Andrew Type 960 Class I & II Manual de usuario descargar pdf (Pagina 31)

3.3 TOWER A/T

Tie Beam

Soil

Rest

Platform

Concreting 6

’

-8’

Anchor Plate

Ring Earth

3-3.1 1] SACFA clearance: - What is SACFA?

Standing Advisory Committee for Frequency Allocation, Headquarter is at Delhi and

regional offices are at Mumbai, Chennai and Hyderabad. Main function of SACFA committee is to

allotted the frequency and spectrum to M/W system / GSM- BTS Network, taking into consideration

the interference due to other nearby Radio frequencies. The application should be submitted for full

sitting clearance in form no. WPC –S2 along with map to the following agencies.

1] SACFA Secretariat Forms ---- WPC –S1 for exemption from mast height

2] Each SACFA member clearance.

3] Concerned RAC member. WPC –S2 for full sitting clearance

WPC – S3 for an additional antenna.

As per revised SACFA procedure dated 5.8.1997 an ID (Identification no) should be obtained first.

2] Type and height of tower: - There are three types of tower,

- GBT: - Ground base tower.

- RTT: - Roof top tower

- Pole: - Pole type tower.

GBT: - further classified as: - Light weight LW

Heavy weight HW

Special heavy weight SHW.

LW – It is a narrow base self supporting tower, Leg to leg distance 1.99 meter and diagonal distance

2.7 meter, used for MARR,GSM, CDMA ,in low traffic routes where there is no possibilities of

future loading.

Capacity: - 4 Nos. of 3 M Dia. or 2 No. of 4 M Dia.

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Andrew Type 960 Class I & II Manual de usuario Pagina 31