Telecom, radio and telecom cables

Telecom

KGC Co, provides a full custom design service using the latest design technology to ensure a full professional service from concept through to the product. KGC’s design engineers can take  ideas or concepts and turn them into products  which can be manufactured reliably and repeatedly. Safety and EMC certification is supplied along with environmental specifications. KGC can provide complete services in oil and gas industry with unique capabilities for large offshore, onshore and pipeline communication projects. It also can provide services in telecommunication, cement and food industry. Thanks to tight collaboration with academic specialists and long term relationship with  foreign parties, we can provide adequate, exact and effective solutions for industry problems. Services provided include: Feasibility studies, Concept design, Product design, Design of electronics, Hardware Circuit design, PCB layout, Reverse engineering, Development & evaluation, Prototype services, Telecommunication cables

Security system:

CCTV Fence intrusion detection

ACS Security radar system

Intrusion LRAD system

Detection Man of board

People on board E-mustering

On-plant communication:

– Public Address and General Alarm Loudspeakers for explosion-hazard  areas  & indoor loudspeakers,  Accessories,  Beacons, Central  Exchange Unit.

– Intercom and page party

– Telephony System

– Hotline

– Powerless phone

– Rack cabinets

 

 

Your requirement to stack many  network devices, strong system or  heavy application servers and cabinets  are engineered with superior  strength characteristics to address this call.

The cabinet features a fully-welded  gauge steel frame with heavy-duty  struts contributing to a weight-load  rating. With an available depth of  up to 42″, the cabinet can support  deep server dimensions while  providing sample space for cable management.

Radio and transmission system:

Radio: MF/HF radiotelephone, Inmarsat c family, Inmarsat UHF, Radiotelephone, conventional radio, VHF radiotelephone, Marine VHF aeronatical, NDB

Transmission system: SDH/PDH, Industrial Ethernet, LAN/WAN, WIFI Wimax, MPLS, Microwave VSAT

Radio

Inmarcat C terminals are safty resource on-boars, providing free reception of satellite safety message and weather. The system connects your laptop via a serial port or USB to a serial converter and allows you to send short email messages, short videos and audio clips. It is useful when all of the another communication  systems are failed, and you need to get a short message  to someone via email from anywhere in the world, when you are out of cellular or GSM mobile phone range. Inmarsat C is a digital store – and – forward  communication system whereby texts or data messages are converted into a digital format before being  transmitted via satellite and support message exchange in ship-to-shore , shore-to-ship and ship-to-ship directions. Inmarsat C does not support voice communication. 

Rx frequency:                       1525 MHz – 1545 MHz

Tx frequency:                       1626 MHz – 1646 MHz

Receiver storage:                 Up to 32 Kbyte

Data rate:                             600 bit/sec

Max power:                          30 W

Max continuous current:      208 A

Max peak current:                 4 A

Standby power, RX mode:    < 2 W

Sleep mode power:               < 10 mW

MF & HF radiotelephone

MF/HF radiotelephone is a transmitting-receiving system often reffered to as a transceiver, which allows the  operator to either transmit or receive information by voice.  MF/HF radiotelephone uses SSB modulation for voice communication.

One of the greatest disadvantages of an MF/HF  radiotelephone is that it is not able to address a particular radio. A voice broadcast over MF/HF radiotelephone can be heard by all other MF/HF radios within range.

MF/HF radiotelephone with DSC (Digital Selective Calling) facility.

Capability of distress, safety and routine communication.

Instant selection of 256 user-specified channels with a rotary knob or direct kipad input.

 

The main components of a MF/HF radiotelephone consist of:

1- A transmitter with a microphone

2- A receiver with an earphone and loudspeaker

3- A MF/HF DSC controller

4- A radio telex system. (option)

5- An antenna

6- Power supply – often a 12V or 24V battery

 Transmitter

frequency range: 1605 to 27500 KHz

output power: 150 watt pep

antenna: 10-18 m whip or wire

modulation: Aingle Side Band

 Receiver

frequency range: 100 to 29999 KHz

receiver sensitivity: less than 13dB microV

tuning speed: within 15 sec

Non-directional radio beacon transmitter

Non-directional radio beacon transmitter (NDB) is used  to guide helicopters to offshore platforms and vessels in airports. It is located in an airplane or helicopter; consists of a  simple frequency selectable receiver, indicator, and rotating antenna.

It has a field strength meter, with a direction finding needle.

NDB gives the clockwise angle between the nose of an aircraft and the NDB.

Aircraft heads are toward the  maximum radiation.

As helicopter approaches NDB, the signal strength increases and the  needle indicates the direction of the platform or vessel. 

 

In almost every cases, radiation is omni-directional.

Antenna configuration may be either a Whip antenna or Helideck antenna.

As the frequency is very low, a half wave length antenna becomes very long. Using a short dipole antenna results in a big impedance mismatch.

Therefore, ATU-LP as the antenna tuning unit is used. This subsystem  matches the 50 Ohm output impedance of the transmitter to the impedance of the antenna system.

Radio communication VHF aeronautical land air

The VHF station enables ground-air  communication  between the aircraft ‘s pilots  and air traffic  controller, allowing the  transmission of service  messages from the Air Traffic Control (ATC) for  operation in terminal   control areas (AFIS, TWR and APP). 

Air Traffic control will continue to use the International Telecommunication Union (ITU),  allocated VHF band (117.975-137 MHz) to  support  voice exchanges with pilots for the  foreseeable  future. In addition to air-ground voice communication, this band also supports air-ground controller/pilot data link communications and aircraft communication.

Equipment – aeronautical VHF: VHF-AM Transmitter, VHF-AM Receiver, VHF-AM Transceiver, Local Control, Extended panel, Remote Control, VHF Antenna

Characteristics of Aeronautical VHF Radio

Transmitter

Output power           5-50 Watt

Power stability         better than 1 dB

Modulation index (AM)   95% Maximum

Impedance               50 Ohm unbalanced

VSWR                       >= 2:1

Harmonic rejection  >= 65 dBc for 2nd harmonic

Spurious rejection   >= 70 dBc for other harmonics

 

Receiver

Channel spacing        25 kHz

Impedance                 50 Ohm unbalance

Sensitivity                  107 dBm

IF selectivity              <=35 kHz in steps of -60 dB

                                   >=15 kHZ in steps of -6 dB

Dynamic range          1V to 100 mV

Protection against input signal    Up to 2V does                                                            not damage

Power Supply

AC Input Supply   Analogic Digital     99-246V±10%

DC Input Supply   Analogic Digital     50/60 Hz±5%

Consumption           AC-220V              DC-28V

Transmitter             1.3 A                  9 A

Receiver                 0.2 A                  1.4 A

 

 

 

 

Mechanical characteristics

                                         Analogic           Digital

Height (mm)                          89                  89

Width (mm)                           483                483

Depth (mm)                           405                450

Weight of transmitter (Kg)    12                  14.5

Weight of receiver (Kg)           7                   7

Marine VHF radiotelephone

A typical Marine VHF Radiotelephone has a 25W transmitter with class-D DSC (Digital Selective Calling) facilities and CH70 watch keeping receiver. The equipment is designed for pleasure craft and small fishing boat operating under simplified GMDSS (Global Marine Distress and Safety System) while the SOLAS convention ships must be equipped with DSC facilities meeting full GMDSS equipments.

CH70 is dedicated to DSC. The DSC uses a digital signal to send information on MMSI (Marine Mobile Service Identity). So that calling is addressed to a designed user or group who has DSC facilities. VHF radiotelephone marine allows you to transmit both routine calls and distress calls in case of emergency.

Transmitter

frequency range: 156 to 162 MHz

output power:   25 W max, 1 W at power reduction

frequency deviation:   ± 5 kHz max

antenna impedance:   50 Ohm

 

 

DSC

protocol:      class D DSC

sensitivity:   ±0 dB microV e.m.f. or less (BER<1%)

DSC frequency:           CH70

channel selectivity:     70 dB or more

spurious response:     70 dB or more

Receiver

frequency range:                155 to 163 MHz

sensitivity:                       ±6 dB microV e.m.f.                                                   or less (SINAD 20dB)

adjacent channel selectivity:70 dB or more

spurious response:               70 dB or more

 

Power supply

power voltage                      12 VDC, 5 A max

UHF radiotelephone

UHF radiotelephone is an intrinsically safe transceiver, designed on-board communication in ship operations

UHF radiotelephone is designed to ensure its safe use in conditions where intrinsically safe communication is necessary

This system is a waterproof design and it is used even in rainy or severe splash condition

Specification

output power              2 W (low: 0.2 W)

sensitivity                   8 dB microV or less

antenna impedance   50 Ohm unbalance

frequency                   CH1 457.525 MHz

                                   CH2 457.550 MHz

                                   CH3 457.575 MHz

 

Another package of UHF radiotelephone consists of several portable stations, base station, and repeater antenna system . The portable stations, which are several handheld, are able to communicate each other from any working areas. The base station expands the communication range of portable stations.

Repeater antenna is a non-boosted antenna which establish  smooth communication between two or more shielded areas with bulkhead at the top of the ship, allowed to install in hazardous areas because of no energy equipment.

Telecom cables

Micro Blown Duct Fiber Cable

Description

Micro air blown fiber optic cable is mainly used in access network and metropolitan area network.

By air blowing installation technology, without excavation surface in  tiny pipe installation, they also can be installed in the existing cable  pipe, saving pipeline resources, meeting the real time capacity of the network.

Our communication provides the micro optical cable technology that  can reduce the early stages of the fiber optic cable construction cost,  increase investment according to the demand of the network, speed up the return on investment, be a good solution of FTTH.

Features

Light weight and small diameter

High flexible and tension strength

Iseal for the ftth project and pipe duct

Loose tube structure up to 144 core

Technical Specification

Fiber counts  Cable diameter  Weight  Tensile strength  Crush resistance        Min. bending radius(mm)

                              (mm)         (Kg/Km)          (N)                 (N/100mm)                 static        dynamic

12                      5.6±0.1             27               500                       800                           12            20

24                      5.6±0.1             27               500                       800                           12            20

48                      5.6±0.1             27               500                       800                           12            20

60                      5.6±0.1             27               500                       800                           12            20

72                      5.6±0.1             27               500                       800                           12            20

96                      6.4±0.1             40               1000                     800                           12            20

144                    8.0±0.1             55               1000                     800                           12            20

1- Cables can be supplied with a range of single mode or multi-mode fibers.

2- The dimensions and raw materials can be designed according to the demand of the customers.

3- Standard Reel Length: 3000 m/reel: other lengths are available on request.

Micro Optical Cable GCYFTY12 core to 288 core

This specification covers the requirements for the supply of single-mode optical fiber cables

 The single mode optical fiber cable comply with the requirements of this specification and generally meet any latest relevant ITU-T Recommendation G.652

Fiber characteristics (G.652):

     Geometric Characteristics

                               ITEM                                                               CONSTRUCTION

          mode field diameter at 1310 nm                                        9.2±04 micro m

          cladding diameter                                                               125±1 micro m

          core concentricity error                                                       <=0.6 micro m

          cladding non-circularity                                                       <=1.0%

          cut-off wavelength (λcc) (for cable)                                    <=1260 nm

          cut-off wavelength (λc) (for fiber)                                       1180 nm~1330 nm

          primary coating diameter (not included color layer)           245±10 micro m

                                                    (included color layer)                 250±15 micro m

          coating-cladding concentricity error                                    <=12.5 micro m

          fiber curl radius                                                                    >=4 m

     Transmission characteristics

                             ITEM                                                                     PERFORMANCE

            attenuation                                          at 1310 nm  (<=0.36 dB/km),   at 1550 nm  (<=0.22 dB/km)

            macro bending loss Φ=60 mm, 100 turns at 1550 nm              <=0.1 dB

            chromatic dispersion               within 1288~1339 nm (<=3.5 ps/nm*km),  at 1550 nm (<=18 ps/nm*km)

            zero dispersion wavelength                                                  1300~1324 nm

            zero dispersion slope                                                        <=0.092 ps/Nm2.km

Micromodule 288 Core Aerial G.657A2/G.652D (Module 12)

Technical characteristics:

1- The unique extruding technology provides the fibers in the tube with good flexibility and bending endurance

2- The unique fiber excess length control method provides the cable with excellent mechanical and environmental properties

3- Multiple water blocking material filling provides dual water blocking function

Color code scheme:

Fiber color        red  blue  green  yellow  violet  white  orange  gray  brown  black  aqua rose 

Modules color   red  blue  green  yellow  violet  white  orange  gray  brown  light  aqua rose

                                                                                                                         green

Micromodule 12/24/36/48/72C Aerial G657A2/G652D (Module 12)

Technical characteristics:

1- With excellent mechanical and environmental properties

2- Has good bending performance, easy to install

Color code scheme:

Fiber color       red  blue  green  yellow  violet  white  orange  gray  brown  black  aqua rose 

Modules color   red  blue  green  yellow  violet  white    /        /        /         /         /         /

Micromodule 96 Core Aerial G.657A2 / G.652D (Module 12)

Technical characteristics:

1- The unique extruding technology provides the fibers in the tube with good flexibility and bending endurance.

2- The unique fiber excess length control method provides the cable with excellent mechanical and environmental properties.

3- Multiple water blocking material filling provides dual water blocking function

Color code scheme:

Fiber color       red  blue  green  yellow  violet  white  orange  gray  brown  black  aqua rose 

Modules color   red  blue  green  yellow  violet  white  orange   gray      /       /       /      /

Micromodule 12/24 Core Duct G.657A2/G.652D
(Module 12)

Technical characteristics:

1- With excellent mechanical and environmental properties

2- Low weight, easy to install and joint

Color code scheme:

Fiber color         red  blue  green  yellow  violet  white  orange  gray  brown  black  aqua rose 

Modules color   red  blue  /        /         /         /        /         /        /         /         /         /

Micromodule 36/48 Core Duct G.657A2/G.652D
(Module 12)

Technical characteristics:

1- With excellent mechanical and environmental properties

2- Low weight, easy to install and joint

Color code scheme:

Fiber color         red  blue  green  yellow  violet  white  orange  gray  brown  black  aqua rose 

Modules color   red  blue  green  yellow    /          /           /          /          /          /         /         /

Micromodule 72 Core Duct G.657A2 / G.652D (Module 12)

Micromodule 96/144 Core Duct G.657A2/G.652D
(Module 12)

Technical characteristics:

1- With excellent mechanical and environmental properties

2- Low weight, easy to install

Color code scheme:

Fiber color        red  blue  green  yellow  violet  white  orange  gray  brown  black  aqua rose 

Modules color  red  blue  green  yellow  violet  white  orange   gray  brown  light  aqua  rose

                                                                                                                         green

Micromodule 288 Core Duct G.657A2 / G.652D (Module 12)

Technical characteristics:

1- With excellent mechanical and environmental properties

2- Low weight, easy to install

Color code scheme:

Fiber color        red  blue  green  yellow  violet  white  orange  gray  brown  black  aqua rose 

Modules color  red  blue  green  yellow  violet  white  orange   gray  brown  light  aqua  rose

                                                                                                                         green

About Us


KGC was established as a manufacturing and trading company in 2005. The main field of our activity is supplying equipment in oil, gas, and petrochemical industry, mining, and electrical equipment.