Fhz (Channels) Information for NZ Motorsport

In the first instance to clear up a interchangeable term, channels and Fhz (frequency)

A Fhz is what the radio is tuned in to, a little like in the old days we used to have an old style car radio we used to tune up and down the dial to find a radio station. What we were doing is changing the receive fhz in order to find a station.

A channel is like the presets that you memorise when you find the radio station.The channels allow you to easily come back to the radio station at a latter date, so a channel contains a fhz. In reality these terms are interchangeable and often mean the same thing.

What is  CTCSS or Tone?

Modern radios have the ability to not only hear a transmission on a specific fhz,  but they also can apply a filter. This filter is done by the way of sending a CTCSS tone. These tones are often referred to as sub-audioable as they are outside the range of what we can hear.

When set on a receiver, it will only allow you to hear the audio on the specific fhz set that contains the correct CTCSS tone.

NZ Circuit Track Fhz: 455.16875 MHz
NZ Circuit CTCSS or Tone: 179.9 HZ

Speedway Track Fhz: 455.0625 Mhz
Speedway CTCSS or Tone: 123.0 Hz