[Elecraft] KIO 2

[Don Wilhelm]

Allan,

Simple things first - do you have PORT set ON in the menu?

Check and double check the computer cable.  The pin numbers are marked 
in the plastic but are very difficult to see.  At the K2 end (male 
connector pins), you should have pin 1 connected to the shield (the 
shield does not connect at the computer end) and pins 2, 3 and 5 should 
have wires on them - no other connections at the K2 end.  Plug the two 
cable ends together and you should see the wire colors match up across 
the connectors.  Also at the computer end, you should have a jumper 
between pins 7 and 8.

If your cable is correct, the next step is to measure the DC voltages 
and check the inductors with an ohmmeter to be certain they are not open.

It is more difficult to check out the RS-232 to TTL conversion chip (U1) 
without a source that will constantly attempt to connect with the K2 and 
an oscilloscope (N4PY software will continuously attempt to connect, HRD 
gives a few tries and quits).  If the DC voltages do not reveal any 
problem source, I can give you some steps to check the RS-232 to TTL 
converter using DC techniques (it does require that you unsolder one 
wire going to the K2 control panel).

73,
Don W3FPR

Allan Glasdam wrote:
> I have a very good K2 #6444 with super results in QRP contests and now I 
> wanted to connect it to my PC and HRD log program.
>
> Problem: Serial Interface Test: I cannot get the test message 
> (FA000xxxxxxxx) on my K2 and I cannot switch the K2 from the keyboard.
> I went through the first line in troubleshooting except DC voltages.
> Any suggestions where to start will be much appreciated
>
> Allan, OZ8A
>   
>