[TowerTalk] Feeding a long distance yagi

[Peter Voelpel]

Hi Roger,

Option 1 should be absolutely no problem.
One of my towers is 150m from the house. I put 5/8" and 7/8" surplus
hardline and control cables down the tower and across the property (not
buried).

The 7/8" cable is feeding the logperiodic and the 5/8" cable the
shorty-forty by HyGain. Attenuation is less then 1db on any band.

Catenary suppport of the cables along a steel rope between two towers would
be possible here as well, but laying it on the ground is easier for me.
I am crossing the radial field of my 80m vertical and having all cables
directly on ground reduce any possible interaction and also possible pickup
of electrical noise from the neighbourhood.


73
Peter
 

-----Original Message-----
From: towertalk-bounces at contesting.com
[mailto:towertalk-bounces at contesting.com] On Behalf Of Roger Cooke
Sent: Montag, 17. November 2008 20:50
To: towertalk at contesting.com
Subject: [TowerTalk] Feeding a long distance yagi

Hi Y'all.

  Next Spring I intend putting up a 402CD 2-el 40m beam on an 80ft tower
which is situated about 300ft from the shack. I have considered several
choices of feed systems.

1.  catenary supported low-loss coax, such as Westflex 103, together with
the rotor control cable.

2.  Buried cables, not really possible in this place.

3.  Coax partway down the tower, balun converted into open-wire feeder and
back again to coax at the shack end. Problem with supporting the feeder and
the control cable however.


    After this, I rather run out of ideas, but would be open to any good
suggestions. I rather think that option 1 is going to be my solution
however.
   I don't fancy putting it on top of my SteppIr, which is on a 120ft tower
about 100ft from the shack, but that tower could help support the cables.
Perhaps I already have the solution but would just like someone to confirm
it! Hi.
   Anyway, all comments gratefully received.

Regards from Roger, G3LDI
Swardeston, Norfolk.



      

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