8
(DTV) signals are use d, requiring less
bandwidth due to digit al video compression .

U

UHF (Ultra high frequen cy)
In radio or TV broadc asting: it is the fre quency
range of electromag netic waves which lies
between 300 MHz and 3 G Hz (3000 MHz).

V

VHF (Very high frequency)
In radio or TV broadc asting: it is the fre quency
range of electromag netic waves which lies
between 30 MHz and 30 0 MHz.
7 Glossary

A

Antenna
A device, such as a rod or wire , which picks up
a received radio frequ ency signal or radiate s a
transmitted RF s ignal.
ATSC (Advanced Television Systems
Committee)
The Advanced Television Syste ms Committee,
Inc.,isaninternati onal,non-protor ganization
developing voluntar y standards for digi tal
television.Thehighde nitiontelevision
standardsdenedbyt heATSCproducewide
screen 16:9 images up to 1920x1080 pi xels
in size -- more than six time s the display
resolution of the earl ier standard. Howev er,
many different image size s are also supported ,
sothatuptosixstandar d-denition“vi rtual
channels” can be broadca st on a single 6 MHz
TV channel.

C

Coaxial
A single copper conductor, sur rounded with
a layer of insulation, covered by a su rrounding
coppershieldandnally,aninsu latingjacket.
An unbalanced transmi ssion line with const ant
impedance. In audio, thi s type is commonly
used for low level, line signals t erminated in
RCA connectors.

H

HDTV (High-Denitio n Television)
It is a digital televisio n broadcasting sys tem
with higher resolut ion than traditiona l
televisionsystems(st andard-denit ionTV,
or SDTV). HDTV is digit ally broadcast;
the earliest imple mentations used analog
broadcasting, bu t today digital televisio n
EN