Spectrum: The radio frequency spectrum ranges from very
low frequency radio waves at around 10kHz (30 kilometres
wavelength) up to 100GHz (3 millimetres wavelength). The
radio spectrum is divided into frequency bands reserved for a
single use or a range of compatible uses. Within each
band, individual transmitters often use separate frequencies,
or channels, so they do not interfere with each other.
Spectrum is divided between
different types of technology
your AM and FM channels are all spread
around 100MHz - 200MHz.
Telecom spectrum starts from 800MHz,
and goes up to 2300MHz.
Bluetooth - Wi-Fi used to be 2.4GHz
bands for cellular communication are
800MHz, 900MHz, 1800MHz, 2100MHz,
Bandwidth is defined as the maximum amount
of data that can be transmitted in a fixed amount of
time. It is the range of lowest to highest frequency.
For digital devices, the bandwidth is usually
expressed in bits per second(bps) or bytes per
second. For analog devices, the bandwidth is
expressed in cycles per second, or Hertz (Hz).
An internet connection with a larger bandwidth can
move a set amount of data (say, a video file) much
faster than an internet connection with a lower
Bandwidth is typically expressed in bits per
second, like 60 Mbps or 60 Mb/s
Bandwidth is maximum data rate
What is Data Rate
Data rate (or data transfer rate) is the
amount of data being transferred
through a connection within a second.
Data rate cannot be higher than the
bandwidth of the connection. Data rate
is also measured in ‘bits per second’ or
bps. Sometimes data rate is also called
as bit rate.
Number of data transfer in given bandwidth per unit time