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-   -   CQ, CQ, CQ Cecil... (https://www.radiobanter.com/antenna/128732-cq-cq-cq-cecil.html)

John Smith December 30th 07 08:37 AM

CQ, CQ, CQ Cecil...
 

OK ...

I have this nice brass pipe and fittings, a couple of copper disks
~6in.+ to solder at the ends, etc.

Now, if I construct this tank for, say 10m, and it is ~28-32 inches in
physical length, and tuned with a cap at the end, how can I know where
the standing waves are/is? Should I "picture" this as if it were a real
1/4 wave at 10m, and the wave is "compressed?" ... Your best ideas?
Knowledge? What the heck did those gurus' say in their books? I mean,
I am going to have to drill a hole or two to get that 1 turn loop in
their to couple to something ...

I have gotten to this point, I thought it would be apparent ... need
some help. Without having to admit you are not a guru, got any pointers?

A friend in need ... I think they (the standing waves) are going to be
trapped in there though :-)

Got any ideas? I mean, just help getting me started ...

[pictures will follow at a later date to get us "all on board."]

Regards,
JS

John Smith December 30th 07 09:08 AM

CQ, CQ, CQ Cecil...
 
John Smith wrote:

[...]

Come to think of it, maybe I'd better "down scale" this and go 144Mhz or
higher, and shoot for a full wave length in physical size ... hmmm???

Got the copper, got the time, got the drive ...

JS

John Smith December 30th 07 09:53 AM

CQ, CQ, CQ Cecil...
 
John Smith wrote:
John Smith wrote:

[...]

Come to think of it, maybe I'd better "down scale" this and go 144Mhz or
higher, and shoot for a full wave length in physical size ... hmmm???

Got the copper, got the time, got the drive ...

JS


Oh geesh, this is much more interesting than I first imagined. I
could "lump" the inductances in turns at one end of the "pipe", or in
the middle--for example, or "stretch" it (helical wound) over the whole
length of the "tube", however, in attempting to "view" it, I think I may
need the higher freqs--where the physical dimensions will "force" the
truth ... Cecil! Your ideas?

D*mn man, where are you, and your books, when I need you?

Regards,
JS

John Smith December 30th 07 10:27 AM

CQ, CQ, CQ Cecil...
 
John Smith wrote:

[chit]

Well, d*mn man, your ideas?

Yanno, anyones ideas will be examined here--I don't need gurus', I'll
listen, if it works--I'll let 'ya know--if it doesn't, we'll try
somethin' else--but then, I suspect, you already knew that ... krist,
even if we are wrong--big deal--we'll try the next idea--won't we ...

Warm regards,
JS



Cecil Moore[_2_] December 30th 07 09:01 PM

CQ, CQ, CQ Cecil...
 
John Smith wrote:
Now, if I construct this tank for, say 10m, and it is ~28-32 inches in
physical length, and tuned with a cap at the end, how can I know where
the standing waves are/is? Should I "picture" this as if it were a real
1/4 wave at 10m, and the wave is "compressed?" ... Your best ideas?


All that is required to achieve resonance in a distributed
network is that (in phasor notation) (Vf+Vr)/(If+Ir) be purely
resistive. Use your imagination to figure out if that always
implies 90 degrees.
--
73, Cecil http://www.w5dxp.com

Cecil Moore[_2_] December 30th 07 09:03 PM

CQ, CQ, CQ Cecil...
 
John Smith wrote:
Well, d*mn man, your ideas?


My idea is to spend as much time as possible with
a beautiful blond teacher who doesn't have to
go back to work for another few days.
--
73, Cecil http://www.w5dxp.com

John Smith December 30th 07 09:18 PM

CQ, CQ, CQ Cecil...
 
Cecil Moore wrote:
John Smith wrote:
Well, d*mn man, your ideas?


My idea is to spend as much time as possible with
a beautiful blond teacher who doesn't have to
go back to work for another few days.


LOL!

Krist, my wife would kill me! I do love her too ...

:-P

JS

John Smith December 31st 07 05:07 AM

CQ, CQ, CQ Cecil...
 
John Smith wrote:
[...]

A trip to the metal scrappers turned up a couple tubes, ends, disks ...
maybe next weekend can do something with it all ... if you are on
dialup, the image may take a bit to load.

http://assemblywizard.atwebpages.com

JS

[email protected] January 1st 08 01:53 AM

CQ, CQ, CQ Cecil...
 
On Dec 31, 1:07*am, John Smith wrote:
John Smith wrote:

[...]

A trip to the metal scrappers turned up a couple tubes, ends, disks ...
maybe next weekend can do something with it all ... if you are on
dialup, the image may take a bit to load.

http://assemblywizard.atwebpages.com

JS


I recall a website that used major sized hardline to construct a set
of cans for 6M.


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