[URC] Using a SVGA card as part of a direct synthesis SDR?

[David Basden]

On Mon, Nov 22, 2004 at 01:12:41PM +0800, Matt Johnston wrote:
> On Mon, Nov 22, 2004 at 01:11:09PM +0800, David Basden wrote:
> > On Mon, Nov 22, 2004 at 12:05:26PM +0800, Matt Johnston wrote:
> > > A while back (like, at high school writing stuff in visual
> > > basic) I made a little program to display things on the
> > > screen (a modulated sine-wave), alternating between two
> > > patterns, and on the radio nearby I managed to get it to
> > > produce a few tones (I assume it was AM). Of course it was
> > > fairly rough, I was ignoring the blanking etc, and wasn't
> > > exactly driving a proper antenna or anything...
> > 
> > Cool :)
> 
> Ah, found the software I was thinking of:
> http://www.erikyyy.de/tempest/

Wacky. Deliberate van Eck phreaking. He's using the monitor to
radiate, which has got to be really ugly on the spurious emmissions :)

There's also an apparent link to Van Eck's (aparrently deliberately
crippled from meory) paper. I thought that the US government classified
it?

> > I wonder if you could convince it that the framebuffer was 1
> > pixel high and very, very wide.
> 
> Hmmmm. Might work?

Yeah, it might be pushing my luck. Worth a look though :)

David