[TowerTalk] Reverse feed System...(feed point?)

Herbert Schoenbohm herbert.schoenbohm at gmail.com
Sat Apr 23 20:03:03 EDT 2016


RF chokes designed for 5 or 10  MHz could be placed to the spider beam 
elements and also increase the Top Load.  Because this is a high voltage 
point in respect to 160 hand wound air chokes of sufficient size should 
be considered. If they are of proper construction they should have zero 
impact on the HF bands the spider-beam is designed for. here since I use 
a 3 element quad and the boom is 30 feet which provides some top 
loading.  However when I put a 30' aluminum stinger on the top of the 
tower things really started to play on 160.

On 4/23/2016 6:36 PM, Roger (K8RI) on TT wrote:
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> So how do you pick the feed point and radial heigh*t?
> *
> As for the spider beam, doesn't the coax to it make it look like top 
> loading?
>
> For Lightning safety the coax to the beam should be grounded at both 
> the top and bottom of the tower.
> **
>
> 73
>
> Roger (K8RI)
>
>
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