[Elecraft] ACOM 2000A and Elecraft K3

[Val]

Bill,

According to your description, AUTOINF=NOR is the right setting in 
both cases. Either the ACOM 2000A, or  PC will poll the K3, hence no 
need AUTOINF to be changed.

73, Val LZ1VB


>I think I have figured out the connection issues when using a K3 with
> an ACOM 2000A.  I wrote up the following mini-tutorial to try to
> clarify what is, to me, a confusing situation.
>
> Please read it and let me know if I have made any errors and whether
> you find it helpful.
>
> If you find it helpful, feel free to copy and distribute any way you
> wish.
>
> Thank you,
>
> 73, Bill W6WRT
>
> +++++++++++++++++++++++++++++++++++++++++++++++++++++++
>
>
> When operating an ACOM 2000A with an Elecraft K3, there are two
> possible modes of frequency control. Each mode requires a different
> cable.
>
> When a PC is NOT connected:
>
> Use a cable like that shown in figure 7.6 of the ACOM 2000A manual.
> You should set the K3 AUTOINF menu option to "1". In this mode the
> 2000A will poll the K3 for band data and will change bands
> accordingly. The K3 will also send band data when you manually 
> change
> bands on the K3.
>
> When a PC IS connected:
>
> Use the cable shown in figure 7.2 in the 2000A manual. You should 
> set
> the K3 AUTOINF menu option to "nor".  Note that this cable does NOT
> have the TXD wire going to the ACOM 2000A, but it does have the TXD
> wire running between the legs of the Y connector. This cable can be
> either a single cable terminating in two DB-9 connectors or it can 
> be
> a single cable with a "Y" adaptor connected at the DB-9 end. In 
> either
> case, it must be the electrical equivalent of figure 7.2.  In this
> mode, the ACOM 2000A gets band data information ONLY from the 
> logging
> program, not from the K3. If you close the logging program, the ACOM
> 2000A will NOT follow band changes from the K3. You can still do 
> band
> changes by sending a "dit" as explained in the ACOM 2000A manual.
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