On Mon, 29 Mar 2004 07:08:02 GMT, Mike wrote:
Echosorb, a popular microwave RF
absorbent material that is available in sheet form. It ranges from a
1/16" thick pliable rubber to thicker, multilayer foam that looks like
the black antistatic foam used to ship IC's and other semiconductors.

Hi Mike,

It is also quite heavy which would be inappropriate for aviation
applications. I played with this stuff a dozen years ago when one of
my buddies got a speeding ticket in his 'Vette. He asked me to design
a stealth bra for his ride - it didn't seem to be practical for any of
several reasons.

73's
Richard Clark, KB7QHC

Richard Clark wrote:
It is also quite heavy which would be inappropriate for aviation
applications. I played with this stuff a dozen years ago when one of
my buddies got a speeding ticket in his 'Vette. He asked me to design
a stealth bra for his ride - it didn't seem to be practical for any of
several reasons.

Why didn't he just put aluminum foil on his hubcaps like everyone else? :-)
--
73, Cecil http://www.qsl.net/w5dxp



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On Mon, 29 Mar 2004 12:14:27 -0600, Cecil Moore
wrote:
Why didn't he just put aluminum foil on his hubcaps like everyone else? :-)

Do they sell Vettes with steel wheels and hubcaps in Texas?
Do you wear your Levis tucked in your boots or outside them?

Richard Clark wrote:
Do you wear your Levis tucked in your boots or outside them?

I'm not allowed to wear boots. I don't own any cows.
--
73, Cecil http://www.qsl.net/w5dxp



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"Richard Clark" wrote
Mike wrote:
Echosorb, a popular microwave RF
absorbent material that is available in sheet form. It ranges from a
1/16" thick pliable rubber to thicker, multilayer foam that looks like
the black antistatic foam used to ship IC's and other semiconductors.

Hi Mike,

It is also quite heavy which would be inappropriate for aviation
applications. I played with this stuff a dozen years ago when one of
my buddies got a speeding ticket in his 'Vette. He asked me to design
a stealth bra for his ride - it didn't seem to be practical for any of
several reasons.

I was going to paint a whole-car with the RAM-paint used on my submarine
masts. Until I saw the price. Cheaper to pay the tickets ;-)

Jack

The 297 hits on Google for "radar absorbent material" was information
overload? The 3,730 hits for "RF anechoic material" frightened you? And
the
70,100 hits for "stealth aircraft design" sent you scurrying here to see
if
we had anything for you?

At least it's nice to see you doing your homework before Sunday night.

Ed
wb6wsn


Wow. Good thing Frank is a seasoned ham; had he been a newbie you would
have just chased him from ham radio. Congratulations, Elmer!

Al W6LX

Frank Alforo wrote:
"J. Kraus shower that space cloth of this impedance reflects 30 percent
of the incident wave."

There must be an impedance discontinuity. Not 377 ohms?

Kraus said sheets of space cloth backed by a reflecting plate are
sandwiched between plastic layers. Kraus has an appendix "D" on
absorbers.

Searching on "Salisbury screens" got me 4578 hits.

Best regards, Richard Harrison, KB5WZI

"Al Lorona" wrote in message
...

The 297 hits on Google for "radar absorbent material" was information
overload? The 3,730 hits for "RF anechoic material" frightened you? And
the
70,100 hits for "stealth aircraft design" sent you scurrying here to see
if
we had anything for you?

At least it's nice to see you doing your homework before Sunday night.

Ed
wb6wsn


Wow. Good thing Frank is a seasoned ham; had he been a newbie you would
have just chased him from ham radio. Congratulations, Elmer!

Al W6LX




Don't be an apologist for people who ask stupid or ill-phrased questions.
Don't pander to the lowest level. I provided a reply which I thought was
appropriate to the question. It was slightly sarcastic, though, by Usenet
standards, reasonably civilized. It provided three direct lines of search
for what was a very nebulous and obvious query. At no point did I attack the
poster, demean his mentality, question his civilization, or impugn the
length of his manhood.

Further, I hope your self-worth is well seasoned, or at least insulated, as
you don't seem to understand the difference between Usenet and Ham Radio.
Cranking off a dumb query on Usenet is equivalent to tuning up on a repeater
or net frequency. It's a bad use of electrons, and you can expect to be
chastised.

Perhaps I shouldn't be so harsh with you, as you can't seem to follow the
thread. If you were, you would have noticed that I provided considerable
background on RF absorbent material in a subsequent post.

Now, do YOU have anything informative to add to the subject, or are you just
trolling for sympathy? BTW, in addition to being in the dictionary,
"sympathy" yields about 3,700,000 hits on Google. Now there's a project for
your dotage.

Ed
wb6wsn

Ed wrote,

Don't be an apologist for people who ask stupid or ill-phrased questions.
Don't pander to the lowest level. I provided a reply which I thought was
appropriate to the question. It was slightly sarcastic, though, by Usenet
standards, reasonably civilized. It provided three direct lines of search
for what was a very nebulous and obvious query. At no point did I attack the
poster, demean his mentality, question his civilization, or impugn the
length of his manhood.

Further, I hope your self-worth is well seasoned, or at least insulated, as
you don't seem to understand the difference between Usenet and Ham Radio.
Cranking off a dumb query on Usenet is equivalent to tuning up on a repeater
or net frequency. It's a bad use of electrons, and you can expect to be
chastised.

Perhaps I shouldn't be so harsh with you, as you can't seem to follow the
thread. If you were, you would have noticed that I provided considerable
background on RF absorbent material in a subsequent post.

Now, do YOU have anything informative to add to the subject, or are you just
trolling for sympathy? BTW, in addition to being in the dictionary,
"sympathy" yields about 3,700,000 hits on Google. Now there's a project for
your dotage.

Ed
wb6wsn


Aha! Another pompous, sarcastic, smug, overbearing, insufferable post from
a
gentleman whose acumen is as nebulous as his reply is asinine. You should
get a job at a community college, Ed. College students are inured to your
particular brand of snide, demeaning discourse, since many teachers use
it as a technique for avoiding having to answer questions requiring knowledge
those teachers don't possess.
73,
Tom Donaly, KA6RUH

"Tdonaly" wrote in message
...
Ed wrote,

Don't be an apologist for people who ask stupid or ill-phrased questions.
Don't pander to the lowest level. I provided a reply which I thought was
appropriate to the question. It was slightly sarcastic, though, by Usenet
standards, reasonably civilized. It provided three direct lines of search
for what was a very nebulous and obvious query. At no point did I attack
the
poster, demean his mentality, question his civilization, or impugn the
length of his manhood.

Further, I hope your self-worth is well seasoned, or at least insulated,
as
you don't seem to understand the difference between Usenet and Ham Radio.
Cranking off a dumb query on Usenet is equivalent to tuning up on a
repeater
or net frequency. It's a bad use of electrons, and you can expect to be
chastised.

Perhaps I shouldn't be so harsh with you, as you can't seem to follow the
thread. If you were, you would have noticed that I provided considerable
background on RF absorbent material in a subsequent post.

Now, do YOU have anything informative to add to the subject, or are you
just
trolling for sympathy? BTW, in addition to being in the dictionary,
"sympathy" yields about 3,700,000 hits on Google. Now there's a project
for
your dotage.

Ed
wb6wsn


Aha! Another pompous, sarcastic, smug, overbearing, insufferable post
from
a
gentleman whose acumen is as nebulous as his reply is asinine. You should
get a job at a community college, Ed. College students are inured to your
particular brand of snide, demeaning discourse, since many teachers use
it as a technique for avoiding having to answer questions requiring
knowledge
those teachers don't possess.
73,
Tom Donaly, KA6RUH



Thomas obviously has problems with higher education, as his most potent
insult is to suggest that I teach at a community college. Oh, the horror!

Whatsa matter Tommy, did I hit a button on you? Some jackass community
college teacher give you a low grade, and it ruined your life? Nothing left
for you but trolling Usenet?

So here's my challenge to you, Tommy Twerp. Either add something useful
about RF absorbent materials, or go fellate an operating 5U4!

Ed
wb6wsn