[Elecraft] Connections for K3S, P3 Revisited

[Lyle Johnson]

Be sure the RJ-45 portion of the K3S<->P3 "Y" cable is fully seated.  
Sometimes the rubber boot slides a bit on the connector and it appears 
to be fully mated, but isn't.  It must be seated until the plastic tab 
on the RJ-45 clicks.

There is a jumper connection in the RJ-45 connector on this cable that 
tells the K3S that this cable is in use.

The fact that with nothing connected to the DE-9 connectors, you appear 
to be communicating with the K3S over USB (your step 6) suggests that 
the jumper is not being detected, which is why I suspect the cable may 
not be fully seated.

73,

Lyle KK7P

> Let me summarize my tests in hope someone has an idea.
>
> 1. I have followed the instructions.
> 2. I am using the proper cable.
> 3. As far as I know.
>
> It seems simple.
>
> 1. Set K3S CONFIG:RS232 to USB. Connect USB between computer and K3S.  
> [CHECK]
> 2. Connect CBLP3Y to P3 (top+bottom) and K3S RJ-45 Serial. [CHECK]
> 3. The COM Port assigned and working in Step #1 no longer works.
>
> 4. Repeat step #2, only connecting the lower connection to the P3. No 
> joy.
> 5. Repeat step #2, only connecting the upper connection to the P3. No 
> joy.
> 6. Repeat step #2, only connecting the RJ-45 and nothing on the P3. 
> COM for #1 works.