HomeMy WebLinkAboutPROJECT DETAILS - US CELLULAR - 1554 S 2nd EUS Cellular
Antenna Upgrade Project `03/'04
Site Name: Rexburg
Site Number: 684321
Site Location: 1554 S 2 E, Rexburg
Site Legal: Sec 32, T6N, R40E
Tower Height: 120'
Tower Type: Self-support lattice
Proposed Improvements:
1. Add three BXA-80063-8CF antennas (94.7"x11.2"x4.5") at approximately 110'above
grade.
2. Add six lines of 7/8" diameter coaxial cable from the antennas to the existing
equipment building.
3. No on grade improvements.
Structural Certification (attached): by Artisan Engineering dated October 3, 2003
Site Name: Rexburg
GROUND
NG i{:tiNO GROUND
5'-8"
G
(H)'".0,
@ #_ q ; �.,.:..._ ICE. BRIDGE
FOR-
.. ......
10 5 0 10 20
SCALE: 3/32" = 1'-0"
WRELESS
SUITE 140 HOUSTON, TRA"," A",i J l040 PHONE,
FAX: 71%-690-5037
SITE LAYOUT DIMENSIONS & NOTES
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4EIN, EYRt, IDYNAMICS NETWORK SYSTEMS
684321 - REXBURG
6300 R' TWWA °aT .s HOUSTON,
TEXAS 7F704;
(71 31) 934 5118 fax 934 €37"r2
4ft bin T❑P FACE ❑F WIDTH
OMNI ANTENNA @ 113ft Oin C,L,A,G,L,
OMNI ANTENNA @ 100ft Oin C,L,A,G,L,
N/A WIDTH ❑F BOTTLENECK
MICR❑WAVE @ 82f Oin C,L, A.G,L
20f Oin WIDTH ❑F BASE
REXBURG
T❑P OF STEEL/STRUCTURE HEIGHT 122f Oin A,G,I
MICR❑WAVE @ 117ft Oin C,L, A.G.L.
OMNI ANTENNA @ 113 -Pt Oin C,L,A G,L,
OMNI ANTENNA @ 10042't Oin C,L,A,G,L,
IGHT ❑F BOTTLENECK N/A
MICR❑WAVE @ 83ft Oln C,L, A,G,L,
CAISSON HEIGHT 1 -Ft Sin
US Cellular
Antenna Upgrade Project `03/'04
Site Name: Rexburg
325 W. 13th Ave. Eugene, OR 97401-3402
(541) 338-9488 Tel (541) 338-9483 Fax
www.artisanengineering.com
October 3, 2003
Mr. Joe Head
US Cellular
7600 N E 41 st Street, Ste 325
Vancouver, WA 98662
Re: Structural Review —150 -foot Self -Supporting Tower at the Rexburg Site for Proposed US
Cellular CDMA Antenna Installation
Dear Joe:
Artisan Engineering has completed a structural review of the original design documents,
existing antenna configuration, and the proposed US Cellular CDMA installation. The
document review was for the 1993 Fort Worth Tower design and the recent tower mapping
completed by General Dynamics. The purpose of the review was to determine if sufficient
capacity exists in the tower to allow the proposed US Cellular CDMA panel antennas to be
installed without need for an additional tower analysis.
The 150 -foot tall self-supporting tower is constructed of steel pipe leg and single angle
diagonal members. The tower was originally designed for 100 mph wind loading, in excess of
the local County requirements, with Y2 -inch of radial ice loading. It was also designed to
support (2) cellular antenna arrays on platforms and included (5) microwave antennas located
high on the tower.
The existing antenna loading consists of (4) omni -directional antennas near the 100 -foot level
and (3) microwave antennas as noted in the tower mapping report. By inspection, it is obvious
that the tower has sufficient reserve capacity to support the proposed US Cellular CDMA
panels with no need for analysis, upgrade, or any other structural concerns. We recommend
that the US Cellular antennas be installed as proposed and the antennas database for the
tower be updated accordingly.
We have enjoyed working with you on this project. If you have any additional questions,
comments, or concerns please feel free to call.
Sincerely, j,' �A
i 1 h i,�,l�"l'
Timothy Wolden, PE
Principal, Artisan Engineering, LLC
Attachments: Original Tower Design Criteria, Current Mapping List
Projects Letter to Joe Head for the Rexburg Tower.doc
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Mechanical specifications
Length
2405 mm
94.7 in
Width
285 mm
11.2 in
Depth
114 mm
4.5 in Radiation -pattern')
Weight
10.89 kg
24.0 lbs
Wind Area
2) Power Rating
..110-100 -90 -90 70
Front 0.695 m2 7.46 ft2
Side 0.278 m2 3.00 ft'
Rated Wind Velocity (Safety factor 2.0)
>333 km/hr >207 mph
Wind load @ 100 mph (161 km/hr)
Front 1048 N 236 lbs
Side 510 N 115 lbs
Mounting
Through two pair of clamps to pipe diameter 050-
160 mm (2.0-6.3 in), or by U -clamps to a 2" pipe.
Antenna consisting of aluminum alloy with brass
feedlines covered by a UV safe fiberglass radome.
Mounting Bracket: #36210002
Downtilt Bracket: #36114003
Electrical specifications
Frequency Range
806-900 MHz*
Impedance
5052
3) Connector
N, NE, DIN, E -DIN
'l VSWR
<_1.4:1
Polarization
Slant ± 45°
'i Isolation Between Ports
>30 dB
'l Gain
16 dBd
2) Power Rating
500 W
'i Half Power Angle
H -Plane
63°
E -Plane 7°
'f Lobe Tilt 0° -
I Null Fill 5%
Lightning Protection Direct Ground
*Also available up to 960 MHz. Consult your
Antel sales director for more information.
Typical Values
'r Power Rating limited by connector only.
a) NE indicates an elongated N Connector.
E -DIN indicates an elongated DIN Connector.
Improvements to mechanical and/or efectrical performance of the
antenna may be made without notice.
BXA-80063/8CF
-120 -60
-130 -50
-140 -40
-150e4.3
16020
-170-10
180 0
17010
1600
150
140
13050
1p 60
110 100 90 80 70
Horizontal
-110-100 -90 -e0 -70
120 -60
'30
-50
-140 -40
-150 -30
60 -20
170 -10
190.5 30 z5 20 15 10 0
,70 10
len 20
160 30
140 40
190 50
20 60
110 100 90 90 70
Vertical
Radiation patterns for all Antel
antennas are measured with the
antenna mounted on a fiberglass
pole.
Mounting on a metal pole will typ-
ically improve the Front -to -Back
Ratio.
CF Denotes a Center -Fed
Connector.
1300 Capital Drive Rockford, IL 61109 Toll -Free (888) 417-9562 Tel. (815) 399-0001
Fax. (815) 399-0156 Email: antel@antelinc.com www.antelinc.com
When ordering, replace with connector type.
Antel's Exclusive 3T
(True Transmission
Line Technology)
Antenna Design:
• Single -piece, watercut brass feedline
assembly for consistent performance.
• Unique single -piece feedline design elimi-
nates the need for solder joints in the
signal path.
• A non -collinear system with access to
every radiating element for broad band-
width and superior performance.
• Air as insulation for virtually no internal
signal loss.
Every Antel antenna is under a five-year
limited warranty for repair or replacement.
Antenna available with center -fed
connector only.
r..
Revision Date: 2/21/03
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