Your response tells me that even though radials are spread out under the
vertical they need not be connected to have influence on the pattern. But
surely there must be a substantial difference in performance between having
radials connected to the feeder or floating??
At 20:40 2004-10-23 , Jim Lux wrote:
>> Say you have 50 radials spread out, and for the A/B test you disconnect 40
>> of them connected to a bus wire via a relay, will this be equivalent to
>> just having 10 radials under the vertical?
>No, because the radials are still there, and interact with the field.
>Interestingly, one of the validation cases for NEC-3 (which supports buried
>structures) was whether a buried wire could be detected by it's effect on a
>dipole in the air above it.
>This is what makes testing so difficult. Even if you dig up the ground and
>recompact it between test runs, it's unlikely to be that repeatable, unless
>you make dozens of runs, which is somewhat expensive.
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