On Tue, 3 Jun 1997, Joseph J. Duerbusch K0BX wrote:
> I would suggest the MFJ 232 Interface cable. It takes it power from the
> RS232 port, I have not rfi problems. It is just plug and play.
>
> I have made several of the MAX232 interfaces. They all work well.
> Downside was the need for external 12 volts to run them. Had RF getting
> into one of them.
Eh? If you needed 12 volts, you were NOT using a MAX232. The Maxim part is
a 5 volt single supply part. For even fewer parts count, the MAX233
includes all the charge pump capacitors.
A few bypass caps would have eliminated RF issues.
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