Why?
On 5 Apr, 19:54, Walter Maxwell wrote:
On 5 Apr 2007 18:04:15 -0700, "art" wrote:
On 5 Apr, 17:12, Walter Maxwell wrote:
On 5 Apr 2007 16:13:12 -0700, "art" wrote:
snip
Walt, W2DU- Hide quoted text -
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Walt, if you are looking for maximum horizontal or any other polarity
it can only be obtained by removal of reception of other polarities,
this maximum is obtained by having the radiator at 90 degree
multiples with respect to earth. You can prove this to your self
anytime by calculating max horizontal gain by progressively tipping a
dipole while keeping it resonant until the maximum is reached. If your
concern is for total gain without regard to polarity mix then the
vertical position total gain will equal the total gain of the tipped
dipole. The difference is that one arrangement has a mixture of
polarities where-as the tipped antenna will only provide a single
polarity. If another element or anything else is added near enough to
add reactance then the prior antenna must be adjusted to remove it,
thus the reason for remote adjustment which is much cheaper to
maintain rather than regular trips up a tower by maintanance men.
Hopefully Walter this will bring you up to date. I have no reason for
a 300 posting thread as I do not intend to write rev 3 of Reflections
or anything else.
Regards
Art
Art, using correct terminology is essential in preventing misunderstandings, as you have done with 'polarity'.
You have confused 'polarity' with 'polarization'--the two are not synonomous, but are distinctly different.
Sorry, Art, your misuse of this term has been confusing, rather than enlightening. Are you blaming me for the
more than 300 postings on this thread?
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Walt
Now why would I blame you for over 300 postings? Obviously you have
created some confusion which is natural for our hobby since we are an
old group which gives justification to "there is no fool like an old
fool" Nothing personal. Lets face it we oversell experience when in a
lot of cases it is the same experience over and over again. Anybody
here who remembers the Sputnik probably would not be able to get a
degree today or even the same job. On this tilt thing if you look at
patents in the 6 million plus area most would not understand what they
were referring to, whereas the present day student understands thing
fully since he grew up with digital transmissions. Heck most of us
retired before the last ten years which is becoming the heydays of
antenna research. Yes, as I get older I make the same mistakes as all
old people do and you make provision for other old people unless you
think your self as perfect as would a younger person who just got his
degree and was up to date.
The difference ofcourse is the young student wants to prove things to
himself until he gets behind technically when he then asks for proof
from others. If I look back at the past arguments on my threads many
pull out the 50 year old books that we have stored away. The modern
student will look up Google and even if he is a few years out of
school would have checked the computor for reference to "adjusting
antennas" or "tilting antennas"to get up to date where as the old
timer thinks he is still back in the old days so his knoweledge is up
to date and cannot adapt to the present situation he there is no
reference to that in my books.Odd thing I saw the other day was a book
by Terman and would you believe it nowhere in the book does the words
of "maxwell" or Gauss" show up so they must be imaginary also. Yup,
Walt as you get older you will find that a lot more people are mixed
up except you and need to be told so until the time come that more
people are saying it to you forcing you to be more tolerant.
Frankly a lot of people on this net need to get up to speed with
respect to radiation such as tipped antennas e.t.c instead of
discarding information in
favour of the opportunity to mock while the younger more knowledgable
members give a quiet smile to themselves. Walt were you aware of the
reasons for tipping? I doubt it because you probably can remember the
Sputnik when the standards of education was lower and Google was not
around.
Never heard you come forward with respect to the Gaussian and Maxwell
argument either before or after the young M.I.T guy put every body
straight or did you know it anyway but just didn't want to correct
people then?
Art
Art, you say I have created confusion? Over what? Confusion? How about responding to your misuse of the term
'polarity'? Now that's confusion.
And you say that some MIT guy put everybody straight? Just what is it the everybody needed straightening about
that the MIT guy is supposed to have done? And are you implying that Terman, Kraus, Johnson, et al are wrong,
and that we need 'straightening out' because we learned it wrong from these masters of 50 years ago?
And you're also saying that our educational standards are better now? Art, what have you been smoking? And are
you also saying that the new graduate with no hands-on experience outweighs a graduate of 30 years ago with
experience gained during those 30 years? What planet are you from, Art, certainly not Earth.
Think about it,
Walt, W2DU- Hide quoted text -
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