[NLRS] Fw: Mounting omni loops to tower legs

Wed, 31 Mar 2004 17:27:50 -0600

  Hi NLRS'ers.  Sorry for any cross-posting that might occur, but I'm =
trying to get a few opinions here in the next 36 hours. =20
  Thanks for reading,=20
  73,=20
  Todd  EN63ao

----- Original Message -----=20
From: Todd and Sandy Sprinkmann=20
To: [email protected]=20
Sent: Wednesday, March 31, 2004 5:24 PM
Subject: Mounting omni loops to tower legs

  On Friday, I'm going to be mounting the Par OmniLoops I have on the =
side of my house to a better location on the side of a 100' tower.  They =
are a 2-stack of 6m loops and a 2-stack of 2m loops.

  The tower guy has concerns about how having them mounted to a tower =
might compromise their pattern or change tuning drastically.  I called =
Dale at Par and he said that while I might notice the resonant freq. =
change a little, he emphasized I could mount the loops directly to the =
tower leg. =20

  I'm asking anyone here who has experience with this matter to share =
their experience.

  The section of tower that we would be mounting to is perfectly =
vertical, so the loops would be directly above each other, per the =
instructions from Par.  I plan on keeping the current spacing of roughly =
13' for the 6m loops and roughly 4 1/2' on the 2m loops.  I assume =
(always a little dangerous, hi) that if I simply put the 2m loops =
proportionately inside the 6m loops (the way I've seen rovers do it) =
that will be fine. =20

  Just concerned about whether the loops should be offset from the tower =
a certain distance.  And whether if I go ahead and mount them directly =
to the tower leg, will performance change appreciably.

  Looking forward to replies as the tower guy has some time on Friday,
  73,
  Todd  KC9BQA  EN63ao

  PS:  For those of you who have helped me with various questions over =
the past year or so, thanks much.  The beams at 100-115' for 50, 144, =
222 and 432 are up and ready for some spring and summer propagation.

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