this post was submitted on 14 Jun 2026
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Investigating the Transit 5B-5/E-5 Satellite: The oldest satellite still transmitting (www.rtl-sdr.com)
submitted 1 week ago by vk6flab@lemmy.radio to c/amateur_radio@lemmy.radio
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Transit 5B-5 is a US Navy navigation satellite that was an early version of the GPS/GNSS system we enjoy today. It was launched in 1964 and has been transmitting continuously for roughly 60 years. Unlike many dead satellites that only emit a carrier tone, this one still broadcasts modulated telemetry on about 136.65 MHz, making it a fascinating target for amateur radio and SDR hobbyists.

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[–] vk6flab@lemmy.radio 5 points 1 week ago

https://xerbo.net/posts/investigating-transit-pt1/