Coaxial Cable
Jul/090
Coaxial Cable
Electric Equipment, Tools, Meters
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 13 Gore Microwave 41 Coaxial RF Cables 18GHz SMA 7 23  US $39.00
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 Coaxial Cable M17 94 RG179 75 OHM IMP 30 AWG 1000 ft US $799.99
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 BNC Male to BNC Male Coaxial Jumper RG58 CableBBA US $6.99
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 CABLE GENERATOR PHONE TONE PROBE TRACER COAXIAL TRACKER US $28.88
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 10RG58 Coaxial RF Cable BNC Crocodile Clip Test Lead US $58.99
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 RG58 Coaxial Cable BNC Crimp Crocodile Clip Test Lead US $9.99
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 Coaxial Cable Banana to Crocodile Clip Test LeadBC US $9.99
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 100 Belden 83242 M17 158 Teflon Shielded Coaxial Cable US $15.99
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 Klein 63028 Coaxial Cable Cutter To 3 4 Diameter Cable US $19.99
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 Andrew Heliax 5 8 Coaxial Cable Connectors LDF45 50 US $130.00
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 Coaxial Cable BNC M to Crocodile Clip Test LeadBLC US $9.99
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 RG6 COAXIAL CABLE 1000 FT ROLL US $99.00
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 Coaxial Cable Banana To Crocodile Clip Test Lead Cable US $1.57
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 POCKET TONER CABLE TRACKER TOOL TESTER TV RG6 COAXIAL US $11.90
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 BNC Male to BNC Male Coaxial Jumper RG58 Test CableBBA US $.99
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 BNC Male to RCA Male Coaxial Jumper RG58 Test CableBCA US $.99
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 300FT COMMSCOPE 5940R RG 11 QUAD SHIELD COAXIAL CABLE US $39.95
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 New Commscope RG 174LL Mini RF Coaxial LDPE Cable 1000 US $29.99
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 Microwave RF Coaxial Cables BNC SMA US $3.99
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 Microwave RF Coaxial Cables N US $3.99
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 1000FT BELDEN 1189A 18AWG 1 COND RG6 CATV COAXIAL CABLE US $99.95
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 KLEIN 63030 Coaxial Cable Cutter NEW US $35.00
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 2 SMA Microwave RF Coaxial Jumper Cable 23 RG 142 US $20.00
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 Klein VDV010019 Coaxial Cable All In One Tool US $17.99
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 Belden 8241 coaxial cable 500 feet US $80.00
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 10Coaxial Cable Banana to Crocodile Clip Test LeadsBC US $48.00
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 Coaxial Cable BNC Male to Dual Alligator Test Clip lead US $5.45
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 Coaxial cable strip tool Rotary type for RG 59 RG 6 US $4.95
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 Raychem Thermax RG302 U Bulk Coaxial Cable RG 302 U NEW US $2.95
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 07 02818 16 SMA Coaxial Cable RG174 Coax Silver Teflon US $12.95
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 10x BNC Male to BNC Male Coaxial Jumper RG58 CableBBA US $39.00
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 RG6 58 59 62 COAXIAL CABLE Tool CUTTER STRIPPER CRIMPER US $6.79
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 6 Jumper RG 8X Coaxial Cable w GOLD PIN PL 259 Conn US $4.95
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 Coaxial Cable Banana to Crocodile Clip Test LeadsBC US $9.99
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 POMONA 50 OHM COAXIAL CABLE BNC MALE 2 FT NEW RG58C U US $7.99
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 10 04192 9 ft Mil Spec RG 316 SMA M M Coaxial Cable US $24.95
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 12 antenna coaxial wire cable 3 1 2 screw in standoff US $2.00
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 09 03954 6 RG 402 N Male Semiflex Coaxial Cable RG402 US $24.95
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 50 pcs 4 in Coaxial RG316 Cable TNC Female MCX Male US $29.99
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 10pcs RG58 Coaxial Cable BNC Crocodile Clip Test Lead US $58.99
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 Gardner Bender RG 58 59 Coaxial Cable Stripper SE 98 US $12.00
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 Belden 88241 RG 59 U Coaxial Cable Plenum 900 Ft STSI US $1,154.98
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 COLEMAN 991049 RG 58A U COAXIAL CABLE 250 FT NEW US $52.00
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 05 00702 6 Radiall RG 223 Coaxial Cable TNC Male TNC US $4.95
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 05 97305A Type N Male Coaxial Connector for RG 58 Cable US $4.95
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 09 03960 84 RG 402 Semiflex Coaxial Cable N to SMA US $44.95
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 HP ET 51478 2 50 OHM Coaxial Cable US $40.00
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 05 00164 7 SMA RG 402 Semiflex Coaxial Cable w Jacket US $14.95
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 DBL Coaxial Cable Staple by G B Electrical PDS 1525B US $3.69
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 PCS D8D8 521 34 75 OHM Coaxial Cable US $40.00
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 05 00168 12 MCX Plug to MCX Jack RG 174 Coaxial Cable US $12.95
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 Andrew Heliax Nm 90° coaxial Cable FSJ1 50 90cm US $25.00
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 05 00700 6 Astrolab RG316 Coaxial Cable TNC Female SMB US $4.95
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 LMR400 Low Loss Coaxial Cable 100 ft N Male Connectors US $114.95 |
A transmission medium is required to carry information from a source to a destination. The information is usually a signal that has to travel a long distance. For this, the transmission media can be wired or wireless. In wired transmission, the signal travels along the cable from one device to another. But in wireless transmission the electromagnetic waves are transmitted without using a physical conductor. There are three types of cables such as.
1- Twisted pair cable
2- Coaxial cable
3- Fiber optic cable
Twisted-Pair Cable
A twisted pair cable consists of two copper conductors, each one with its own plastic insulation and twisted together. One wire carries the signal and other is used as ground reference. The advantage of twisting is that both wires are equally affected by external influences. So the unwanted signals are canceled out as the receiver calculates the difference between signals in two wires.
This cable is of two types such as.
1- UTP (unshielded twisted pair)
2- STP (shielded twisted pair)
STP cable has one extra metal shield covering the insulated twisted pair conductors. But this is absent in UTP cables. The most common UTP connector is RJ45.
The unshielded twisted pair cable is classified into seven categories based on cable quality. Category 1 of cables is used in telephone lines with data rate around 0.1 Mbps. Whereas Category 5 used in LANs having 100 Mbps data rate.
Performance of twisted-pair cable is measured by comparing attenuation versus frequency. Attenuation increases with frequency above 100 kHz.
These cables are used in telephone lines to provide voice and data channels. DSL lines and Local area networks also use twisted pair cables.
Coaxial Cable
Coaxial cable (coax) carries high frequency signals than twisted-pair cables. Coax has a central core conductor of solid wire enclosed in an insulator, which is covered by an outer conductor of metal foil. This outer conductor completes the circuit. Outer conductor is also enclosed in an insulator, and the whole cable is protected by a plastic cover.
These cables are categorized by RG (radio government) ratings. RG-59 used for Cable TV, RG-58 for thin Ethernet and RG-11 for thick Ethernet. The connector used in these cables is called BNC connector; it is used to connect the end of the cable to a device.
Though the coaxial cable has higher bandwidth, but its attenuation is much higher compare to twisted-pair cables. It is widely used in digital telephone networks where a single cable can carry data up to 600 Mbps. Cable TV networks use RG-59 coaxial cable. Traditional Ethernet LANs also use this cable.
Fiber-Optic Cable
A fiber optic cable transmits signals in the form of light. Optical fiber use reflection to guide light through a channel. It consists of two main parts: core and cladding. Core is denser compare to cladding and is made up of plastic or glass. Cladding acts as a protective cover to core. The difference in density of core and cladding is such that a beam of light moving through the core is reflected off the cladding, instead of being refracted into it.
Two modes of propagation of light are possible in optical fiber such as: multimode and single mode. Multimode fiber allows multiple beams from a light source move through the core. In multimode step-index fiber, the core density remains constant from the center to the edges. But in multimode graded-index fiber, core density gradually decreases from the center of the core to its edge. Graded-index fiber creates less distortion in the signal compare to step-index.
There are two types of connectors for fiber optic cables. The SC connector is used for cable TV, and ST connector used for connecting cable to networking devices. Attenuation in fiber optic cable is very low compare to other two types of cable. It provides very high bandwidth and immunity to electromagnetic interference. Light weight and greater immunity to tapping makes it more preferable cable.
Fiber optic cable is often used in backbone networks because of its wide bandwidth and cost effectiveness. Local area networks such as 100Base-FX network and 100Base-X use this cable. Also it is used by cable TV companies.
http://engineering360.blogspot.com/2009/10/types-of-data-transmission-cables.html
About the Author:
I am a freelance blogger. I publish articles on subjects like education,computers, technology, Internet, SEO, blogging and online jobs. you can visit my site at http://www.engineering360.blogspot.com/
Article Source: ArticlesBase.com - Types of Data Transmission Cables
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(Telecompaper) Hong Kong-based telecommunications services provider City Telecom is seeking a television licence. The company has submitted a licence application for a 'Domestic Free Television Programme Service' in Hong Kong. City Telecom plans to transmit television signals via the fibre network of wholly-owned subsidiary HKBN and interconnect to the existing common in-building coaxial cable ...
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