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A comment on Listen to HD radio with a $30 RTL SDR dongle. Parent comment

Re:Listen to HD radio with a $30 RTL SDR dongle by argilo on Monday November 06, 2023 @10:45AM (#38164098)
Some stations have "HD TMC" (traffic message channel) streams. The others that I've encountered are "HERE Images" (traffic & weather radar images, discussed and mostly reverse engineered in https://github.com/theori-io/nrsc5/pull/308), "HERE TPEG", "TTN TPEG", "TTN STM", "NavteqAdmin" and "NavteqPacketData1."

At present, nrsc5 makes these streams available through its API, but doesn't otherwise do anything useful with them. I don't believe any of the GUIs process them either. Some reverse engineering work is needed.

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Re:Listen to HD radio with a $30 RTL SDR dongle by argilo on Monday November 06, 2023 @11:17AM (#38164554)
Also, all of those stream types seem to be used across multiple stations. I haven't seen any weird one-off streams.
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