[HCARC] Attic antennas

Harvey N. Vordenbaum tower2 at stx.rr.com
Fri Feb 21 20:34:48 EST 2014


I hate to further this, but what about the flashing that is nailed all
around the edge under the shingles and tar paper.  what effect would this
flashing have on a wire dipole in the vicinity?
Maybe you could cut a narrow slit in it and connect to it like a dipole.

Hv


-----Original Message-----
From: hcarc-bounces at mailman.qth.net [mailto:hcarc-bounces at mailman.qth.net]
On Behalf Of Gary J - N5BAA
Sent: Friday, February 21, 2014 10:22 AM
To: galeheise at windstream.net; SARA SANDSTROM; timberrr59 at yahoo.com;
thipskind at sudedenlink.net
Cc: H - Reflector
Subject: Re: [HCARC] Attic antennas

My assumption, since Kerry indicated that it wouldn't work on his roof with
with foil backed insulation board, that on my metal roof it is totally
undoable.  Maybe I should erect a vertical and have it use the roof as a
large radial field.

Gary J
N5BAA
HCARC Secretary 2013/14
2014 Field Day COORDINATOR


"We are Coulomb of Borg. Resistance is futile. Voltage, on the other hand,
has potential."

-----Original Message-----
From: galeheise at windstream.net
Sent: Friday, February 21, 2014 8:45 AM
To: SARA SANDSTROM ; timberrr59 at yahoo.com ; thipskind at sudedenlink.net
Cc: H - Reflector
Subject: Re: [HCARC] Attic antennas

Kerry-

  You mentioned wire lying on top of an asphalt roof.  I had entered "wire
beam" in the past for a Google search and found a website where a fellow had
built a wire beam antenna on top of his roof.  As I recall, a transmission
line followed the peak of the roof with wire elements extending
perpendicular down both sides of the roof.  It was a pretty neat stealth
antenna.  Unfortunately, I didn't save the website but I suspect it can be
found with some effort.

Gale
KM4DR

-----Original Message-----
From: SARA SANDSTROM
Sent: Thursday, February 20, 2014 9:32 PM
To: timberrr59 at yahoo.com ; thipskind at sudedenlink.net
Cc: H - Reflector
Subject: [HCARC] Attic antennas



Howdy,

There are at least a couple of you interested in attic antennas.  Whenever I
talk to someone using an attic antenna or other stealth antenna , I ask them
about it.  One person, Bill, WB4DBO, directed me to his page on qrz.com.  If
you go to WB4 DBO and go down to the last 5 photographs, Bill has pictures
of his Bazooka dipoles in his attic.  Bill uses a K3 with a built in auto
tuner and says the built in tuner handles the SWR on his dipoles without any
problems.

Another station I recently talked to had taken is dipole and pushed the
wires under the bottom ends of the shingles on his roof.  In his case, the
dipole is 'almost' outside.  If you have a pitched roof with asphalt
shingles, it looks like a pretty neat idea and the antenna is pretty well
hiden.  One thing you might be consider is the type of insulation used in
your house.  From what I can see of mine, it looks like there is an
insulation panel under the roof that has aluminum foil on the side facing
down.  There is plywood on top of the insulation and a metal roof above
that.  Needless to say, an attic antenna would not be practical for me!

Kerry



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