[Elecraft] K3S K-line cabling

[Don Wilhelm]

David,

Download the latest P3 manual and look on page 5.  You will need the 
CBLP3Y cable.

The KAT500 and KPA500 use the AUX cables and not the serial data.  The 
PC connection shown in the KAT500 manual is for connection to the PC for 
use of the KAT500 Utility and has nothing to do with the normal serial 
data between the K3 and the P3.

To get the serial band data to your antenna controller, use a "Y" cable 
at the PC connector on the P3.

There are other ways of connecting things as shown on page 6 of the P3 
manual, but you will have to connect the PC to the PC connector on the 
P3 and not use the internal USB to serial adapter included in the KIO3B, 
but you will still have the USB soundcard that is internal to the K3.

73,
Don W3FPR

On 10/27/2019 12:08 PM, David Aslin G3WGN wrote:
> I have upgraded my K3 with the KIO3B interface, so my PC is now connected via the USB port on the radio.
> My question relates to the cabling for the complete K-line: K3S KPA500 KAT500 and P3
> The cabling diagrams, even in the latest KAT500 manual, show the PC connected via the PC jack on the KAT500.  As noted, my K3 with KIO3B is connected to a PC via the USB port on the radio.  Which connection should I be using?  What difference does it make?
> 
> I also need to get band data to my Ultrabeam antenna controller (like a Steppir).  Where should I sniff the band data and will a simple Y cable do that?
> 73, David G3WGN  M6O