>
> I have an alternative suggestion.
>
> With leftover resin and 'bid' make a 4 layup sheet (150mm square minimum)
> with a 25mm flange included on one side (peel ply the outer edge of the
> flange). Include a sheet of tinfoil between the 3rd and 4th layers and
> leave a central hole in the 4th layer to enable electrical contact.
Before doing all this work, if the GPS receiver has a means to display signal
strength
etc., one can temporarily rig a ground plane out of anything metal and
likely see nothing, except for possible minor effects re proximity to the earth
and nearby metal buildings. Ground plane and GPS have to do with a phenomenon
which exists on the ground, not airborne, especially in a nonmetal airplane.
Is it really likely the avionics mfr forgot to mention a ground plane, but
their install manual contains discussion on the more complex topic of
reradiation
interference?
Regards,
Fred F.
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