4.5.2 Narrowband area service - VHF Mid Band (70 – 87.5 MHz) | ACMA

4.5.2 Narrowband area service - VHF Mid Band (70 – 87.5 MHz)

Licence type


Frequency band(s)

4.0 Broadcasting

4.5 Narrowband area service (NAS)

4.5.2 VHF Mid Band (70 - 87.5 MHz)

Band/Channel plan(s)

Segments A (70.00000 to 70.24375 MHz) and G (77.29375 to 77.49375 MHz) of the VHF Mid Band Frequency Band Plan (70 to 87.5 MHz) are available for narrowband area services. Refer to Attachment 1 of the Narrowband area service licensing information paper.


Narrowband services are assigned channel bandwidths of 25 kHz.  Where possible, channel centre frequencies should be assigned in accordance with the following formula:

Segment A:        70.00000 + n x (0.02500) MHz, n=1 to 9;

Segment G:        77.30000 + n x (0.02500) MHz, n=1 to 7

Information paper(s)

Narrowband area service licensing

Licence conditions Determinations

Spectrum embargoes
(current as of last update of this page)

Refer to RALI MS03 for any applicable embargoes.

Coordination criteria
(RALIs, Advisory Guidelines etc)

Intra-service coordination


Inter-service coordination

AP alert

Frequency assignment practices

Business operating procedures

  1. ACMA contact details for accredited persons
  2. Procedure for submitting requests for exemptions from embargoes
  3. Radiocommunications site data requirements
  4. BOP Correcting information in the ACMA’s Register of Radiocommunications Licences

Spatial data

Download embargo areas, in Placemark (Google Earth) and Shapefile format, from the spectrum embargoes web page.

Other information


Last updated: 02 April 2014