[TRLog] LPT port queston

[n6tr@teleport.com]

> According to the manual, you can use one LPT port for CW paddle
> input or radio switching output but not both. It would seem to
> me that this is because there is not always voltage on pin 14
> for pullup.
> My question is - can you get around this if you have another
> source of + 5 volts for pullup on pins 12 & 13?

Sure.  I use one port to do both radio relay control and paddle
input - making my own pullup voltage with a +5V regulator off of
+12V.

Tree

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