just read a article someplace about a new conductive paint that is going
to be used by different sources (pvt/mil) to in effect paint an antenna
on a surface. once such use was an 'orbiting' blimp , planes etc to
repete signals


ok so i wonder my roof has a flat brick wall it's 40ft tall 40ft wide

if i painted a antenna design think i'd get any useful performance in at
least one direction?

unf it didn't state any spec's but it's commercial


just really thinking out louad how a antenna w/little profile but
otherwise large surfacce area might work

ml wrote:

just read a article someplace about a new conductive paint that is going
to be used by different sources (pvt/mil) to in effect paint an antenna
on a surface. once such use was an 'orbiting' blimp , planes etc to
repete signals


ok so i wonder my roof has a flat brick wall it's 40ft tall 40ft wide

if i painted a antenna design think i'd get any useful performance in at
least one direction?

unf it didn't state any spec's but it's commercial


just really thinking out louad how a antenna w/little profile but
otherwise large surfacce area might work

Actually if the paint is continuous in it's conductivity there is no
reason why a painted antenna picture would not work. Tuning it might be
problematic but would work.
Try it and report back.

Dave WD9BDZ

There is a big problem with that idea because common brick absorbes
water content and will provide a very lossy substrate.
The resonant frequency will also be affected due to capacitance.



ml wrote:

just read a article someplace about a new conductive paint that is going
to be used by different sources (pvt/mil) to in effect paint an antenna
on a surface. once such use was an 'orbiting' blimp , planes etc to
repete signals


ok so i wonder my roof has a flat brick wall it's 40ft tall 40ft wide

if i painted a antenna design think i'd get any useful performance in at
least one direction?

unf it didn't state any spec's but it's commercial


just really thinking out louad how a antenna w/little profile but
otherwise large surfacce area might work

Put a 1 inch wide piece of tape 33 feet long in the middle of that brick
wall horizontally.

Paint the wall at least 5 feet wide totally around the tape.

Remove the tape.

Connect your coax approximately 15% from on end where the tape kept
paint off the bricks. Then connect the braid to one edge where the tape
was removed, then connect the center conductor directly across from the
braid. Fasten the braid and center conductor.

Go downstairs and load up your 20 meter 'vertical' antenna.

AKA SLOT Antenna.

I suspect the paint might be expensive though!! :-)

DD, W1MCE

ml wrote:

just read a article someplace about a new conductive paint that is going
to be used by different sources (pvt/mil) to in effect paint an antenna
on a surface. once such use was an 'orbiting' blimp , planes etc to
repete signals


ok so i wonder my roof has a flat brick wall it's 40ft tall 40ft wide

if i painted a antenna design think i'd get any useful performance in at
least one direction?

unf it didn't state any spec's but it's commercial


just really thinking out louad how a antenna w/little profile but
otherwise large surfacce area might work

In article ,
"David G. Nagel" wrote:

ml wrote:

just read a article someplace about a new conductive paint that is going
to be used by different sources (pvt/mil) to in effect paint an antenna
on a surface. once such use was an 'orbiting' blimp , planes etc to
repete signals


ok so i wonder my roof has a flat brick wall it's 40ft tall 40ft wide

if i painted a antenna design think i'd get any useful performance in at
least one direction?

unf it didn't state any spec's but it's commercial


just really thinking out louad how a antenna w/little profile but
otherwise large surfacce area might work

Actually if the paint is continuous in it's conductivity there is no
reason why a painted antenna picture would not work. Tuning it might be
problematic but would work.
Try it and report back.

Dave WD9BDZ

the bricks have been recently waterproffed, thou i guess they will still
be soggy after a strong rain guess i'd just have to add a small amount
of paint, and keep painting till swr etc are where it need to be to make
resonant if it even works

sounds like a fun experiment can't wait to snag some paint

Dave WD9BDZ

the bricks have been recently waterproffed, thou i guess they will still
be soggy after a strong rain guess i'd just have to add a small amount
of paint, and keep painting till swr etc are where it need to be to make
resonant if it even works

sounds like a fun experiment can't wait to snag some paint

If you paint a yagi on the roof, how do you intend on rotating the building?

In article ,
Silfax wrote:

Dave WD9BDZ

the bricks have been recently waterproffed, thou i guess they will still
be soggy after a strong rain guess i'd just have to add a small amount
of paint, and keep painting till swr etc are where it need to be to make
resonant if it even works

sounds like a fun experiment can't wait to snag some paint

If you paint a yagi on the roof, how do you intend on rotating the building?

my original post specified one direction , figured that's until i can
rotate the building easily

but if the antenna of this type worked well /was practical past the
experiment stage wich was also specified as the point...

then a better way would be to just paint 4 , one for each side and use
a coax switch yeah thats cool

On Wed, 05 Apr 2006 14:05:47 GMT, Silfax
wrote:

I would try putting up a vertical stripe on the building and then paint the
radials on the sidewalk/street. This could be the ultimate in stealth. Make the
radials look like a crosswalk or the center line down the street. You could
even paint the curb, to make a no parking zone radial.




Why paint radials? Just paint the entire surface for 260 FEET in
diameter. Then you can use a vertical for any band from 160 up with
infinite radials in the circle.

--
73 for now
Buck
N4PGW

I have seen my father use aluminum paint from way back in the 60's. I
haven't seen it lately, not that I have looked, but I wonder how it
would work.....

Buck
N4PGW

--
73 for now
Buck
N4PGW

Buck wrote:
I have seen my father use aluminum paint from way back in the 60's. I
haven't seen it lately, not that I have looked, but I wonder how it
would work.....

As a guess, very badly. The aluminum in the paint is in the form of
small particles, each probably covered with an oxide coating. So the
conductivity would be very poor, even if the paint dried in such a way
as to bring the individual particles into contact with each other (which
it very well might not).

Roy Lewallen, W7EL