What is Frequency?
The number of cycles per unit of time is called the frequency. For convenience, frequency is most often measured in cycles per second (cps) or the interchangeable Hertz (Hz) (60 cps = 60 Hz), named after the 19th C. physicist. 1000 Hz is often referred to as 1 kHz (kilohertz) or simply ‘1k’ in studio parlance.
Frequency describes the number of waves that pass a fixed place in a given amount of time. So if the time it takes for a wave to pass is is 1/2 second, the frequency is 2 per second. If it takes 1/100 of an hour, the frequency is 100 per hour. Usually frequency is measured in the hertz unit, named in honor of the 19th-century German physicist Heinrich Rudolf Hertz. The hertz measurement, abbreviated Hz, is the number of waves that pass by per second. For example, an “A” note on a violin string vibrates at about 440 Hz (440 vibrations per second).
Frequency is basically the rate in which the satellites send its signals down to earth. Frequency is basically of two types downlink and uplink. The satellites uses downlink frequencies to send its signals down to earth while the Uplink frequency is used to communicate with the satellite from earth. The frequency used in this Column is downlink frequency. Frequency in this column is expressed in GHz (Giga Hertz), which is the S.I. unit to denote frequency. 1 GHz = 1000 MHz = 1000000 KHz = 1000000000 Hz.
