Postal Address

 P. O. Box 675

Archerfield, Qld 4108 Australia


1/53 Boyland Avenue

Coopers Plains, Qld. 4108

Contact Details

Phone: +61 7 3373 2345

Fax: +61 7 3373 2399

  • MCQ Services

    CODAN - Asia Pacific Service Centre

    CODAN - Authorised Dealer

    CODAN - Queensland Distributor

    CODAN - Service Centre

  • CALM

    Codan Automated Link Management (CALM) is a new and very advanced feature in which the transceiver performs the channel selection operation automatically. The handset in most ways looks and operates like a mobile phone.

    More Information...

  • GITC Accreditation

    All Queensland Government Agencies which fall under the State Procurement Policy are required to use GITC for the procurement of ICT products and/or services.

    Mobile Communications (Qld) is an accredited GITC Supplier # Q290

    More Information...



HomeRadio PrinciplesUHF/VHF Radio

Radio Principles


  • Very High Frequency or VHF radios operate in the frequency range of 30MHz to 300MHz.
  • Ultra High Frequency or UHF radios operate in the  frequency range of 300Mhz  to 3Ghz.

VHF and UHF radios are widely used by public service agencies for two-way radio communication. Modern VHF and UHF radios support both analogue and digital transmission methods.

radio1 man1

The point to point transmission and reception of VHF and UHF radio signals makes them ideal for short-distance terrestrial communication.

A typical VHF or UHF radio only has a range of a few Km but can be extended up to 80 Km by the use of repeaters The range can be affected by many variables. Atmospheric and  physical obstructions such as mountains and buildings, and time of day will all have an effect on the signal transmission and degradation of signal reception.