Provision of replacement of batteries, antenna etc of 5W walkie talkie; battery and surge arrester for 25 W VHF set in Kharagpur Division.

A-Telecom Execution and Supply (SOR Items) 4298115.00 Below/P

B-Telecom Execution and Supply (Non SOR Items) 1638619.00 Below/P

Item Breakup - A-Telecom Execution and Supply (SOR Items)

2000.00 core Multi-strands copper conductor as per Specification No. IRS:S-76/89 or latest conforming to IS: 694/2010 or latest. Wire Colours shall be decided by engineer-in- Charge.

95.00 17719.00 1683305.00 Maintenance Free Earth for Single Earth consisting as per Spec. No. RDSO/SPN/197/2016 Ver 1.0 or latest, bonding connections drawing no. SDO/ RDSO/E&B/002 or latest are as under, (a) Copper bonded steel electrodes of 3.0 m long, 17.0 mm diameter with copper bonding thickness of min 250 micron and UL listed and marked -1 No. (b) Earth Enhancement compound supplied in sealed bags of min 30- 35 Kg.- 1 No. (c ) Copper Strip of 200mm x 25mm x 6mm to exothermically welded to Earth electrode- 1 No.(d) Copper Strip of 300mm x 25mm x 6mm (MEEB) - 1 No.(e) Copper Strip of 150mm x 25mm x 6mm (SEEB)- 1 No. It also includes supply of (i) 35 Sq. mm Multi-strand Single Core PVC insulated Copper Connector as per IS:694 for connecting Main Earth Electrode to MEEB in the equipment room in duplicate.-10 meter (ii) 16 Sq. mm Multi-strand Single Core PVC insulated Copper Connector as per IS:694 for connecting MEEB to SEEB and SPDs to MEEB.- 10 meter (iii) 10 Sq. mm Multi-strand Single Core PVC insulated Copper Connector as per IS:694 for connecting various equipment to SEEB- 10 meter.

95.00 pit as per RDSO Drawing No. SDO / RDSO/ E&B/001 which includes the following, a) Digging/Auguring/Boring of single earth pit of 100mm to 125mm dia. to the depth of approx. 3 meter. b) Insertion of 3.0 meter electrode and penetrating it minimum 150 mm by pushing gently with sledge hammer where the natural soil is assumed. (c) Filling of earth pit with Earth Enhancement Compound (EEC) in slurry form and backfilling. (d) Carrying out exothermic weld connection on single earth electrode to a copper tape of 200 x 25 x 6 mm. (e) Carrying out exothermic weld connection on the copper tape of 200 x 25 x 6 mm on Earth Electrode for connecting two 35 Sq. mm cables for redundancy. (f) The exothermic welding material for bonding the earth system shall be procured from RDSO approved firms, which includes graphite modules, clamps, weld metal powders etc. (g) The dimension of the chamber will be of 300 x 300 x 300 mm (inside dimension) of RCC with 50mm thick and fine finish, Inspection chamber should be as per IEC 62561-5 or latest. The top RCC cover size shall be 400 mm X 400 mm X 50mm. The date of testing and earth resistance value shall be written on the cover with black base with yellow paint or as per instruction of site engineer.

196.00 as per RDSO/SPN/TC/107-2018 Ver 2.1 or latest. Make- Motorola/Kenwood or better.

953.00 1429500.00 Battery Pack for Trans-Receiver 05 Watt VHF Set. Make - Motorola/Kenwood or better. KHARAGPUR DIVISION-S AND T/SOUTH EASTERN RLY Total 4298115.00

Item Breakup - B-Telecom Execution and Supply (Non SOR Items)

G.P Antenna 6 dB for 25 watt VHF set with Numbers base. MAKE- AVR Power solutions or Similar.

Supply of Transreceiver accessories for 25 Numbers watt VHF set 3db VHF GP antenna for 25 watt VHF sets base station (As per site requirement / compatibility )

Feeder cable ( RG Cable ) 50 ohms Numbers unbalanced Co-axial cable ( 30 meter ) FOR 25 WATT VHF SET (As per site requirement / compatibility)

Supply & installation of 12V 100AH battery Numbers (As per site requirement / compatibility)

Supply, fixing and wiring of surge protection Numbers 100.00 device in attachment plug module with replaceable surge protection for coaxial signal, interfaces N-connector plug/socket installed as surge protection between antenna and 25 W VHF sets, make- Phoenix or similar. This includes mounting plate and reserve gas filled surge arrestor (one no.) with all required connectors /clamp for commissioning of SPD at site. Total 1638619.00