[TowerTalk] Common mode choke.

[Roger (K8RI) on TT]

On 10/9/2014 3:37 PM, Roger (K8RI) on TT wrote:

Don't know if this went or not.

73

Roger (K8RI)

> On 10/9/2014 3:01 PM, Mike Reublin NF4L wrote:
>
> It works OK for me on a center fed half wave.  A single  choke at the 
> feed point wasn't sufficient, so I added a second where the feedline 
> reaches the tower.  The choke is right against the tower .  With the 
> single choke and the highly imbalanced 75 meter fan dipole when the 
> power reached about a KW IIRC all the controled LEDs would light. At 
> the legal limit, they were bright. When I added the second choke, 
> located st the 20' level on the tower, the RF in the shack disappeared 
> even with the amp at the full legal limit with a steady carrier.
>
> Yes, I'm sure the tower affects it, but it works.  You didn't say what 
> bands your half slopers are on, but I assume 75 and maybe 160.  To get 
> a 45 to 60 degree angle on 160  takes a tower of 100' or more
>> I wrapped the coax for my 1/4 wave slopers thru 6 toroids. The bundle hangs so it touches the tower. Zat OK?
>>
>> 73, Mike NF4L
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>
> -- 
>
> 73
>
> Roger (K8RI)


-- 

73

Roger (K8RI)