Castanet Corporation announced a commercial-ready hybrid ATSC 3.0 and 5G Broadcast Internet pilot network in Las Vegas at the 2026 NAB Show, following an earlier Silicon Valley pilot with Major Market Broadcasting. The company also opened its C5G Interactive Live Sports second-screen platform to the public and reported progress on VoDoS, a Video-on-Demand-over-Satellite consortium aimed at one-to-many satellite CDN distribution for D2C and wholesale use cases. Castanet says the system aligns with FCC regulations, can leverage LPTV spectrum, and its spectrum-owner consortium covers roughly 60% of the U.S. population.
Streaming’s unit economics still break under “everyone hits play at once” moments—especially for live sports and peak-time tentpoles. Castanet is pushing a counter-architecture: treat spectrum (LPTV + ATSC 3.0) and even satellite as the broadcast-grade multicast layer, with broadband/CDNs reserved for personalization and backchannel. If this becomes operationally repeatable, it’s a new bargaining chip in the CDN vs. broadcaster power dynamic—and a potential monetization reset for spectrum holders. The meme to watch: “multicast is back,” this time packaged as internet infrastructure, not TV.
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