[TowerTalk] Fwd: Coax entry panel -- inside or outside?

[Larry Stowell]

Rich

I used KF7P entrance panel and love it. After all was mounted I use a

piece of insulation to fill the box and capped the inside pvc. Drilled 
holes for

coax and rotor cable and sawed the cap centered on the holes and clamped

it back together around the pipe.

73 Larry K1ZW

On 7/7/2019 12:37 AM, Hans Hammarquist via TowerTalk wrote:
>   Hi Rich,
> I arranged to have an aluminum plate mounted on the inside of the wall with a cut-out from which I can reach the plate from the outside. I have filled the cut-out with styrofoam to thermally isolate the plate. As the plate is heated from the inside, there is no condensation problem. The only issue is that the styrofoam needs to be replaced on regular bases as light and weather exposure destroy the styrofoam. The aluminum plate is connected to the tower with a 6-inch wide aluminum strip. The tower, very close to the shack, is grounded with 9 grounding rods..
> That's my 10 cents,
> Hans - N2JFS
>   
>   
> -----Original Message-----
> From: Rich Assarabowski <konecc at snet.net>
> To: towertalk <towertalk at contesting.com>
> Sent: Fri, Jun 28, 2019 9:13 pm
> Subject: [TowerTalk] Coax entry panel -- inside or outside?
>
> This is an age-old topic but maybe someone can offer some advice.?? I'm
> starting to redo my basement which will also have the new shack.?? In my
> previous station, I had replaced one of the basement single-pane glass
> windows with a piece of aluminum and had a bunch of feedthroughs for the
> coax.?? It was grounded to the outside ground system by a short piece of
> heavy copper cable.?? I never liked that solution as the connectors outside
> were exposed to the weather and there was no provision for any Polyphasers.
>
>   
>
> I'm looking at the KF7P entrance panel boxes (see
> http://www.kf7p.com/KF7P/EntrancePanels.html) which are an elegant way to
> bring in coax.?? I've got a new spot identified where I could mount such a
> box.?? It would be directly outside the shack on an outside wall, close to
> ground level.
>
>   
>
> However, there's another option which is more appealing to me.?? It would be
> to mount a big aluminum plate (or copper-sheet clad plywood) in the same
> location except it would be inside the house, rather than outside in an
> enclosure.?? The coax would come into the house directly to the plate, with
> Polyphasers and all the other antenna switching and filtering mounted on
> that plate on the 2x4 wall, just above the foundation.?? That would
> eliminate the need for the big outside steel box and would have everything
> at the single-point grounding location.?? There would be a short ground
> connection from the plate back outside to a ground rod, which is part of the
> perimeter ground rod system and is also tied to the utility ground.
>
>   
>
> Any issues with doing it this way?
>
>   
>
> --- Rich K1CC
>
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-- 
73 Larry K1ZW