Low power digital voice and data transceiver has range of 12km

To sustain secure digital voice and data communication channels over ranges in excess of 12km (line of sight) for systems operating in licensed and unlicensed bands, CML Microcircuits has introduced the SCT2400 transceiver.

The integrated digital radio transceiver is based on spread spectrum modulation operating in the 2.4GHz frequency range. It can be deployed in multiple geographical regions to enable products operating in both licensed and unlicensed applications. It has a range of over 12km (line of sight) with up to 100mW of output power while consuming just 10mA in scan mode, around 52mA when receiving voice and just 64mA when transmitting voice.

The SCT2400’s low power performance and security features make it suitable for a range of digital voice and data applications.

The SCT2400 includes CML’s voice coding and advanced forward error correction, to maintain clarity and security over long ranges in low power radio systems such as private mobile radio (PMR) and land mobile radio (LMR). This will enable PMR/LMR to move from disparate and regional bandwidths into the 2.4GHz ISM band, which is globally recognised as the preferred license-free operating frequency.

Using the SCT2400 in new designs will enable manufacturers to standardise on a single platform for multiple regions, explains CML. Support for short data messages will allow the transceiver to address new markets and emerging applications.

The SCT2400 will enable developers to realise innovative solutions in smaller form factors, says CML, and improve battery life, compared to current radios.

The SCT2400 achieves a power consumption that is up to a factor of five better than competing products targeting PMR, reports CML. Its low power dissipation and small dimensions of 10 x 10mm in a 144-BGA package, means it can be used in portable, mobile and wearable products, including fitness trackers, smart clothing and wireless headsets. The SCT2400 operates from a single 3V supply and supports digital voice modes that include peer to peer, group call and broadcast, along with an SMS data mode.


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