[TowerTalk] qrounded antenna desgin question

Clint Talmadge unclebudd at bellsouth.net
Thu May 3 16:13:54 EDT 2007


No, the Tennadyne booms are both insulated from the mast or at least my T6 is.

Clint - W5CPT
  ----- Original Message ----- 
  From: Stone, Gary R. 
  To: Bill Gaines AD8P 
  Cc: towertalk at contesting.com 
  Sent: Thursday, May 03, 2007 7:38 AM
  Subject: Re: [TowerTalk] qrounded antenna desgin question


  Hi Bill and TT,

  No responses Bill - and that is a surprise from this group :-)

  OK guys - what do you think?  (also - is the Tennadyne antennas likewise
  constructed?)

  My original post:

  > Greetings,
  >
  >
  >
  > I have been using the Cushcraft 8 element log for awhile (about 1
  month)
  > - see eham reviews (ASL2010) if interested.
  >
  >
  >
  > My question:  This log is a 'grounded' design it seems.  The back
  > (longest) element is grounded to the boom which is of course grounded
  to
  > the mast / tower.  The other 7 elements are insulated from the boom
  but
  > of course connected to the back element.  My observation so far is
  that
  > it seems a bit less noisy than the few yagi antennas I have used.   Is
  > that because of the 'grounded' design?  Will this also be a little
  help
  > with static crashes and perhaps even lightning?  Are most Log Periodic
  > antennas designed like this?
  >
  >
  >
  > My Yagi antennas have always had at least the driven element insulated
  > from the boom and some of them have had all elements insulated from
  the
  > boom.
  >
  >
  >
  > Gary, N5PHT
  >

  Gary Stone, BA, LCDC  J

       Case Manager, DSAP

         O  903 - 583 - 6411

  -----Original Message-----
  From: Bill Gaines AD8P [mailto:ad8p at wcoil.com] 
  Sent: Tuesday, May 01, 2007 6:47 PM
  To: Stone, Gary R.
  Subject: Re: [TowerTalk] qrounded antenna desgin question

  Interesting question Gary. Please pass along any relevant responses you 
  might get. I too am curious.

  Bill AD8P


  ----- Original Message ----- 
  From: "Stone, Gary R." <Gary.Stone at va.gov>
  To: <towertalk at contesting.com>
  Sent: Tuesday, May 01, 2007 1:52 PM
  Subject: [TowerTalk] qrounded antenna desgin question


  > Greetings,
  >
  >
  >
  > I have been using the Cushcraft 8 element log for awhile (about 1
  month)
  > - see eham reviews (ASL2010) if interested.
  >
  >
  >
  > My question:  This log is a 'grounded' design it seems.  The back
  > (longest) element is grounded to the boom which is of course grounded
  to
  > the mast / tower.  The other 7 elements are insulated from the boom
  but
  > of course connected to the back element.  My observation so far is
  that
  > it seems a bit less noisy than the few yagi antennas I have used.   Is
  > that because of the 'grounded' design?  Will this also be a little
  help
  > with static crashes and perhaps even lightning?  Are most Log Periodic
  > antennas designed like this?
  >
  >
  >
  > My Yagi antennas have always had at least the driven element insulated
  > from the boom and some of them have had all elements insulated from
  the
  > boom.
  >
  >
  >
  > Gary, N5PHT
  >
  >
  >
  >
  >
  > _______________________________________________
  >
  >
  >
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  > TowerTalk at contesting.com
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  >
  >
  > -- 
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  > 2:10 AM
  >
  > 
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