[Elecraft] K2 External Keying

[John]

I think Dave needs to select Hand in the inp menu, and not pdl....

John
k7up


At 01:18 PM 17/12/07, you wrote:
>Dear Dave,
>
>You need to use the transistor circuit too. It does 2 things, first it
>makes the RS232 levels, which are often +12V and -12V, compatible with the
>K2 (applying -12V to the keying input is probably not a good idea), and
>second it inverts the keying. I think the inversion is what is giving you
>the continuous tone which is the sidetone. The incorrect sequence of dots
>and dashes are then the spaces in the message rather than the dots and dashes.
>
>73 Kevin w9cf
>
> >I have configured my computer and paddle according to Figure 8-1 on page 92
> >of my K2 owner's manual. According to the N3FJP software I connected the
> >keyline to pin 7 of the d-sub and ground to pin 5. I selected INP PDLn and A
> >DET On in the K2 menu. When I turn on the K2 I hear a low frequency steady
> >tone coming from the K2 speaker. When I tell the N3FJP software to send a
> >message, the message is heard but it is not the correct sequence of dots and
> >dashes.  N3FJP shows a transistor interface in the help section. However, I
> >am using the two diodes shown in Figure 8-1. Can anyone help me solve this
> >problem?
> >
> >73,
> >Dave Kent
> >K0TCP
>
>=-------------------------------------------------------------
>Kevin Schmidt, w9cf at ptolemy.la.asu.edu, http://fermi.la.asu.edu/w9cf
>Department of Physics
>Arizona State University, Tempe, AZ 85287-1504
>(480) 965-8240 Fax: (480) 965-7954
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