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UHF Survey

On 17 May 2021 we started a short survey into the misuse of the UHF CB emergency channels 5 & 35. As of 19 September 2021 we had 80 responses. The results are shown below.

Of the 80 responses 87.5% reported they had heard misuse of either one or both of the emergency channels while 12.5% reported they had not heard misuse on ch5.

Channel Instances
5 31.25%
35 3.75%
Both 5 and 35 65%

Of those that heard misuse we asked if they had heard operators in five different categories – Business/Commercial, Construction, Road Works, Government and Private/Hobbyist (multiple reports from each response was permitted).

Category Instances
Business or Commercial 23.17%
Construction 26.22%
Road Works 20.73%
Government 4.27%
Private or Hobbyist 25.61%

As can be seen from the above table, the largest proportion of misuse came from the construction industry, followed closely by private users or hobbyists, then business/commercial and road works. Government users were the lowest number of recorded users.

The survey also asked how often this misuse (or non-misuse) was observed:

Frequency Instances
Daily 48.75%
Most of the week 12.5%
A few times a week 13.75%
Weekends 1.25%
Random 23.75%

To round out the data we also asked whether the operator used their UHF in a car/truck, house or both:

UHF used in Instances
Car and/or truck 51.25%
Home/House 6.25%
Both car/truck and home 42.5%

We’d like to thank everyone that participated in this survey. We will keep it open for a while longer (see form below) and update this page each month as needed. By the end of the year we aim to have a submission to both the ACMA and the Minister for Communications outlining this issue and the need for ACMA action to help resolve the problems.

If you have details of a specific incident of misuse you can send us the details using our Misuse Report. We can then try to contact the users and educate them on these channels.


    Thank you but this survey is for those that own or use a UHF CB.

    Thank you for your time. Your response will be recorded once you hit SUBMIT below. Even negative responses are of importance to this survey.

    The following questions are optional. If you would like to be kept up-to-date on our efforts please supply at least a first name and email address. If provided this information will remain confidential and will not be supplied to any other party.