Paul,

Yes, but... it needs a DE9 male on one end, a DE9 female on the other. The computer port has a male jack and the K2 has a female jack. Look at the cable construction information in the KIO2 or KPA100 manuals.

You have the pins correct, but the wire you have will not likely provide enough isolation - If you do not have the proper 4 conductor shielded cable, I would suggest that you use CAT-3 or CAT5 wire which has twisted pairs (you need two twisted pairs) to take advantage of the signal isolation the twisted pairs will provide - connect one side of a pair to pins 3, and the other side of the same pair to pin 5 - a second pair connects one side to pin 2, and that pair's return is also connected to pin 5. If the CAT5 or CAT3 cable is shielded, I would connect the drain wire to pin 1 at the K2 end only so it acts like a faraday shield - caution: pin 1 at the computer end is NOT the shield connection (it is carrier detect), if you want to connect a shield at both ends, connect it to the DE9 shell at the computer end (see RS-232 pinout for DE9 connectors)

73,
Don W3FPR

[EMAIL PROTECTED] wrote:


So the K3 F/F DE-9 serial cable only needs TX, RX, and SG?

Pins 2, 3, and 5 only...

Straight through...

I've got some cable with one twisted pair inside a foil shield with an un-insulated ground wire (I believe it's called the drain) in there too, and it contacts the foil shield full length. Would that work?

Should I slip some ferrites (which I already have) over the cable's jacket before soldering the DE-9/F's on?

73,

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