[Elecraft] K3-RTTY-No Diddles

[Ed Muns]

EXTFSK is only required if a USB-Serial interface is used which doesn't have
an adequate UART implementation to support 45 baud and the 5-bit code.  The
Digi International Edgeport/4 and /8 interfaces work fine without EXTFSK.
The microHam interfaces also work fine without the EXTFSK module.

Ed W0YK

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Ed K6ED wrote:

You are stating that you are trying to use FSK.  MMTTY requires "EXTFSK" 
to be added to the MMTTY folder for it to be functional for FSK.  Also 
EXTFSK needs to be configured.  A small window will appear showing the 
lead assignments.  These must agree with the com port assignments 
associated with the USB Router.  EXTFSK is available on the MMTTY Web 
Site, just scroll down the MMTTY page and you will find where to 
download it.  The page also has an excellent explanation on how to use 
EXTFSK.  In addition make sure you have the K3's data mode set to FSK 
D.  Should work, works for me.