[aprssig] (no subject)

Wes Johnston aprs at kd4rdb.com
Sun Feb 20 09:40:36 CST 2005

Tiger Direct is selling 1gig CF cards for $69.  That's enough to hold a knoppix
or mepis CD image.  The ituner store (
http://store.ituner.com/ituner/emstcfl.html ) has several compact flash to IDE
adapters for $20.

Anyone got a schematic for a watch dog timer? I'm thinking if a TNC's PTT line
doesn't go low once every 10 minutes, we need a pulse on the PC's reset button.


Quoting Curt Mills <archer at eskimo.com>:

> On Sat, 19 Feb 2005, A.J. Farmer (AJ3U) wrote:
> > Don't be too afraid of running a PC at a remote site.  When a PC is set up
> > for a specific task, it is much more reliable than you might think.
> Extreme
> > temperature issues can be overcome.  Putting the PC in a simple plywood box
> > goes a long way to controlling temperature extremes if needed.  You can
> > insulate the box if needed.  If you can get away from the hard drive and
> run
> > off of a floppy and RAM disk like Henk said, then you are almost 100% solid
> > state which is not far off from your TNC.
> You can also go with flash drives in IDE or PCMCIA adapters. so that
> the computer sees them as an IDE hard drive.  That's a quick way to
> get rid of rotating media.  Just make sure the computer doesn't try
> to write to it all the time else you'll burn up your flash and have
> to replace it.  Reading is fine.
> This setup is good for mobile platforms like SAR vehicles.  Flash is
> getting cheaper all the time.
> --
> Curt, WE7U.				archer at eskimo dot com
> http://www.eskimo.com/~archer
>   Lotto:  A tax on people who are bad at math. - unknown
> Windows:  Microsoft's tax on computer illiterates. - WE7U.
> The world DOES revolve around me:  I picked the coordinate system!"
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