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Re: [TowerTalk] 80 Meter trap design needed

To: "towertalk@contesting.com" <towertalk@contesting.com>
Subject: Re: [TowerTalk] 80 Meter trap design needed
From: Mark - N5OT <r-emails@n5ot.com>
Date: Sat, 23 Oct 2021 07:38:36 -0500
List-post: <mailto:towertalk@contesting.com>
Dave has read my mind.

I'll mount the trap at the top of the tower, and above that will be something like a 10 foot stinger (insulated from the tower of course - probably the middle of a deceased 40 meter split element or something).  At the top of the stinger would be four top-load wires of a length that would bring the antenna to resonance at the desired frequency on 160 meters.

Mark N5OT


On 10/23/2021 7:28 AM, Haring family wrote:
Is this on top of the Rohn 25G that you plan on using for an antenna?

What is above or outboard which would need to be supported by the trapour otherwise insulated?

73,

Dave N3AC

On Sat, Oct 23, 2021, 07:56 Mark - N5OT <r-emails@n5ot.com> wrote:

    I hope to make a trap vertical that works on 80 and 160.  I hope
    to find
    an 80 meter trap design that can handle full power.  The 80 meter
    energy
    would stop when it gets to the trap, but the trap would pass 160
    meter
    energy.

    It won't be suspended with wire so smallness and lightweightness
    are not
    necessary criteria.  I hope someone can just shoot me a design and
    values.  Everything I find searching the internet is less
    straightforward than "make a coil like this and stick a capacitor of
    this value here" which I would think would be the easiest way forward.

    Any advice?

    73 - Mark N5OT




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