Well, the "1/4 physical, 1/2 electrical" (double quarter as my friend refers
to it) will just have remain as it is.
Its' advantage of being lighter and easier to handle, while presenting less
of a wind load and "leverage" again the mast and mounting hardware allows me
to raise it to a greater height than the full 1/2--NOT to mention the
advantage of NO ground radials. With this advantage, its performance rivals
the full 1/2. Weather I am daft or not--I will be using this antenna for an
omnidirectional source.
Those seeking a backpacking antenna, an emergency portable antenna, or an
antenna for operation in difficult and remote areas, or those seeking
stealth (just hide it in a larger diameter PVC pipe and call it a flag
pole!) would, most likely, find this design can be used to their advantage.
This posting sequence has been an enlightening experience though, and well
worth the trouble. I have learned that most will wage a "religious war" if
they think anyone is going to challenge the generally accepted ideas and
methods.
If you insist on going on, you will run the gauntlet of nay sayers and be
attacked. Guffaws and slurs against your mental stability will assualt you.
If one is looking to try something new--this is NOT the place to discuss it.
Perhaps another news group, where those who seek to intimidate and "out
shout" true expermenters would be banned and refused posting would be a
workable alternative and more conductive to attempts to break the mold.
Regards
"John Smith" wrote in message
...
Actually, and back to reality:
I am in the San Joaquin Valley in California, while this used to be one of
the richest agricultural areas in the world, decades of double and triple
farming has depleated the soil of many of the plentiful nutrients (salts,
trace minerals, metals, etc.)
Also, this area was like a tule swap before levies were built to hold back
the water, i.e., a peat bog!
Those who mentioned a poor and lossy ground condition might have something
there...
This area may naturally favor the 1/2 properties.
But then too, maybe it is only those damn aliens with their mind control
which are placing these ideas in my head! grin Yanno, agriculture uses
a
lot of those darn illegal aliens' labor!!!
Regards
"John Smith" wrote in message
...
Well....
I could have stated a less controversial design I guess.
Such as an antiresonate antenna cap--folded from aluminum foil, and
intended
to cancel out the moon bounced mind control rays from the aliens.
Since totally shielding the walls of my home with silver foil has failed
to
block the penetration of these "antenna rays" into my home, the cap might
be
just the ticket!
The burning question here would be what wavelength of foil the cap should
it
be folded from, and heck, I don't even think the frequency of their mind
control rays registers on earth meters!
It is a conspiracy, I TELL YA!!! grin
Regards
"John Smith" wrote in message
...
My question(s):
For an example, on the 10 meter band:
If I take a 28" whip and mount it at the end of helical wound coil
(wound
on
1" diameter form), where the "wire length" of the coil, PLUS, the length
of
the whip (28" + coil wire length) is equal to 1/2 wavelength (electrical
length)--BUT, the overall physical length of the antenna (top, tip of
whip
to base of helical wound coil) is 1/4 wavelength, what would the
radiation
pattern of such an antenna be?
Would it favor the pattern of a 1/4 or 1/2 wave antenna--or, would the
pattern be a compromise between the two--or, would the pattern be
totally
unrelated to either?
What could I expect the impedance of such an antenna be? Would the
reactance be capacitive or inductive? What would be the best way to
provide
a match to 50 ohm coax from such an antenna?
What software is available to model such an antenna?
Thanks in advance,
warmest regards
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