[HCARC] Attic antennas

Dennis Robertson robertson at ctesc.net
Fri Feb 21 12:12:07 EST 2014


Might work if you ever get on the air, but I guess you are too busy doing the minutes and newsletter.

D

Sent from my iPhone

> On Feb 21, 2014, at 10:22 AM, "Gary J - N5BAA" <qltfnish at omniglobal.net> wrote:
> 
> 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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