[TowerTalk] Change in SWR

[Doug Scribner]

Thanks Steve!

Between your's and Gerald's comments, I definitely will drop the 160 Dipole and see what happens...

And BTW, your past education on the Pro series being so sensitive has dissuaded me from putting anything above it...

K1ZO



  ----- Original Message ----- 
  From: K7LXC at aol.com 
  To: towertalk at contesting.com ; dscribner at myfairpoint.net 
  Sent: Tuesday, December 03, 2013 11:56 AM
  Subject: Re: [TowerTalk] Change in SWR 


  >  Six weeks ago I finished my second tower... 66 feet of guyed Rohn 45. I have a Mosley Pro-67B @ 68 feet and an 80 Meter Inverted V, with the apex at 64 feet.

  >  The only addition I have made is to add a 160 Meter Low Dipole for receive. It is 10 feet high with the feedpoint at the tower.

  >  Is there a chance that it is interacting with the yagi 58 feet above it? I grounded the feedpoint of the dipole with no change.

  Howdy --

      You said it yourself - you put a low dipole up. My experience has been that the PRO Mosleys are VERY sensitive to anything metallic - particularly antennas - in the near field. You can't even put a 2M vertical above the Mosley without messing it up.

      OTOH your new SWR doesn't seem too bad to me but the new antenna might be disrupting whatever pattern the PRO has. If you're worried about it, put the dipole up for 160M operation (e.g contests, etc.) and take it down for other HF operating. 

      No snarky comments on Measly antennas at this time.

  Cheers,
  Steve     K7LXC
  TOWER TECH