[amsat-bb] Re: Antennas: How High?

Greg D. ko6th_greg at hotmail.com
Sat Jul 11 16:44:44 PDT 2009

Hi John,

You might consider putting a short tripod on the roof itself.  That's
what I did.  2-story house, and too many trees adjacent to the house to
put up any sort of tower (and not counting the inevitable XYL objections).  

Here's what I did:  http://home.wavecable.com/~ko6th/IMG_0141b6.jpg  It basically just sits on the roof, and is kept from sliding by being anchored to a vent pipe.  The base is 8' wide, with a 4' "T" piece going up to the pipe.  The vertical part is about 6' tall, which gives the tail of the 70cm beam just enough clearance from the roof for overhead passes.  Never had a problem with stability.

Good luck,

Greg  KO6TH

> Date: Sat, 11 Jul 2009 13:19:25 -0700
> From: harry at gunship.org
> To: amsat-bb at amsat.org
> Subject: [amsat-bb]  Antennas:  How High?
> Guys,
> I want to upgrade from my hand held Arrow to something permanently mounted outside with and Ele/ Az rotor.
> I have a single story home with roof peak at about 22 feet.  I can easily mount a 10' - 20' mast directly outside the shack anchored in concrete and bolted to my roof eaves.
> If I use two  masts sections I will get a net height of about 17' which means I will be "looking" through my roof on the lower easterly orientated passes.  Gaining the additional height to completely clear the roof line will be increasingly problematic.  How much should I be concerned about this, etc?
> I'd like some real world feedback / suggestions.
> Thanks in advance.
> 73 de harry, W6DXO
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