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(no email)
Date: Tue Aug 10 2004 - 16:25:13 EDT
Round wire will work OK for the ground wire. They do recommend a flat strip
but I'm fairly sure the difference is quite minor.
The desired screen characteristics are purely mechanical to avoid corrosion
and for ease of installation. If it is thoroughly sealed in epoxy or
fiberglass a fly screen mesh is OK but it will deteriorate quickly if not
thoroughly sealed. If you can get a heavier mesh then do so - again for
mechanical stability. The grid size and shape of the wire is not important.
Round wires do not "disappear". That is wrong.
Yes, if you are using a copper mesh to couple to the seawater it MUST be
below water line for best results. The mesh above the waterline adds very
little additional grounding if any.
You don't need capacitors in the ground circuit but the SSB should have its
own ground lead going as directly as possible to the mesh.
Regards,
Andina Marie Foster,
----- Original Message -----
From: "Jerry Peters" <>
To: <>
Sent: Sunday, August 08, 2004 7:58 AM
Subject: lv-ab: SSB Ground plane
> Hello group - This is my second post regarding SSB installation
>
> Three quick questions if I may. First, I understand that round wire is
> invisible in the grounding system and flat sheet or screen copper is
> required/preferable. If screen is used, what are the critical
> characteristics - grid size, wire size, etc? I am concerned that the
screen
> is just a bunch of small round wires. Second question is related. It is
> recommended to use several isolation capacitors for establishing the
> connection to the engine or other DC ground to avoid a DC ground loop
> between the antenna system and the radio. Once again, aren't the lead
wires
> to the capacitors round wire and won't they "disappear" electrically?
Third,
> is it important to keep the ground plane below the water level?
>
> My current plan is to laminate the interior of the hulls (catamaran),
above
> and below the water line, with copper "insect screen" and tie it to the
> engine ground, water tank, etc with 3" copper straps and pull it all back
to
> a single point at the tuner.
>
> Opinions?
>
> Jerry Peters
>
>
>
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