[Elecraft] K3 RTTY program

[Don Wilhelm]

  Joe,

The 45 and 75 are the RTTY baud rates - they must be set to the same 
rate as the originating station is sending.
To decode using K3 Utility (or the VFO B text area), turn on CWT, reduce 
the passband width and tune for 3 bars on each side of center in the CWT 
indicator.  Most RTTY operation is at 45 bps.

If your line output level changes with the AF Gain, you must have the 
CONFIG: LIN OUT menu parameter set to "=phones" - set it to "nor" - tap 
the "1" button to toggle (see the manual page 20 and page 57).

The MIC + LIN menu entry is "not applicable" for data modes - so you can 
leave your settings in place for SSB operation and set the MIC SEL to 
LINE IN independently for data modes.  If you bring up the MIC SEL menu 
entry and cycle through all the modes, you will see that it is 
independent in DATA.

73,
Don W3FPR

On 9/23/2010 4:42 PM, W8JH wrote:
> I have decided to try the AFSK-A method.  After a false start I got MMTY
> going on receive only for now.  The tuning scope thing is a big help.  I am
> surprised that the K3 doesn't decode what MMTY does, I have tried the 45 and
> 75 setting in AFSK and nothing helps, it is as garbled as when I tried K3
> Util.  It also seems that the sound output from Lin Out plug on the back
> (set at nor-10 in the K3) varies with the AF gain control.  Is this normal?
>
> Getting ready for transmit I have turned off Windoze sounds and disabled the
> internal mic on the laptop.  I would like to leave the CM-500 plugged in for
> SSB use and also have RTTY ready to go.  Should Mic + Lin be set to on to
> make this possible?
>
> 73,
>
> Joe, W8JH   K3 1713