[TowerTalk] Floating Elevated Radials
kd4e
kd4e at verizon.net
Fri Dec 29 14:32:09 EST 2006
Are there any positive or negative variables
re. lightning incumbent to the floating radials
design vs those traditionally tied to the coax shield?
Here in central FL that is a *always* a required
question!
>>> In transmitting systems elevated radials should never have a ground path.
>>> Grounding elevated radials reduces efficiency.
>>> If the house has a lot of noise and you receive on the transmitting
>> antenna >you might not want to directly ground the antenna ground system
>> to the >house. This is especially true with a small radial system.
>>
>>> 73 Tom
> My elevated radials float, and are connected directly to the shield of the
> feed line. (7/8 inch Heliax.)
>
> When the other end of the Heliax is connected to the output of my amp, it
> is "grounded" to the "house" central grounding point because the chassis
> of the amp is strapped to it. Are you saying that the amp and transceiver
> should be isolated from "house" ground also? If so, just how much
> efficiency is gained?
>
> It has always been common practice to DC ground the radials of a ground
> plane antenna via the tower and its ground rod system, and by strapping
> the shield of the coax to the tower ground system at the base of the
> tower. Are you saying this method has less efficiency? If so how much
> less?
>
> (((73)))
> Phil Clements, K5PC
--
Thanks! & 73, doc, KD4E
*Have a joy-filled New Year!*
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