(Richard Casady) wrote in
:

I guess people fall off of carriers and sometimes survive.
Eighty feet
is a long drop. Good chance they won't find you, if it is
moving. At
night, forget it.
Casady


One night, right after Yorktown came to Patriot's Point Naval
Museum's dock, a brisk breeze came up from the north, pushing
Yorktown away from her dock and big mooring pilings.

The lines snapped and Yorktown headed back out to sea floating
free off towards the port and passenger docks on the downtown
Charleston peninsula. The only man aboard was the astonished
security rent-a-cop screaming for help on his cellphone, all
alone on the monster. By the time the Navy tugboats got haulin'
ass downriver to take control of the derelict, she was almost
aground on Shute's Folly, a tiny island in the harbor. That
would have been bad. Navy tugs got her under power and put her
back at anchor at Patriot's Point. They couldn't dock her as her
dock was totally destroyed, hanging under her starboard side,
mostly.

To prevent this in the future, it was decided to SINK Yorktown,
permanently by pumping millions of gallons of fresh water into
her bilge compartments to put her on the pluff mud, then seal
those flooded compartments in wax to prevent it smelling. She
was then pumped all the way around with sand from a dredge to
insure her stability....well, at least into the far future when
the whole bottom will be rotted off her, creating someone ELSE's
Yorktown problem for the next generation...(c;



Larry
--
You can tell there's extremely
intelligent life in the universe
because they have never called Earth.

(Richard Casady) wrote in
:

I guess people fall off of carriers and sometimes survive. Eighty
feet
is a long drop. Good chance they won't find you, if it is moving.
At
night, forget it.
Casady


Sunk in sand like my last post shows, if you fall over the side,
you'll be falling into water that's a foot deep at low tide.
You'll die, instantly.

Larry
--
You can tell there's extremely
intelligent life in the universe
because they have never called Earth.

The tarnish doesn't do anything good. On a relative scale, silver is
250, copper 225, as is gold. Aluminum is 175. Stainless is about like
lead, 6 or 8. Plain carbon steel is 25. Thermal conductivity is
closely correlated with electrical conductativity for what that is
worth. Better at one is generally better at the other.

Casady


Richard...I'm telling you one of the worlds top antenna designers
lives here and I just happened to be lucky enough to get his help
setting up my radios. If he tells me tarnished silver is the best for
HF I take his word for it..If our goverment flys him all over the
earth to design develope and set up the best....that's good enough
reference for me.

Joe

I bet Larry could tell a few interesting stories on this subject.
Antenna designers are really in a world of their own. Back in the day I
remember a group of antenna engineers that were hired to keep a large
surveillence receiver antenna working. They would come down and crawl
inside the antenna case with a small metal tackle box. After a short
while you would hear some light banging here and there and then they
would come out and test it. The tackle box they carried had several
hammers in it they used to shape/tune the antenna with. In conversation
with them and from reading on the subject I learned that when it comes
to antenna design some of what you think should make sense, actually
doesn't. And sometimes stuff just works when intuitively you would think
it wouldn't.
Red

Red wrote in news:%sXQi.1096$932.869
@newsfe12.lga:

Richard...I'm telling you one of the worlds top antenna
designers
lives here and I just happened to be lucky enough to get his
help
setting up my radios. If he tells me tarnished silver is the
best for
HF I take his word for it..If our goverment flys him all over
the
earth to design develope and set up the best....that's good
enough
reference for me.

Joe

I bet Larry could tell a few interesting stories on this
subject.
Antenna designers are really in a world of their own. Back in
the day I
remember a group of antenna engineers that were hired to keep a
large
surveillence receiver antenna working. They would come down and
crawl
inside the antenna case with a small metal tackle box. After a
short
while you would hear some light banging here and there and then
they
would come out and test it. The tackle box they carried had
several
hammers in it they used to shape/tune the antenna with. In
conversation
with them and from reading on the subject I learned that when
it comes
to antenna design some of what you think should make sense,
actually
doesn't. And sometimes stuff just works when intuitively you
would think
it wouldn't.
Red



We COULD turn your 55' mainmast into a conical monopole, like the
gummit uses on HF, but the cage might interfere with the genoa...
(c;

About the banging, one of my technical college associates was the
wife of Dr Rufus Fellars, Chair of the Electrical Engineering
school at the Univ of SC in Columbia. One of the UHF TV stations
in Columbia had a bad reflected power from their multimillion
dollar antenna system 1200' up. They hired Rufus to correct it.
He took the measurements, did some calculations and drew up plans
to put 3 dents in the UHF feedline, creating another reflection
to cancel the one they had. Machinists installed the dents, and
when the station was turned back on, it had no reflected power
one could measure, making their big multikilowatt UHF beast very
happy, indeed.

Denting works at microwaves much better than HF, however. Dents
at HF frequencies are measured in hundreds of feet, not inches.

HF on a boat has but two antennas...a flagpole....a clothesline.
Neither antenna is "resonant" at the frequencies you want to use
them. So, we must always compromise by having a very lossy L-C
tuner in the line to match the complex impedance of the
clothesline, with its highly reactive component creating that big
reflection, to the 52 ohm resistive-only transmitter. This is,
virtually, a variable dent you can slide up and down the line
that also varies in depth and width to match the wide variety of
frequencies Marine HF has spread across. You are using the same
antenna system the Morse operator on Titanic used with his spark
gap CW transmitter, feeding a tuner to untuned wires between her
masts. If you look at qrz dot com and put in my call W4CSC into
the search engine, you'll see a picture of me holding a 300,000
volt ceramic insulator that failed around 70 KW on a pirate radio
ship I had befriended the captain and chief engineer of. The
tuner was built into the top of the military HF transmitter:
http://hawkins.pair.com/voanc1.shtml
It came from Voice of America in Greenville, NC, bought surplus:
http://hawkins.pair.com/voanc/voanc07.jpg
This transmitter was built into the fish hold of an old Canadian
offshore fishing trawler and installed at one of our little
shipyards for Rev R G Stair, who talks directly to his God and
rapes the women living on his commune in Canadys, SC. The boat
was supposed to be taken to Belize where he'd bribed the right
people to let him anchor offshore in international waters
microwaving his religious nonsense out to the boat for HF
transmission on the shortwave bands. But, the captain, a non-
religious man living in St Kitts to avoid American prosecution
about a pirate 100KW FM station they used to run from a sailboat
off NYC, was afraid the "brothers" were going to feed him to the
fish as soon as he got the boat in place and working. So, to
attract the FCC's wrath and prevent the boat from moving, he
transmitted on the pirate's favorite frequencies just above 7.3
Mhz in the 41 meter band at 70KW from the Wando River here. It
worked. FCC swooped down and confiscated everything making a big
show in the paper of what great bureaucrats they are at
protecting the airwaves of the rich and powerful, like Clear
Channel Commications, Inc. to keep the airwaves for themselves.

That insulator sure made an impressive arc when it exploded...(c;

Larry
--
You can tell there's extremely
intelligent life in the universe
because they have never called Earth.

On Oct 16, 1:53 am, Red wrote:
The tarnish doesn't do anything good. On a relative scale, silver is
250, copper 225, as is gold. Aluminum is 175. Stainless is about like
lead, 6 or 8. Plain carbon steel is 25. Thermal conductivity is
closely correlated with electrical conductativity for what that is
worth. Better at one is generally better at the other.

Casady

Richard...I'm telling you one of the worlds top antenna designers
lives here and I just happened to be lucky enough to get his help
setting up my radios. If he tells me tarnished silver is the best for
HF I take his word for it..If our goverment flys him all over the
earth to design develope and set up the best....that's good enough
reference for me.

Joe

I bet Larry could tell a few interesting stories on this subject.
Antenna designers are really in a world of their own. Back in the day I
remember a group of antenna engineers that were hired to keep a large
surveillence receiver antenna working. They would come down and crawl
inside the antenna case with a small metal tackle box. After a short
while you would hear some light banging here and there and then they
would come out and test it. The tackle box they carried had several
hammers in it they used to shape/tune the antenna with. In conversation
with them and from reading on the subject I learned that when it comes
to antenna design some of what you think should make sense, actually
doesn't. And sometimes stuff just works when intuitively you would think
it wouldn't.
Red

Some of those hammers were used to bend fins in the waveguide cavities
no doubt. The claws were employed to bend mechanically activated
tuning tabs here and there. Been there, done that, sold the t-shirts,
spent the money on drugs like caffeine, carbohydrates, etc. Didn't
like it, not going back next tour. Too uncertain. Too dusty.

ACTPSF (Always check the power supply first) is the eleventh
technicians' commandment. I hope that is ambiguous enough for you.

When the feet rot out of this world's biggest ground plane ask
yourself why it wouldn't matter, and why it would. Nebacudnezer might
know.

Antennae, like anything electrical, are bifilar devices. The power
"ground" line is part of the antenna if you have a monopole antenna (a
nonconfabulation, or oxymoron). Local static is equally expressible as
noise in the transmitter as it is in the receiver. The resistance of
the "ground" is connected to the end of the ground lead in the power
supply, but the resistor isn't connected to anything in common between
the tx and the rx, except for the distance. The distance between the
two non connections is related to the frequency and the distance and
the propogation path and the orientation (or call it the polarization)
between the two fields in the "ether well" or gravitational effects
field, as far as the coupling fields are concerned. Who doesn't
understand that? "Ground" is irrelevant, as it does not exist at radio
(wireless) distances, but only in local fields, where you have test
equipment with one lead marked "ground", for idiots.

Terry K -the eleventh technician, who revels in 16 channel data scopes
and differential glitches inside the discrete processor core with
75,000 test points, caused by old drum memory bearing wobble, known as
"RIMP", for NuDet reporting, long obsolete in NORAD, an early, buggy,
phone booth sized workstation connected to arpanet's daddy, defnet,
only they didn't tell us that was what "they" called it around the
water cooler, while we sat, bomb bait in our fallout shelter
"careers". Aargh! I feel as if I wasted my life!

Distillation will not remove radioactivity. MAD is our only hope,
aside from habeus corpus. Thank God for the crazy Americans.

I have no other credentials except my music, which I still cannot
transmit on the internet, because weener dozer won't sell me data
upload wads at near cost, nor you.

Damn! I am getting to hate computers. The last time I plugged a real
modem into my computer, the winmodem driver burned out my motherboard
centronics printer port. Argh! Phoner25.zip doesn't work on widoze
2000 any more! CRAP!

Jump ship! Copy LINUX for free, manuals extra. Write your own drivers.

What freedom? I just bought my mortgage as an investment in my SDRRSP,
now must pay the bank to supervise foreclosure on myself if I don't
pay the debt to myself, so I must pay myself interest, and income tax
on the income. Why can I not simply forgive myself the debt?