Electrical Equipment, Tools, Meters

Coaxial Cable

Coaxial Cable

Electric Equipment, Tools, Meters

Coaxial Cable BNC M to Crocodile Clip Test LeadBLC    US $9.99

RG58 Coaxial Cable BNC Crimp Crocodile Clip Test Lead    US $4.99

RG58 Coaxial Cable BNC Crimp Crocodile Clip Test Lead    US $3.99

RG58 Coaxial Cable BNC Crimp Crocodile Clip Test Lead    US $.99

APPROX 50 FT RG 8 U TYPE COAXIAL CABLE    US $9.99

3 RF Coaxial Jumper Cable 5 N m Thermax MS2 320    US $25.00

CABLE GENERATOR PHONE TONE PROBE TRACER COAXIAL TRACKER    US $28.88

Coaxial Cable BNC Male to Crocodile Clip Test LeadsBLC    US $1.99

BNC Male to BNC Male Coaxial Jumper RG58 Test CableBBA    US $1.99

10 04210 10 SMA Male to SO 239 Coaxial Cable RG 174    US $12.95

Coaxial Cable Banana to Crocodile Clip Test LeadBC    US $1.99

Heavy Duty F Coaxial Cable Connector    US $.99

POCKET TONER CABLE TRACKER TOOL TESTER TV RG6 COAXIAL    US $11.90

THOMAS BETTS LR6 RG11 COAXIAL CABLE CRIMPER    US $9.99

100ft Teflon coaxial plaxial cable microwave sma    US $49.99

GARDNER BENDERGB COAXIAL CABLE STRIPPERSE 98RGBNEW    US $3.99

10Coaxial Cable BNC M to Crocodile Clip Test LeadBLC    US $45.00

20 RG142 RG 142 Coaxial Cable Harbour Industries    US $26.90

6 RG 8X Double Shielded Coaxial Cable w PL 259 Conns    US $7.95

10x BNC Male to BNC Male Coaxial Jumper RG58 CableBBA    US $39.00

100 ft BELDEN Coaxial Cable RG 316 U 50 Ohm SPCW brown    US $30.00

25 UT 141 SS N m SMA m Stainless Steel Coaxial Cable    US $29.00

25 MIL SPEC RG 400 RG 400 U COAXIAL CABLE    US $37.50

BNC Male to BNC Male Coaxial Jumper RG58 CableBBA    US $6.99

SPOOL COAXIAL CABLE COAX TV 1000FT 1000 FT WIRE REEL    US $39.99

Precision Coaxial Cable Stripper for RG58 RG59 RG62 RG6    US $12.99

1000 ft RG59 Coaxial Siamese CCTV Cable Video Power    US $155.00

Ideal Black Coaxial Cable Staples 1 4 Smaller Cable    US $3.00

Coaxial Cable MultiFunction Stripper Cutter Tool 34 514    US $7.09

750 Ft Belden Coaxial Cable Spool Unreel 9907 Gray Coax    US $19.99

6 Foot M17 60 RG142 RF Coaxial Cable w TNC UG 154A U    US $16.99

Coaxial Cable MultiFunction Stripper Cutter Tool 34 025    US $4.69

15 Foot M17 60 RG142 RF Coaxial Cable w TNC UG 154A U    US $24.99

07 03366 18 SMA to N Coaxial Cable Pigtail RG 142 U RF    US $12.95

06 02599 13 SMA Male Male RG 316 Coaxial Cable Jumper    US $12.95

ECS 50 OHM COAXIAL CABLE TNC MALE AVIONICS 7 FT NEW    US $9.99

TEKTRONIX 015 0560 00 50 OHM COAXIAL CABLE 265 GHZ    US $165.00

POMONA 50 OHM COAXIAL CABLE BNC MALE 2 FT NEW RG58C U    US $9.99

07 03291 12 or 1 ft RG 316 BNC M M Coaxial Cable RF    US $17.95

Belden 9880 10 base 5 IEEE coaxial cable 200 ft yellow    US $40.00

07 03090 7 Tensolite SMA Semi Flex Coax Cable Coaxial    US $18.95

07 03289 120 10 ft RG 316 BNC M M Coaxial Cable RF    US $26.95

New CABLESTOGO RG 6 Quad Shield Coaxial Cable Stripper    US $25.99

07 03379 15 RG 402 N SMA Semiflex Coaxial Cable RG402    US $29.95

HP 37203A HP IB EXTENDER COAXIAL OPTICAL GPIB CABLE    US $99.99

07 03282 6 Tensolite SMA Male Semi Flex Coaxial Cable    US $14.95

07 02785 22 Tensolite SMA Semi Flex Coax Cable Coaxial    US $19.95

Lot 5 Harbour M17 60RG142 Coaxial Gold Braided Cable    US $14.56

204 350 RG6 58 59 COAXIAL CABLE CUTTER STRIPPER CRIMPER    US $12.14

5 x Harbour M17 60RG142 Coaxial Silver Braided Cable    US $14.56

W L GORE 271040P14 COAXIAL CABLE 30    US $24.99

PASTERNACK RG223 U COAXIAL CABLE 24    US $24.99

New Klein Coaxial Cable Cutter upto 3 4 Cable    US $29.49

Lot of 13 THERMAX RGU 400 COAXIAL CABLE NEW    US $59.99

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

City Telecom seeks TV licence
(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 ...