[Elecraft] [KX3] RS232 xcvr control when serial ports are occupied

[Ken Winterling]

Get an inexpensive RS-232 breakout box.  The LEDs and jumpers will help you
see what is happening on the data and control lines and enable you to
make/verify any cable you need.  Compact gender changers address the
male/female connector issue as well as the 25 pin/9 pin conversion.  I
still have a couple boxes that I used back in the 70s.

Ken
WA2LBI

On Tue, Jul 10, 2018 at 08:30 George Danner <gdanner12 at gmail.com> wrote:

> In broadcasting - we learned very quickly interfacing equipment with
> RS232,
> that if it worked once it would continue to work.
>
> Back in the beginning of using RS232 interfaces (cira. 70s) one of our the
> engineers made a box with input/output pigtails in both male and female
> with
> a rotary switch that switched between straight through and "reverse" for
> all
> the various signals. Later we added 9 pin pigtails. Using that box quickly
> let us know what would work and how to make the interface cable.
>
> 73
> George AI4VZ
>
>
> -----Original Message-----
> From: Walter Underwood
> I never really understood RS-232 until I read “Technical Aspects of Data
> Communication” by John McNamara. Very clear. Not sure it is worth getting
> the book just for that, but you might check a library.
>
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-- 

Ken
WA2LBI

Sent from one of my mobile devices