What is a Frequency?
A Frequency is what we call the number of time a energy wave completes a cycle per second, the wave can be sound, light, radio, power, radiation and so on. Frequency is measured in Hertz shown as (Hz). so say we have a wave going up and down once per second in Frequency we say that is 1 Hertz or 1Hz of we have a wave going a 1000 times a second we say that is 1Kiolhertz or 1KHz. K Times by 1000. If we have 1000000 cycles per second we call that a 1 Mega hertz or 1MHz, meaning times by 1000000
Audio Frequency’s (AF)
Audio Frequencies are wave we can hear, a young person (that has not listened to much loud music) has the hearing range on average 20Hz to 1KHz. As we age we lose the higher frequency’s, things like loud music, industry noise can increases the decay of our hearing. Below 20Hz we call sub audio this is what some animals use for long distance communications such as elephants, just above Audio frequency’s is ultra Sonics this is what dog and cats can hear when you uses one of throws special dog calls you can not hear, bats also use these frequency’s for navigation
Radio Frequencys (RF)
Radio Frequency radiation or (RF) is a form of electromagnetic radiation with a frequency of 3 KHz to 300 GHz. This range of electromagnetic radiation constitutes the radio spectrum and corresponds to the frequency of alternating electrical signals used to produce and detect radio waves. RF can refer to electromagnetic oscillations in either electrical circuits or radiation through air and space. RF travels at the speed of light.
Radio Frequency’s are divided into the below bands
VLF: Very low Frequency’s 3 KHz – 30 KHz
LF: Low Frequency’s: 30 KHz – 300 KHz
MF: Medium Frequency’s, 300 KHz – 3 MHz
HF: High Frequency’s, 3 MHz – 30 MHz
VHF: Very High Frequency’s, 30 MHz – 300 MHz
UHF: Ultra High Frequency’s, 300 MHz – 3 GHz
SHF: Super high Frequency’s 3 GHz – 30 GHz
EHF: Extremely high Frequency’s 30 GHz – 300 GHz