The Defence Forces of Ireland are considering the purchase of Software Defined Radios (SDR) as the next generation of tactical radios for the Irish Defence Forces. It is envisioned that the SDR platform will provide enhanced capabilities to include as a minimum high bandwidth data and voice transmission for ISR applications. Software Defined Radios which operate in the VHF, UHF and HF bands are considered as optimal. Characteristically the SDR must provide Commsec and Transec communications for both voice and data communications. Consideration will be given to the SDR's suite of narrow band wide band waveforms. Interoperability with partner nations will be a potential requirement for the Irish Defence Forces. Therefore, the SDR's ability to port different waveforms will be viewed as a potential benefit for the Defence Forces. The ability to generate and create waveforms for different tactical applications will be researched as part of this programme. Any purchase of an SDR will be expected to remain in service for the next 15 to 20 years. SDR's for review must be tactically fielded and have a proven maintenance and support capability.