On Tue, Sep 1, 2009 at 2:04 PM, Chris Kantarjiev<[email protected]> wrote:
>
> Can anyone suggest a simple design or readily available unit?

Disembowel a (preferably cheap) cig lighter power adapter.  A USB
model will be 5V.

It may or may not fit inside a DB9 shell, though.

-Jason
kg4wsv

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