The Communications Authority of Kenya (CA) has activated the country’s inaugural trial of Digital Sound Broadcasting (DSB) services in Nairobi, marking a significant milestone in the evolution of radio broadcasting as the world observes World Radio Day 2026.
The trial, facilitated by the CA, introduces Digital Audio Broadcasting (DAB+) technology to address longstanding challenges in the FM spectrum. Sound broadcasting reaches approximately 98% of Kenyan homes and supports around 300 licensed services. However, VHF Band II FM frequencies (87.5–108.0 MHz) are saturated in major urban areas, resulting in limited room for new broadcasters, increased interference, and suboptimal audio quality.
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In 2023, the CA developed a comprehensive framework for DSB, focusing primarily on DAB+ in VHF Band III (174–230 MHz) and Digital Radio Mondiale in the HF band (30 MHz). The framework underwent extensive stakeholder consultations involving broadcasters, signal distributors, equipment vendors, government agencies, and industry associations.
In 2025, the Authority granted authorizations to two licensees—Signet Signal Distributors Ltd and Mast Rental Services Ltd—to deploy trial networks. Mast Rental Services became the first operator to launch a DAB+ trial network in January 2026, currently carrying 14 radio programmes within the Nairobi coverage area.
The activation of the Digital Sound Broadcasting signal represents a key advancement for Kenya’s broadcasting sector.
The DSB technology will initially complement, rather than replace, existing FM services, with no analogue switch-off date established to ensure seamless continuity for listeners. Rollout will occur in phases, starting with the Mombasa–Nairobi–Kisumu corridor and major population centres.
Benefits for broadcasters and investors include wider coverage, reduced entry barriers, new revenue streams, and separation of content provision from signal distribution. This allows broadcasters to prioritize compelling, diverse content while multiplexing multiple services on a single channel lowers transmission costs and reserves capacity for community broadcasters at nominal fees.
For consumers, digital radio promises clearer audio, minimal interference, expanded programming choices—including niche, regional, and thematic services—and potential value-added data features such as programme guides and station information.
Over time, the CA aims to substantially increase the number and variety of services, including digital-only stations catering to diverse communities.
The Authority will monitor and evaluate the network during a 12-month trial period, assessing signal coverage, service quality, receiver affordability, and public education efforts to encourage voluntary adoption.
With this initiative, Kenya joins a growing group of nations embracing digital radio trials as the future of sound broadcasting. The country will collaborate with regional bodies to promote harmonized approaches that boost interoperability and attract investment.
