[Elecraft] Connections for K3S, P3 Revisited

[Don Wilhelm]

Byron,

See page 18 of the K3S manual for connection to the P3 if you are using 
the USB port on the K3S.
You must use the CBLP3Y cable between the K3S RJ-45 connector and the 
P3.  Note that the connector with 2 cables plugs into the XCVR DE-9 
connector on the P3.

If you are using a USB to RS-232 adapter between the computer and the 
P3/K3S, refer to the diagram on page 19 of the manual - connect the USB 
to RS-232 adapter to the P3 "PC" connector and connect the P3 XVTR 
connector to the K3S using the E980297 DE-9 to RJ-45 cable.

Read pages 18 through 20 of the K3S manual.

73,
Don W3FPR

On 9/25/2015 9:29 PM, Byron Peebles wrote:
> I have had the K3S, KAT500 and KPA500 connected and configured.
> All units are connected to the computer via USB so I can use the 
> appropriate Utility.
>
> Now, when I try to connect the P3 to the K3S there is this behavior.  
> I can only use the USB *or* the RJ45 serial.  Once I connect to the 
> RJ-45 serial, the USB is disconnected at the K3S and I lose access to 
> the COM port(s).
>
> I am guessing there is no value to the RJ-45 port once I decide to use 
> USB, and I should use the USB-DB9 connector to connect the P3 to my PC 
> for the P3 Utility.
>
> I thought I had seen something where the PC connected through the K3S 
> or P3 to the otyher, but I can't find that documented so I think it's 
> recovered childhood memory.
>
> In summary, I expect to connect PC-to-P3 via USB-DB9 and have only the 
> DC-power and IF-BNC between the K3S and the P3.  DO I HAVE THAT CORRECT?
>
> 73, Byron
>
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