full-disclosure - Re: [FD] Etherify 4 - jumping air gaps with real ethernet hardware

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Message-ID: <alpine.BSF.2.21.9999.2012010912330.85468@aneurin.horsfall.org>
Date: Tue, 1 Dec 2020 09:17:03 +1100 (EST)
From: Dave Horsfall <dave@...sfall.org>
To: Full Disclosure <fulldisclosure@...lists.org>
Subject: Re: [FD] Etherify 4 - jumping air gaps with real ethernet hardware

On Fri, 27 Nov 2020, Jacek Lipkowski wrote:

> The implementation is deliberately very primitive (shell scripts, uses 
> native system tools). The data is transmitted via very slow morse code 
> (QRSS CW), which can be decoded visually on a spectrogam. This way one 
> can judge the signal/noise ratio by eye.

I'm impressed, but for all the wrong reasons :-)

> Jacek / SQ5BPF

-- Dave VK2KFU

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