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Re: [TowerTalk] Attachments was: Re: The Antenna System

To: <towertalk@contesting.com>
Subject: Re: [TowerTalk] Attachments was: Re: The Antenna System
From: "Jim Hargrave" <w5ifp@gvtc.com>
Date: Sun, 22 Apr 2012 09:20:33 -0500
List-post: <towertalk@contesting.com">mailto:towertalk@contesting.com>
You can always use "Dropbox" www.dropbox.com/
...No Affiliation...

    73s de Jim
       W5IFP


  > -----Original Message-----
  > From: towertalk-bounces@contesting.com
  > [mailto:towertalk-bounces@contesting.com]On Behalf Of David Jordan
  > Sent: Sunday, April 22, 2012 9:15 AM
  > To: n4zr@contesting.com; towertalk@contesting.com
  > Subject: Re: [TowerTalk] Attachments was: Re: The Antenna System
  >
  >
  > Think of it this way Pete -- why waste bandwidth sending
  > graphics to the
  > entire list and risk malware distribution when for a given
  > topic perhaps
  > less than 10% would have interest in a particular thread.  Best
  > to post the
  > graphics to a web site where those interested can click on the link to
  > gather more details and visuals.  This is the way its done on
  > other list
  > services. Less risk, less bandwidth usage...
  >
  > 73,
  > Dave
  > wa3gin
  > ----- Original Message -----
  > From: "Pete Smith" <n4zr@comcast.net>
  > To: <towertalk@contesting.com>
  > Sent: Sunday, April 22, 2012 8:46 AM
  > Subject: [TowerTalk] Attachments was: Re: The Antenna System
  >
  >
  > > The blocking of attachments such as graphics with messages was
  > > originally based on concern that they might be vehicles for
  > viruses, as
  > > well as the bandwidth implications of large attachments.  The
  > impact of
  > > distributing a virus simultaneously to several thousand users was too
  > > horrific to contemplate.
  > >
  > > I notice now that almost all attempts to distribute malware that I
  > > receive are using links to trap the unwary.  Whether or not
  > it would be
  > > safe to allow attachments is a question I leave to the
  > security experts.
  > >
  > > 73, Pete N4ZR
  > >
  > > On 4/21/2012 11:45 PM, Bob K6UJ wrote:
  > >> Jim,
  > >>
  > >> I concur 100%
  > >> In the engineering fields we are accustomed to communicating with a
  > >> description and a drawing showing the details.
  > >> There should not be any guess work or trying to visualize the design.
  > >>
  > >> 73,
  > >> Bob
  > >> K6UJ
  > >>
  > >>
  > >>
  > >>
  > >>
  > >>
  > >>
  > >> On Apr 21, 2012, at 8:11 PM, Jim Lux wrote:
  > >>
  > >>> On 4/21/12 8:12 AM, Ward Silver wrote:
  > >>>> I'm really enjoying the multiple threads and discussions
  > that started
  > >>>> with baluns and have come around to an analysis of the
  > entire antenna
  > >>>> system.
  > >>>>
  > >>>> That changing just one element of the entire system in
  > isolation is
  > >>>> unrealistic is a key point that most hams do not
  > appreciate - indeed,
  > >>>> they rarely hear that point of view.  They learn about
  > antennas as one
  > >>>> independent thing, feed lines are another thing, baluns a
  > third thing,
  > >>>> and so forth.  Thus, they tend to analyze and troubleshoot
  > and modify
  > >>>> assuming changes "here" don't affect behavior "there".
  > Since changing
  > >>>> almost any part of the system affects the entire system,
  > the results
  > >>>> are wildly inconsistent and often mystifying - as noted by Ian and
  > >>>> others.  At any rate, the discussions have provided
  > numerous examples
  > >>>> to use in explaining antenna system behavior to our clubs
  > and fellow
  > >>>> hams (and in my case, readers) - thanks.
  > >>>>
  > >>>> Also, it would greatly facilitate the discussion were we
  > to be able to
  > >>>> include drawings - I noticed several misunderstandings
  > that would not
  > >>>> have occured if the text was accompanied by graphics.  I
  > can tell that
  > >>>> many writing hours have been consumed trying to write
  > clearly in a pure
  > >>>> text environment!
  > >>>>
  > >>> picture, 1000 words, and all that..
  > >>> _______________________________________________
  > >>>
  > >>>
  > >>>
  > >>> _______________________________________________
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  > >>> TowerTalk@contesting.com
  > >>> http://lists.contesting.com/mailman/listinfo/towertalk
  > >> _______________________________________________
  > >>
  > >>
  > >>
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  > >>
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  > >
  > >
  > >
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