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¤t=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@live.com>
To: "Towertalk" <towertalk@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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