[time-nuts] frying pan antenna

[Mike Naruta AA8K]

Fascinating Bruce.  I had expected more degradation from
the shingles.  The indoor antenna was a temporary set up
until I could mount the outdoor one.  It works well
enough that I use it as a back-up antenna.

I suppose an advantage to having an older home is the
roof sheathing is composed of wooden boards, rather than
the modern plywood with its bonding resins.


Jim, you are correct about the fasteners.  This roof was
stripped and redone two years ago.  There are the nails
fastening the boards to the rafters, a layer of tarred
paper, which for some reason roofers like to pierce with
a liberal amount of staples, then the shingles nailed
into place.

I had mounted a Sirius satellite radio antenna under
the roof and discovered a position sensitivity.  I
initially went with locations midway between the rafters,
but discovered maximum signal level adjacent to a
rafter.  I attribute this to the nailing pattern.


This group is such an interesting resource.


Mike - AA8K


Bruce Griffiths wrote:
> Below 600C the only significant source of microwave absorption in wood 
> is the water content: