Topband: RFI on TB

[Jeff Blaine]

Around here, lightning arrestors on these power cables are the prime 
candidate.  I have exactly the same issue here and every couple years 
have to go track down one that has started making racket over the summer 
storm season.  The noise is in-band and you can't filter it generally 
speaking.  The good news is if your experience is similar to mine, the 
power company will be able to fix your noise maker and the difference is 
almost literally night and day.

73/jeff/ac0c
alpha-charlie-zero-charlie
www.ac0c.com


On 7/22/19 7:33 PM, Richard (Rick) Karlquist wrote:
>
>
> On 7/22/2019 3:59 PM, 57JNDenneny at comcast.net wrote:
>
>> I am uncertain this will cure problem, My TB and yagi coax shields are
>> showing a noise signature on his analyzer.
>>
>> This was a shock as both coax cables have commercial bead type choke 
>> baluns.
>
>> Jim K7EG
>
> I'm not shocked.
> Bead type choke baluns are rarely effective on 160 meters.
> Refer to K9YC's handbook (or read his prolific posts to this
> reflector) to learn how to make effective chokes using large
> toroids as opposed to beads.
>
> Rick N6RK
> _________________
> Searchable Archives: http://www.contesting.com/_topband - Topband 
> Reflector
>