[Elecraft] K2 PSK TX/RX offset problem solved

[Charles Greene]

Julian,

Here's two of my K2 macros to do the same thing:

To go to Narrow (FL4): <LOCKTX><CATCMD:SW15;SW15;FW00001;FW00004;SW33;>

To go back to wide (FL1): 
<UNLOCKTX><CATCMD:SW15;SW15;FW24001;FW00002;SW33;RC;FW00001;>

There's a couple extra steps in there to get you, or keep you in the FINE 
RIT mode.

And to align, just: <UNLOCKTX><ALIGN:1500>

You can also combine align with the filter selection command to bring 
everything to the center frequency of your filters.  Mine are all centered 
on 1500 right now, but I have had them at 1200.

At 03:52 PM 11/29/2002 +0000, Julian (G4ILO) wrote:
>For those of you who use the fabulous MixW program for data modes, I think
>I have come up with a solution for the well-known problem of the K2's
>receiver changing frequency slightly when a narrow filter is engaged. The
>solution is basically to always use a macro to switch in the narrow filter,
>(using a CAT command) and to include in this command a MixW command to lock
>the TX frequency so that it doesn't change when MixW's AFC tracks the
>frequency change that it sees on the received signal.
>
>The macros I use are:
>
>Select Narrow (Gray -): <LOCKTX><CATCMD:FW00002;>
>Select Wide (Gray +): <UNLOCKTX><CATCMD:FW00001;>
>Center Signal (Gray *): <UNLOCKTX><CATCMD:FW00001;><ALIGN:1200>
>Seek Right (<<): <UNLOCKTX><CATCMD:FW00001;><SEEKRIGHT>
>Seek Left (>>): <UNLOCKTX><CATCMD:FW00001;><SEEKLEFT>
>
>AFC and SNAP are always ON in my configuration (I'm not entirely sure of
>the difference between AFC and SNAP, so I'm not sure if this is right, but
>it doesn't seem to do any harm.)


SNAP, as I understand it, "snaps" you onto the signal quickly, as AFC moves 
slowly.


>In all the macros that change the frequency, you'll notice that as well as
>unlocking the TX frequency I also select the standard filter again, so as
>not to inadvertently start receiving another station with a TX/RX frequency
>offset.
>
>I haven't noticed any problems since I started using these macros, but I'd
>be interested in comments from other MixW users.
>
>On a related topic I'd like to pass on a tip I saw in another forum: the
>program QuickMix from www.msaxon.com. This free program can save mixer
>settings and restore them from the command line. So you can run it
>automatically when MixW starts up (using the OnStartMixW macro) and have
>your mixer settings automatically set to the optimum positions.
>
>Happy warbling.
>--
>Julian, G4ILO. (K2 #392)
>Homepage: http://www.qsl.net/g4ilo


73, Chas, W1CG
K2 #462