Kallol Ghosh

Submitted by: Kallol Ghosh

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A Presentation About Outdoor Installation

Kallol Ghosh

INTRODUCTION

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A cell site is a site where antennas and electronic communications equipment are placed, usually on a tower or other high place, to create a cell (or adjacent cells) in a cellular network. Cellular (cell) phones first became widely available in the United States in the 1990s, but since then their use has increased dramatically. The widespread use of cell phones has led to cell phone towers being placed in many communities. These towers, also called base stations, have electronic equipment and antennas that receive and transmit radio frequency (RF) signals. According to the RF Plan we have to install the antenna at a proper height on tower. Installation procedure is different for many others company, but there are no any complexity regarding that installation. In case of Nokia Siemens Network they don’t use any loop or bend on RF cable. Reliance don’t use any Jumper cable for a cell site. In this presentation we have discussed about the installation procedure and quality point of outdoor equipments.

Kallol Ghosh

INDEX

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TITTLEInstallation & Quality Point

PAGE NO

RF Plan & Requirement List 4-5

Antenna Line 6

Antenna Installation & Quality Point

7-11

Jumper cable Installation & Quality Point

12-16

RF Cable & Connector Installation & Quality Point

17-23

Weather Proofing Kit 24-25

Earthing kits 26-29

Roxtec 30-31

Surge Arrestors 32

Cable ties 34

Labels 35

Kallol Ghosh

RF PLAN:

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Name: Kallol Ghosh

RF PLANSITE NAME : TECHNO CENTRE

SITE ID : A234M08

ADDRESS : 35, B.C.ROAD, BURDWAN,W.B.

PARTICULARSSITE 1 SITE 2 SITE 3

AZIMUTH60° 180° 300°

HEIGHT 40m 44m 48m

MECHANICAL TILT 0° 0° 0°

ElECTRICAL TILT 3° 6° 2°

TYPE OF THE ANTENNA X43210 X01234 X21034

Requirement List :

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particulars Specification Status

1.Antenna GSM900 Panel Antenna,65°beam width , cross polarized antenna

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Jumper Cable 1/2" diameter, 1m, 3m, 7/8"M & 7/8"F connector

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RF Cable or Feeder Cable

7/8", copper RF Cable 300m

RF Connector 7/8”M 12

Earthing Kits Copper strips, Ring type copper lugs 12

RF Clamps, cable ties Six way 35,100

Grounding Cable 35sq.mm. y-green grounding cable,16sq.mm. green grounding cable

108m8m

Roxtec and Screw 4 way, Full thread steel screw 1,8

Surge Arrestors ------- 6

Weather Proofing Kits PVC(6cm),Rubber,Butyl 3

Labels 100

Kallol Ghosh

Antenna Line:

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Antenna

Jumper cable

Rf to jumper connector

Earthing kit

Rf clamp

Rf cable

Roxtec

Cable tray

Egb

The line between the Antenna and the BTS is known as antenna line

In antenna line there are following things:

• Rf cable• Rf connector• Jumper cable• Earthing kit• Weather proofing kit• Roxtec• Surge Arrester

Kallol Ghosh

:PROCEDURE TO INSTALL AN ANTENNA

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First we have to make the connection between antenna port and jumper cable and connection should be weather proofed, and other end of jumper cable should be covered by polythene. If we give mechanical tilt then it should be done at bellow, electrical tilt should be avoided at this condition because, it should be change by touching the tower body.

Kallol Ghosh

ANTENNA INSTALLATION :

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We have to take the antenna up on tower with the help of pulley or rope Keep the antenna away from tower body by pulling the rope carefully.

Kallol Ghosh

BTS

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According to the RF Plan we have to set the antenna at proper height with the pole mount by using the antenna clamps with the appropriate electrical tilt. Antenn

a

Jumper ConnectorJumper Cable

35sqmm yellow green grounding cable

VCT

RF connector & Jumper connectorEarthing

Kits

EGB

RF Cable

HCT

Earthing kit

S-bend

Surge Arrestor

I/D Jumper cable

IGB EGB

Kallol Ghosh

Quality Check Point Of Antenna

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Height of the antenna as per the RF Plan

Tilt of the antenna as per the RF Plan

Type of the antenna as per the RF Plan

Azimuth of the antenna as per the RF Plan

All the nuts bolts of the antenna should be properly

Lock nuts should be provided

Label should be provided of the back of the antenna

Electrical tilt

Mechanical tilt

Nuts bolts or lock nuts

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Label should be provided of the back of the antenna

Type of the antenna as per the RF Plan

GSM 900 Antenna

Single port antenna Dual port antenna

Hex port antenna

Quad port Antenna

Kallol Ghosh

Specification of Jumper Cable:

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Size - ½ inches Inner core – Pure copper

cylindrical tube of ½ inches filled with Aluminum.

Outer core – Pure Copper cylindrical tube like spring.

Soft Insulation – White soft foam.

Hard outer insulation – Black insulation material.

Impedance – 50Ω. Flexibility- High. Length- 1m ,1.5m, 2m, 2m.5m,

3m, 5m, 7 m,10m, 15m.

Inner core

Soft insulation

Outer Core

Outer insulation

Kallol Ghosh

JUMPER CABLES INSTALLATION :

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Jumper cable

RF connector

RF Cable

Now routing the outdoor jumper cable properly by using the cable ties and connects it to the RF Cable by using the 7/8”M RF connector. Indoor Jumper should b connected with BTS port.

Kallol Ghosh

Combination of connector in Jumper cable:

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1. 7/8 F – 7/8 M2. 7/8 M – 7/8 M3. 7/8 F – 7/8 F4. 7/8 M – 7/8 L.M5. 7/8 M -7/8 L.M

Apart from these some more arrangements are

1. 7/8 M – 7/16 M2. 7/8 M – 7/16 F3. 7/8 F – 7/16 M4. 7/8 F – 7/16 F

Outdoor jumper cable – 3mIndoor jumper cable - 1 or 1.5 m

½” Jumper cable

Kallol Ghosh

Quality Check Point Of Jumper Cable:

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In case of U-Loop of both jumper cable should be parallel

There should not be any sharp bend in the jumper cable

In case of close loop there should be two cable ties at the touching point

Routing of Jumper cable should be done by using cable ties

Distance of the two cable ties should be uniform and approx 200mm.

At the bend in the Jumper cable at least two cable ties should be provided at touching edge

Parallel U-loop

Close loop

Cable ties

Cable ties

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Labeling should be done with both the end of jumper cable

Routing of Jumper cable should be together and along with the tower body

Termination of Jumper cable should be verified by VSWR measurement

Last hand of PVC tape should be bottom to top

Labeling on Indoor jumper cable

Proper taping on jumper connector

Kallol Ghosh

Specification Of RF Cable:

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• Size of the inner core is equal to the size of normal co-axial cable.

• As it’s a hollow , so it increase surface, decrease resistance, increase capacity, increase flexibility, lesser cost

• Inner Core : Pure Copper.• Soft Insulation : Fume• Outer Core : Pure Copper Cylindrical Tube.• Outer Insulation : Hard Insulation , black in

color.• Size Of The Cable : diameter 5/4” or 7/5”• Impedance : 50Ω

Feeder Cable

Inner core

Soft Insulation

Hard outer insulation

Outer core

Kallol Ghosh

RF CABLES INSTALLATION FIXING THE RF CABLES WITH RF CLAMP:

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Cable tray

RF clamp

Weather proofing tape

After that we have to place the RF Cable sector wise on the cable tray by using the RF Clamp (6-way), and mark on the RF Cable according to the sector .

Kallol Ghosh

RF Clamp:

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1 way RF clamp

2 way RF clamp

3 way RF clamp

6 way RF clamp

C-clamp made of GI

Dummy clamp

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Now the bending portion of RF cable should be carefully placed by using a dummy clamp at the junction point between VCT and HCT. Then another earthing kit should be attached along with RF cable by using the cable ties and then RF cable should be placed on HCT by using the RF clamp. Earthing kit should be straight to the shelter and connect the grounding cable with EGB properly

Bending portion of RF cable

EGB

Roxtec HCT

RF Cable

RF CABLES ConnectorCONNECTION BETWEEN RF AND JUMPER:

Quality Point:

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Routing of RF cable through the RF clam should be according to the sector, there should not be any cross routing of RF cable.

Connection should be made properly and attach the weather proofing tape properly

Connection should be made by hand tight.

Kallol Ghosh

RF Connector :

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Base Outer

Port

BaseOuter

7/8’’ female connector7/8’’ male connector

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Quality Point Of RF Cable:

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There should be a label on RF Cable near RF to Jumper cable, and RF and Roxtec

Position of RF Clamp should be uniform from the either edge of cable tray

Routing of RF cable should be in pair and parallel

Distance of the two RF Clamp should be 0.9 or 0.6 on HCT.

Labeling of RF cable in side the shelter and outside the shelter should be visible from bottom

Routing of RF cable through the RF clamp should be according to the sector, there should not be any cross routing of RF Cable.

Bending of RF Cable should be greater than 300mm

S-Bend on RF Cable should be properly

Labeling on RF cable

S-bend

Parallel Routing

No cross routing, Sector wise place

Kallol Ghosh

WEATHER PROOFING

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All ourdoor antenna line connections, grounding kits and wall entries have to be weather proofed. Connections where weather proofing is needed:

Feeder to jumper at antenna end. Feeder to antenna

• Direction of last hand of PVC tape should be bottom to top.

PVC Tape

Kallol Ghosh

WEATHER PROOFING:

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FEEDERS WEATHER PROOFING KIT (BUTYL TAPE,3/4” PVC TAPE & ,2” PVC TAPES ), THESE ARE SET OF ONE KIT

1.Connection should be tape using PVC tape.

2.Connection should be sealed by using Rubber tape.

3.Connection to be tape by using PVC tape again.

Kallol Ghosh

EARTHING KITS & GROUNDING CABLE:

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Earthing Kit

External Jumper

Feeder Cable

Antenna

Grounding Bar

(Normally 1.5m, - see Appendix 2)

200mm < d < 2000mm

d

Jumper Cable orAntenna Connector

Ground Cable to MainSite Ground System

Ground Cable (Tail)600mm long

RF Cable

Note: Grounding bar should be fixed directlyto the tower where the tower is itselfthe main ground down-conductor!

Ground Cable to MainSite Ground System

Alternative Orientationfor Grounding Bar

Earthing Kit

Jumper Cable orAntenna Connector

Kallol Ghosh

EARTHING KITS

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EARTHING STRIP & CABLE

All earthing kits should be attached bellow 1m from lowest RF connector, along with the RF Cable in same position on VCT by using the cable ties, and earthing kits should be connected to EGB. EGB should be grounded properly.

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EARTHING KIT ,(IT INCLUDESEARTHING STRIP,CABLE,WEATHER-PROOFING KIT).

1.The earthing kit must always be taken together with RF Cable.2.All earthing kits should be made in same location.3.One earthing kits should be terminated to the one hole of EGB.

Kallol Ghosh

Lugs & Strips :

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Copper strip

Aluminum strip

There are three types of lugs 1) I-type 2) Pin type 3) Ring type

Strips and lugs should be same material.

Kallol Ghosh

Roxtec: Quality point

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1. Arrangement of RF Cable should be sector wise.2. Routing of RF Cable should not be crossed with

each others3. 4 Robber boots are there, each and every boot

present a hole.4. Corner should be sealed by using silicon gel5. Full thread steel screw of size 1-1.5” should be

used

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RF Cable should be entered into the roxtec and mark the position of RF Cable then it should be removed from roxtec and cut the mark point on RF cable and connect the 7/8”M connector. Now finally we insert the RF cable into the roxtec and connect it with Surge arrestors in same location according to sector wise. After that we have to make an s-bend on RF Cable near the roxtec.

Kallol Ghosh

Surge Arrestors:

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Position of all the surge arrestors are in same.

Now other end of surge arrestors should be connected with indoor jumper cable and route it on the indoor cable tray by using the cable ties.

Kallol Ghosh

Quality Point Of Surge Arrestor :

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All the termination of Surge arrestors and jumper cable should be hand tight

Position of all Surge arrestors should be in same size

Grounding cable termination on surge arrestors should be properly tight.

Routing of Grounding cable should be along with the same RF Cable.

Position of Grounding cable should be bottom of the RF Cable.

Each Grounding cable should be terminated to EGB.

Same position

Grounding cable bottom of the RF cable

Along with RF cable

Cable Ties: Quality Point

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1. Routing of Jumper cable should be done by using cable ties

2. Distance of two cable ties should be uniform and approx 200mm to route a jumper cable

3. Position of knot and direction of knot for cable ties should be in same .

4. Unused portion of cable ties should be cut on

Kallol Ghosh

Labels: Quality Point:

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1.Labelling on the RF Cable in both inside and outside the shelter should be visible from bottom.2.Labels should be provided at the both end of jumper cable.3.It should be provided of the back of the antenna.

Kallol Ghosh

Thank You

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