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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