
I haven't found it.

73, Roger (K8RI)

On 3/10/2017 10:48 PM, jimlux wrote:
> On 3/10/17 6:02 PM, Roger (K8RI) on TT wrote:
>> Doesn't the added inductance of a choke that covers 80, or 40 also add
>> more than just the length of the coax?
>
> There's no inductance contributed to the signal being carried, because 
> the magnetic field from the inner conductor is exactly cancelled by 
> the inductance of the current in the shield. Just like a bifilar 
> winding on a non-inductive wirewound resistor.
>
> now, for the current on the *outside* of the coax, yep there's 
> inductance a-plenty.
>
>
> _______________________________________________
>
>
>
> _______________________________________________
> TowerTalk mailing list
> TowerTalk at contesting.com
> http://lists.contesting.com/mailman/listinfo/towertalk


-- 

73

Roger (K8RI)


---
This email has been checked for viruses by Avast antivirus software.
https://www.avast.com/antivirus