K2 - KUSB PROBLEM

[WD6DBM]

My K2 does not work with my KUSB when using HRD.  I get a constantly changing freq display (of different lengths), and the other fields such as NB do not read correctly. 

HOWEVER, there are no problems when using an older Keyspan Serial Adapter on the K2.  Hooked up to the same computer, HRD works fine.  ALSO, when using the K2 with an XV transverter it works fine as well.  I am using the KUSB to connect the K2's KIO2 cable to the computer--not a direct hookup between the K2 and the computer.

>From this I concluded that the KIO2 and cable were not the problem.  The problem was the KUSB.  I told my sad tale to Elecraft Support, and they gleefully sent me a new KUSB.  It works just like the old one, which is to say it doesn't work! 

I am using the latest firmware for the KUSB.  The KUSB also does not work with a serial card (PCMCIA) plugged into my shack laptop.  This serial card is normally used with my K3 and works FB. 

Does anyone have a clue as to what could be wrong?  There must be many K2 users out there using a KUSB to communicate with their computer. 

Thanks,

Eric WD6DBM  
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[Julian, G4ILO]

The KUSB uses a Prolific chipset and it has problems when using slower baud rates and 2 stop bits. I experienced exactly the same behaviour with two different adapters (both using Prolific chipsets, though not bought from Elecraft) when I tested my K2 with KComm.

I believe the Keyspan uses an FTDI chipset which is somewhat better. Therefore the solution is probably going to be to use the Keyspan. I did find that the Prolific adapters sometimes work better by setting the serial port settings to 1 stop bit, but the baud rate of the KIO2 is fixed at 4800 so that can't be changed.

[Phillip Buckholdt-2]

Also the KIO2 is not a RS-232 port ! You need to use the proper cable.

     Phil K8MBY
     K-3 #609 and several K-2's

----- Original Message -----
From: "Julian, G4ILO" <[hidden email]>
To: <[hidden email]>
Sent: Wednesday, January 27, 2010 6:12 AM
Subject: Re: [Elecraft] K2 - KUSB PROBLEM

>
> The KUSB uses a Prolific chipset and it has problems when using slower
> baud
> rates and 2 stop bits. I experienced exactly the same behaviour with two
> different adapters (both using Prolific chipsets, though not bought from
> Elecraft) when I tested my K2 with KComm.
>
> I believe the Keyspan uses an FTDI chipset which is somewhat better.
> Therefore the solution is probably going to be to use the Keyspan. I did
> find that the Prolific adapters sometimes work better by setting the
> serial
> port settings to 1 stop bit, but the baud rate of the KIO2 is fixed at
> 4800
> so that can't be changed.
>
> -----
> Julian, G4ILO. K2 #392  K3 #222.
> * G4ILO's Shack - http://www.g4ilo.com
> * KComm - http://www.g4ilo.com/kcomm.html
> * KTune - http://www.g4ilo.com/ktune.html
>
> --
> View this message in context:
> http://n2.nabble.com/K2-KUSB-PROBLEM-tp4466419p4466529.html
> Sent from the Elecraft mailing list archive at Nabble.com.
> ______________________________________________________________
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>

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[K2QI]

KUSB didn't work properly with my K3 and HRD either.  HRD would freeze or
lose connection intermittently.  The KUSB worked fine with other programs
and the K3 Utility though.

I ended up replacing the KUSB for a Keyspan adapter; no problems since and
haven't looked back.

James K2QI

-----Original Message-----
From: [hidden email]
[mailto:[hidden email]] On Behalf Of eric norris
Sent: Wednesday, January 27, 2010 5:36 AM
To: [hidden email]
Subject: [Elecraft] K2 - KUSB PROBLEM

My K2 does not work with my KUSB when using HRD.  I get a constantly
changing freq display (of different lengths), and the other fields such as
NB do not read correctly. 

HOWEVER, there are no problems when using an older Keyspan Serial Adapter on
the K2.  Hooked up to the same computer, HRD works fine.  ALSO, when using
the K2 with an XV transverter it works fine as well.  I am using the KUSB to
connect the K2's KIO2 cable to the computer--not a direct hookup between the
K2 and the computer.

>From this I concluded that the KIO2 and cable were not the problem.  The
problem was the KUSB.  I told my sad tale to Elecraft Support, and they
gleefully sent me a new KUSB.  It works just like the old one, which is to
say it doesn't work! 

I am using the latest firmware for the KUSB.  The KUSB also does not work
with a serial card (PCMCIA) plugged into my shack laptop.  This serial card
is normally used with my K3 and works FB. 

Does anyone have a clue as to what could be wrong?  There must be many K2
users out there using a KUSB to communicate with their computer. 

Thanks,

Eric WD6DBM  
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[Julian, G4ILO]

Phillip Buckholdt-2 wrote

Also the KIO2 is not a RS-232 port ! You need to use the proper cable.

It's true you shouldn't plug the other end of the USB adapter straight into the socket on the K2 or you'll blow up the AuxBus. My adapters are terminated with the wrong gender so it's impossible to do anyway, you still need the made-up K2 serial cable.

[N1IX-2]

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Dave N1IX

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[DL5OCD]

Hello Eric,

be careful when using RS-232 cable with your K2, you can destroy the TRX !!!

73
Michael