Roger,
Use the straight through cable. For your future reference, that is the
information that can be found in the K3 manual on page 18 in the
description of the KIO3 module.
Only 3 wires are required in the cable TXD, RXD and Signal Ground (pins
2, 3, and 5) for communication with the K3. DTR and RTS are also
available for PTT and KEYING from the computer serial port, so if you
plan to use those in the future, buying the serial M/F cable would be a
good choice.
73,
Don W3FPR
Roger Marrotte wrote:
I find that the serial cable I have on hand that I used for my former radio
is female to female. I see that the K3 requires a male connector. I've
looked through the archives without much success. Am I the only one that
finds the archives difficult to use? I know that I could cut off one end of
my cable and solder on a male connector. I also see that Radio Shack has a
pre-made cable described as a 6-Ft. DB9 M/F Extension Cable #26-117. I'm
leaning toward this option because the Radio Shack has nice knobs vs. screws
to attach and detach the cables. In either case I need to know if the K3
requires a straight through cable or a null modem cable where the transmit
and receive lines are reversed. I looked for this info in the K3 manual and
couldn't find it. I'm assuming the Radio Shack "Extension" cable is
straight through.
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