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zone 5 |
ITU
zone 6 |
Grid
Loc: FN41xq |
Lat:
N 41 ° 40 ' 51
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Lon:
W 70 ° 3 ' 26
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ALUMA T-50H
TOWER INSTALLATION SECTION

Part 1 - Permit / Delivery
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The
town approved the tower permit on June 17, 2011. The fee was
$50 and the Building Inspector was very knowledgable on
tower installations, from ham to cell towers. The process
from application to approval was 6 working days. Shortly
after I picked up the permit I ordered the
tower.
The tower,mast
and accessories shipped in a 26 foot wood crate. Shipment departed Monday
August 8th from the Aluma Tower Company in Vero Beach, Florida via YRC Yellow
Freight. Delivery was
Friday August 12th. Russ K1RTA offered his help and
the use of his cement
mixer over after the tower arrives. Thanks! Russ
recently purchased the same model used tower from a local
silent key estate sale. Here are his
photos
on QRZ.com.
The
tower is here! |
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The crate size was 26' X 2' X 2' and weighs 796 pounds!! uuggghhhh!
Russ K1RTA Pulled the crate with his vehicle and dragged it onto the
driveway.
The crate size seems intimidating but it was easier than we thought.
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Russ,Joe and I dismantled the crate. It was easy with 1/2" pine and
thin
staples.
Most of the weight was the MP-2 Ground Post and lots of pine wood.
The tower was only 100 pounds!
My wife, Elaine KB1VAJ took the photos.










Unloding time 2 hours.
Aluma Tower did a great job crating the tower to ship.
The company sells a great product and it is well worth the money.

Part 2 - The Foundation
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A
few days after I received the tower, Russ came over and we
began work. The foundation size is 44"w x 34"d x 36"h.
That's rather large for a T-50h tower (standard size is 30" x 30" x 36").
We made the foundation larger due to more sand here on
Cape Cod and when
the contractors built this home they must have used sand to fill around the house.
At least it was easy for us to shovel. Two hours and 20 wheelbarrows later we cut
part of the wood
crate into 36" x 10" boards to form the foundation.
The wood is held together with screws and will be removed just after
the concrete pour. My last tower project was in the Syracuse area
back in the 1980's, lots of clay, mud and rocks. |
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42 bags of Quikrete was delivered yesterday, August 19th. I'm
assembling the rebar cage
and mounting the foundation screws to the T-Base today.
Tomorrow we will mount the MP2 ground post and rebar cage
and then pour.
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MP 2 Ground Post and Rebar
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Time to pour the concrete...
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Russ and TJ poured most of the bags of concrete but we needed more (below)
Elaine and I
bought 16 more bags.
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30 minutes after the pour, Russ troweled and we installed the T-Base.
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Finished!!

n2knl-Aluma%20Tower%20Foundation3.jpg)

Part 3- Tower Installation
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Before
connecting the tower to the T Base, i'm installing a 3,000 lb.12 Volt DC Full
Braking ATV Winch from
Harbor Freight in Fall
River,Ma., a
NAPA Deep Cycle Marine Battery
/
Battery Box, and a
Battery
Minder Charger/Conditioner .These items will
replace the manual winch that comes with the tower.It takes too long
to hand crank,especially in an approaching storm. As for raising and
lowering the tower, I'm using the worm gear winch that comes with
the tower. A high torque cordless drill should be sufficent. Gotta'
love that aluminum!
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The Winch


The winch remote will be mounted inside the coax junction box.

Pulley and Eye Bolt connected to the MP2 Post


Test and partial raising of the tower!!
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Part 4 - Grounding, Guying, Rotor, Antennas and Coax
Tower Grounding

Shoveled two 15 foot trenches and installed 2 8 foot galvinized ground rods
and cable to the tower legs.
There are NO ground connections to the rebar. Any lightning
discharge will take the path to the ground rods.
I read from other tower installers, If lightning discharges through
the concrete, it could possibly crack it.




Tower legs, MP2 post and Coax Enclosure Box grounded to the 2 8 foot
ground rods.

Tower Guying

4 foot galvanized screw anchors / Galvanized shackles / T 304
stainless turnbuckles /
3/16 inch stainless guy cable and u bolts

Rotator Wiring
Solder 6 wires to the 2 connectors of the Yaesu G800DXA Rotator


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Test and calibrate all functions.
I'm impressed how light weight and quiet the rotator operates.
Different from my old HYGain T2X.
The T2X is still a great rotator,but with improved technology,
you can't beat the G800DXA at a cost of under $500.
The braking mechanism is extremely quiet! The preset
memory and speed adjustment are nice features too.

Spraying White Lithium Grease on rollers

Weather proofing the rotator wire with electrical tape then coax
seal

Protecting the thrust bearing with a 2" x 4" prumbers boot

The 6 meter yagi ready to go


Mounting the Davis Weather Wind Sensors
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ANTENNA LAYOUT

Tower (Shown Nested & Guyed)
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Cushcraft
13B2 13 Element 2 Meter Yagi
Cushcraft A50-5S 5 Element 6 Meter Yagi
Davis Weather Station WEATHER MONITOR 2 Model 7440 |
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30' Mast (Guyed)
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Wineguard 8 Element Broadcast FM
Yagi
HyGain 5 Element 2 Meter Yagi (Scanning and Backup 2 Meter
Antenna)
Wilson 800 MHz Yagi (Scanning Antenna) |
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Roof Vent Pipe
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45
MHz Vertical Antenna (30-54 MHz Low Band Scanning Antenna)
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Chimney
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Homebrew
40 Meter Dipole (4:1 Balun at
mast. Each end with pulleys to tree trunks).
2 Davis Weather Stations...
VANTAGE PRO Model 6150C
WEATHER MONITOR 2 Model 7440
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GROUNDING ENCLOSURE

WIRING LAYOUT
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RED
- 800 MHz Wilson Yagi (Scanning Antenna)
ORANGE -
HyGain 5 Element 2 Meter Yagi (Scanning and Backup 2 Meter
Antenna)
YELLOW - 45 MHz Vertical Antenna (30-54 MHz
Low Band Scanning Antenna)
Red, Orange and Yellow Coax feeds a Diamond MX-2000
Triplexer with one coax run into shack for scanning radios.
BLUE -
Cushcraft A50-5S 5 Element 6 Meter Yagi
LIGHT GREEN - Cushcraft 13B2 13 Element 2
Meter Yagi
DARK GREEN - Wineguard 8 Element Broadcast
FM Yagi
GROUND STRAP - Connected to Steel
Panel,Tower,MP2 Post, 30' mast (with antennas) and two 8'
Ground Rods.
WINCH HANDHELD REMOTE CONTROL - For tilting
over the tower.
RYOBI 19 VOLT CORDLESS DRILL / 7/8" Socket
- For raising and lowering the tower.
ALLIED ELECTRONICS-Bud
Industries Electrical Enclosure
&
Steel Panel |
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WINCH WEATHER GUARD

Two stainless clips clip onto the aluminum plate and slide down and
hold the plastic container in place.





Synthetic Waterproof Gease was applied to the threads and gears.

TOWER PROJECT COMPLETE
Tower Cranked Up
Raises in 20 seconds
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Tower Nested






BUYING A NEW MOSLEY TA-53-M HF YAGI
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The
last antenna to go on the tower will be a new
Mosley TA-53-M HF Yagi.
It covers the 20-17-15-12 and 10 meter bands. I'm not
getting the 30/40 meter conversion kit. I chose this antenna
because of the high gain on
all 5 bands. It will be below the 6 meter yagi.
I'll continue operating the 80, 40 and 30 meter bands with
the 40 meter dipole.
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Alumatower.com

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My
First Tower Installation
I installed
my first Rohn 25G tower back in 1984 and at my
second home in 1989, both in the Syracuse, NY area. I
purchased a new 38 foot tower from a Rohn Distributor in Rome,
NY. Both installations were easy. I think I paid about $350
for the tower, house bracket and 3 foot base tower
section! The 3 x 3 x 4 foot deep trench only took a couple of
hours to shovel, including 2 x 6 inch framing. I bolted the
house bracket and shoveled 8 inches of crushed stone into the
bottom of the trench, then set the 3 foot base section and
two10 foot sections into the trench. I bolted the tower
sections to the house bracket. Once the sections were plumb
and level, I finished shoveling in the last 4 inches of stone
keeping the tower legs free of dirt and any water that will
crack the tower legs in freezing weather.
I mixed bags of concrete mix in a wheel burrow and poured on a
dry warm cloudy day. Here is a photo of my 1989 tower install
which was taken just before I got my amateur radio license.
Antennas include VHF and UHF TV Channel Master antennas
and a Hy Gain Tailtwister T2X Rotor. To the right, Channel
Master FM Stereo Probe 9 FM stacked antennas. Heathkit ID-4001
Wind instruments are on the chimney. Multi-band scanning
ground plane antenna to the left of the chimney.

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