[Hi-zreceivingarraydiscussions] verticals supports

[contact at hizantennas.com]

Phil
I am referring to how much of your wire is parallel and close to your
mounting post. This forms a parallel plate capacitor with the vertical
elements post. The more overlap the greater the capacitance. The mounting
post will be ground and the element going up will be close and a capacitance
between the two.
 It sounds like you are using separate ground rods and mounting post. The
mounting post will still be grounded to RF the same as the ground rod. So
this must not be too close to the element itself.
  Here is some pictures I think Dave was trying to send.
"http://www.hizantennas.com/element_construction.htm"

  Lee

-----Original Message-----
From: Hi-zreceivingarraydiscussions
[mailto:hi-zreceivingarraydiscussions-bounces at hizantennas.com] On Behalf Of
Phil Duff
Sent: Saturday, December 20, 2014 9:11 PM
To: Hi-Z Receiving Array Discussions
Subject: Re: [Hi-zreceivingarraydiscussions] verticals supports


On Dec 21, 2014, at 4:52 AM, <contact at hizantennas.com> wrote:

>  Your system capacitance depends on how much overlap there is between 
> wire element and ground post.
>  Off the top of my head I would say you are going to lose quite a bit 
> of signal if there is more than a few inches of overlap.

Tnx Lee.  Now subscribed.

When you refer to overlap with the "ground post" in your 1st sentence above
are you referring to the actual grounding rod attached to the Hi-Z amp's
ground terminal or the vertical element's angle-iron mount which is driven
into the ground but not attached to the amp's ground terminal?

Phil NA4M


-. .- ..- --
Phil Duff          na4m[at]suddenlink.net










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