The answer depends on the context: statistical frequencies are different from spectral frequencies.
The ration of a frequency to its total frequency is called relative frequency.
Relative frequency is a method of calculating the frequency of an event. Percentage frequency is a way of presenting the frequency of an event.
Transmit RF frequency subtract to the Receive frequency
frequency meter is used to measure the frequency of unknown frequency signal.
If you subtract from the carrier frequency the frequency of the tone that modulates it, then filter out the carrier frequency, then you have a lower sideband frequency. If you add to the carrier frequency, filter out the carrier, then you have an upper sideband frequency.
FM means Frequency Modulated.FM stands for modulation on frequency or frequency modulation.
The frequency in a frequency table is the number of occurrences within each class width. The total frequency is the sum of all frequency's within all the classes.
Period = 1 / frequency
frequency density = frequency/group width
Uplink frequency is a frequency that goes from the ground to the satellite. Downlink frequency goes from the satellite to the ground.
The frequency is unrelated to the fall, so it may have any frequency. Or no frequency at all.
slow frequency hopping (SFH) technology. The difference between slow frequency hopping and fast frequency hopping is that the frequency of latter changes faster than frequency modulation