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Re: [Discuss-gnuradio] VGA-based DVB-T modulator
From: |
Daniel O'Connor |
Subject: |
Re: [Discuss-gnuradio] VGA-based DVB-T modulator |
Date: |
Tue, 14 Jun 2005 09:34:00 +0930 |
User-agent: |
KMail/1.8 |
On Tue, 14 Jun 2005 08:17, Johnathan Corgan wrote:
> I sure wish I could remember where to find it, but I've seen
> demonstrated a program that would generate valid AM waveforms by
> displaying certain pictures on a video screen. You'd enter a target
> frequency (I think in the HF range) and choose a MIDI sound file, and it
> would "modulate" the CRT display to emit RFI at that frequency with the
> tones riding as AM modulation. Very spooky. It was a demonstration of
> the security hazards associated with CRT displays (TEMPEST stuff) in a
> very palpable way.
There's a link on the page Seth sent..
http://www.erikyyy.de/tempest/
--
Daniel O'Connor software and network engineer
for Genesis Software - http://www.gsoft.com.au
"The nice thing about standards is that there
are so many of them to choose from."
-- Andrew Tanenbaum
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