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A comment on Etherify: Transmitting Morse Code via Raspberry Pi Ethernet RF Leakage (2020).

Re:Etherify: Transmitting Morse Code via Raspberry Pi Ethern... by oarla on Monday January 15, 2024 @09:19AM (#39001250)
Interesting bit is that the Raspberry Pi 4 leaks at 125 MHz without a cable connected. Guessing that mostly a manufacturing defect on some boards and not universal to all RP4.
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Re:Etherify: Transmitting Morse Code via Raspberry Pi Ethern... by jeffwheeler on Monday January 15, 2024 @10:58AM (#39002267)
They may be measuring the RGMII between the SoC and PHY instead of the 100BASE-T1.
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Re:Etherify: Transmitting Morse Code via Raspberry Pi Ethern... by pcdoodle on Monday January 15, 2024 @09:53AM (#39001619)
The cable was connected in the test.
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Re:Etherify: Transmitting Morse Code via Raspberry Pi Ethern... by oarla on Monday January 15, 2024 @09:57AM (#39001654)
Not in the demo video published in the author's blog: https://lipkowski.com/etherify3/
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Re:Etherify: Transmitting Morse Code via Raspberry Pi Ethern... by pcdoodle on Monday January 15, 2024 @11:09AM (#39002415)
Holy crap! I stand corrected. That's quite a waist of energy to have that ethernet block powered up all the time.
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