A good hand, one 14MHz crystal and a file ?

Vasile

On 8/30/06, Philip Pemberton <philpem@dsl.pipex.com> wrote:
> Hi,
>   I don't know if anyone else has noticed this, but there's a full design for
> an RFID reader in the current issue of Elektor (September 2005). Only problem
> is, it needs a 13.56MHz fundamental-mode crystal - as far as I can tell,
> 13.56MHz is not a standard frequency. Does anyone know where I might be able
> to get one of these crystals, or a 27.12MHz fundamental-mode crystal? TTL
> oscillators would also be fine...
>
>   Failing that, can anyone suggest a way to generate a stable 13.56MHz square
> wave? Bonus points for cheapness and "junkbox buildability" (i.e. if it can be
> built out of stuff commonly found in a hobbyist's junk box)...
>
>   The design in question is the "Experimental RFID Reader" by Martin Ossmann,
> Elektor September 2006, p.34-38.
>
> Thanks.
> --
> Phil.                         | Kitsune: Acorn RiscPC SA202 64M+6G ViewFinder
> philpem@dsl.pipex.com         | Cheetah: Athlon64 3200+ A8VDeluxeV2 512M+100G
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