[TowerTalk] Shunt feeding with SteppIR on top

[Howard K2HK]

Ryan,
A few years back I had a pair of 4 el Steppir"s on an 80 ft tower with a vhf vertical on top. I made no modifications to the Steppir"s. Never had a problem and worked very nicely. I had 2 separate shunt feeds for 80 and 160. I used  1/4" CU tubing for the shunt wire and vacuum variables for each.

Howard..K2HK 




> Date: Sat, 6 Nov 2010 19:26:48 -0400
> From: rjairam at gmail.com
> To: towertalk at contesting.com
> Subject: [TowerTalk] Shunt feeding with SteppIR on top
> 
> I've been reading the Antenna book and toying with the idea of shunt
> feeding my tower for the low bands.
> 
> My current tower is a 70 footer self supporting with a SteppIR MonstIR
> on top.  The top of the mast is at 86 feet (5 feet inside the tower to
> the rotor, 21 foot mast). I have a VHF/UHF vertical for repeater work
> on the top.
> 
> Has anyone shunt fed a tower with a SteppIR? What sort of issues did
> they run into?
> 
> How effective will it be on 75/80? What about 160?
> 
> Ryan, N2RJ
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