Digital handheld mobile radios

Icom has released IDAS, a series of digital land mobile radios.

IDAS (Icom digital advanced system) is a digital land mobile radio system for business and industry using a jointly developed digital modulation and common air interface protocol.

It has been developed to meet the need for more efficient use of radio spectrum and consists of a complete radio system, including handhelds, mobiles and repeaters that operate using an ultra narrowband 6.25 kHz
FDMA modulation scheme.

FDMA also offers redundancy if there is an infrastructure failure, ie it will still be 6.25 kHz spectrum efficient even if a repeater fails.

The system has modulated clear voice, secure communication and 4800 bps data communication and retains compatibility with current analog FM systems. The series is capable of mixed mode operation in which the radio can receive analog FM and digital signals on a single channel.

The system principle is spectrum efficiency with the flexibility to allow the user to scale system migration to ultra narrow band digital, while still running an existing analog system.

Other features include: individual/talk-group and all call; call alert; emergency call and alert; data call; message communication; remote stun/kill and revive; remote radio check; remote status polling; position data transmission; digital encryption; man down and lone worker features in digital mode (HH only); and message communication.

An application developers' kit will be provided to allow Icom distributors/ OEMs to develop software to enhance, customise or expand on the basic system, eg, AVL , full dispatch, etc.

The radios are designed for factory, warehouse and hotel businesses and the construction, security and transport industries, etc. The company aims to help users replace existing analog FM systems and future-proof investment in their radio system.