Julian Voigt Aerial & Satellite
Mobile: 07726 299 032
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  • D-CAB – Digital Cable

  • D-Sat – Digital Satellite

  • D2MAC – This is an encrypted satellite signal sent in analogue which has the luminance & chrominance parts of the video signal broadcast sequentially. Typically used by broadcasters in Europe.

  • DAB – Digital Audio Broadcasting

  • dBi - The gain of the aerial in accordance with an isotropic source. This really is normally 2.15dB greater than the gain in accordance with what half-wave dipole is.

  • dBm – dB power in relation to a 1 milliwatt standard

  • dBw – dB power to 1 watt.

  • DCT - The Discrete Cosine Transform is a way of getting at the redundancy that's in television images to have the ability to decrease the datarate. It is a fundamental part of the MPEG-2 compression process.

  • Decibel - A decibel is really a logarithmic energy ratio, abbreviated dB. Could also represent a current or voltage ratio when the currents or power are measured across (or through) identical impedance. Suffixes towards the abbreviation indicate references: dBi, isotropic radiator dBic, isotropic radiator circular dBm, milliwatt dBW, watt.

  • Declination Offset - The adjustment position of the polar mount between your polar axis and also the plane of the satellite dish accustomed to pointing at the geosynchronous arc. Increases from zero with latitude from the equator.

  • Demodulator - Equipment that's made to extract the wanted information from an incoming signal.

  • Depolarisation – The Turning of the polarisation from a radio wave whilst it travels through the air.

  • Deviation – The Total number that a carrier frequency is moved by a modulating signal.

  • Dielectric - Insulation materials to split up the conductors of the coaxial cable or even the performing circuits of the capacitor.

  • Digibox – A name commonly used for a digital receiver of either satellite of terrestrial TV signals.

  • DigiTAG - Is Europes version of DTG within the United kingdom, as being a consortium of tv stations and producers focusing on common standards inside the DVB framework with the aim of achieving a EU wide marketplace for receiver designs. Digitag works underneath the auspices from the EBU.

  • Diplexer - A frequency-conscious device for mixing or splitting signals in various frequency bands. A diplexer includes a lower insertion loss compared to equivalent splitter.

  • Dipole – Generally an aerial element which is half a wavelength in length that has interconnecting at the centre point.

  • Discriminator – An electrical circuit that demodulates an FM signal.

  • DiSEqC - Digital Satellite A digital control signal for manipulating the DiSEqC compatible units from the satellite dish through a  coaxial cable, i.e. motor units, switches.

  • DMC – Digi Master Contract

  • DMX – Digi Master X (High Gain)

  • Downstream – Infomation travelling from the Web to a PC.

  • DSB – Double Side Band signals rather than SSB – Single Side Band

  • DSO – Digital Switchover. A schedule for the switchover of the UKs’ Transmitters from analogue to digital.

  • DTI – Department of Trade & Industry.

  • DTT – Digital Terrestrial TV which is also known as Freeview, which is received through a wide band aerial.

  • DTV – Digital TV.

  • DVB – Digital Video Broadcasting. – EU regulation for digital TV.

  • DVB-S – Digital Video Broadcast – Satellite.

  • DVB-T – Digital Video Broadcast – Terrestrial.

  • DVB –T2 – Digital Video Broadcast Transmission - platform 2, the HD broadcast platform for digital terrestrial TV transmissions (i.e, Freeview) - presently not ‘backward-compatible’ using the earlier DVB-T1 platform.

  • DVD - Digital Versatile (initially Video) Disk. Data storage medium used, among other activities, for disbursing consumer video having a standard recording 4.7GBytes giving 140 mins at typically around 3Mb/sec, however with an optimum capacity of 8Mb/sec.

Julian Voigt Aerial & Satellite:  Daytime: 07726 299 032

Phone:07726 299 032
Email: jcvaerials@gmail.com Julian Voigt Aerial & Satellite home page: Julian Voigt Aerial & Satellite

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