On 9/4/16 8:50 PM, n0tt1@juno.com wrote:
Gents,
I'd like to build a 40m phased array "inside" my 160m
receiving-only 9-circle and I want to check for any
interaction between the two antennas.
I have the layout in EZNEC 6, but I'm not sure how
to "feed" the 160m array. Do I let it "float", ground the
elements or what?
Well, what's the antenna element connected to when you're not using it?
A piece of coax with no termination? A termination?
You can model that directly.
When I'm looking for interactions, I set the model up and then connect
and disconnect the element or structure from ground or a load and see
what happens to the antenna being modeled. You can look at the feedpoint
Z and see if it changes, or look a the pattern to see if it turns weird.
it's the "does this make any change" question that tells you if there's
interaction.
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