This message is in MIME format. Since your mail reader does not understand
this format, some or all of this message may not be legible.
------ =_NextPart_000_01BCCCFA.BFB8F070
Content-Type: text/plain;
charset="iso-8859-1"
Content-Transfer-Encoding: quoted-printable
Hi folks,
Thank you all very much for your timely and helpful response to my =
query
concerning feedline choke for A3 beam. I received over twenty responses
to my somewhat na=EFve question. This reflector is indeed a valuable
resource !
Of course, Murphy had to play his part in my plans. Due to some =
domestic
duties, I was unable to actually raise the antenna. But I managed to
prepare all necessary cables, and indeed the coax coil is not as large
as I thought it will be, judging by Cushcraft drawings, so I expect no
adverse mechanical effects once attached to the boom.
In reply to my question whether the proximity to the metallic boom will
impair the electrical operation of the choke, several persons have
pointed that the electromagnetic field is located INSIDE the coax, so
the braid will effectively shield it from the boom. Right, of course;
but this raise another interesting question: at the =93symmetric=94 end =
of
the balun the current is circulating on the OUTSIDE of the braid, while
at the =93asymmetric=94 end the current is circulating on the INSIDE of =
the
braid. The electric field cannot penetrate the braid and therefore
cannot generate both currents. It seems to me that there must be a
certain current on BOTH the inside and the outside of the braid=85..
I accept as fact that from a practical point of view there will be no
adverse influence whatsoever in placing the choke in close proximity to
the metallic boom, and I will proceed with my installation work
accordingly. But I keep ponder this intriguing theoretical question, =
and
maybe someone will jump in with an explanation.
Again, thank you all for your support.
73 de Mike, YO3CTK
P.S. Please disregard the attachment, as it is an artifact of my
Microsoft software. Thanks.
------ =_NextPart_000_01BCCCFA.BFB8F070
Content-Type: application/ms-tnef
Content-Transfer-Encoding: base64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=
------ =_NextPart_000_01BCCCFA.BFB8F070--
--
FAQ on WWW: http://www.contesting.com/towertalkfaq.html
Submissions: towertalk@contesting.com
Administrative requests: towertalk-REQUEST@contesting.com
Problems: owner-towertalk@contesting.com
Search: http://www.contesting.com/km9p/search
|