[TowerTalk] AN Wireless HD tower installation advice needed

KD0Q-Glenn kd0q at traer.net
Sun Sep 16 13:07:14 EDT 2012


Hi Mat,

I put up an HD-80 in 2008 and had some of the same questions you did.  There 
are pictures on the AN Wireless site that can help some.

I used ratchet straps to snug the base to the blocks.  Didn't figure they'd 
cause any problems encased in concrete.  I also clamped the top of the base 
to long 2x10s to keep it from turning.  In all, every thing went well and 
nothing moved. 
http://s171.photobucket.com/albums/u291/gathorne/Tower/?action=view&current=P1010025.jpg

As for feedline, I just tape cables to a tower leg.

ICE used to sell mounting bars on which you could mount either N or UHF 
connector grounding blocks.  I mounted a bar across two legs top and bottom 
of the tower - had to drill a couple of small holes at each place for the 
mounting bar.  Looking back, now I'd just mount an aluminum angle drilled 
for UHF bulkhead bulkhead adapters.

Grounding is accomplished using a common ground lug under the first bolt of 
the base to first section connection.  I got some Stainless steel shim 
material (0.030?) and made washers to fight the dissimilar metal issue.

73, Glenn/KD0Q

----- Original Message ----- 
From: "Mat Eshpeter" <kk1c at live.com>
To: "Towertalk" <towertalk at contesting.com>
Sent: Sunday, September 16, 2012 7:50 AM
Subject: [TowerTalk] AN Wireless HD tower installation advice needed


>
> I will be ordering an HD60 from AN Wireless on Monday for my windy and 
> lightning-prone ridge top WV location and have some questions regarding 
> installation:
>
> 1. It looks like the preferred way to support the base prior to concrete 
> is to rest the base on cinder blocks. Are there other tricks needed to 
> keep the base level and immobile during the actual concrete pour? Perhaps 
> I need to use rebar ties to fasten the tower base to the rebar cage? I am 
> paranoid about having the base shift during the pour and creating a 
> "leaning tower of Pisa" in my yard.
>
> 2. How did you run your feedline up the tower -- are there suitable clamps 
> available? The profile of the legs looks makes me think some ingenuity 
> will be needed.
>
> 3.  Grounding coax at top of tower - Same tower leg profile challenge. I 
> have only found products that are suitable for tubular shaped tower legs. 
> So how do you securely bond the shield to the tower leg of an AN Wireless 
> tower? Example: http://www.dxengineering.com/parts/dxe-cgb-150
>
> 4. Grounding base of tower to ground field - I have 2/0 solid copper that 
> I need to connect to the tower legs at the base. Same tower leg profile 
> challenge. The tower is galvanized so I need some sort of stainless steel 
> plate to separate the galvanized tower from the copper; and I need to 
> figure out how to make a solid connection of the ground wire to the tower 
> legs. I have no idea how to make this connection.
>
> Thanks for any advice.MatKK1C
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>
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