[Elecraft] RTTY via FSK-D

[Richard Ferch]

The "Invert logic" option in MMTTY only applies to PTT. The UART's FSK 
output cannot be inverted. If you are using EXTFSK, there is an option 
to invert the FSK logic in EXTFSK. This is immaterial with a K3, though; 
all you have to do is adjust CONFIG:FSK POL (set it = 1 for normal 
polarity).

73,
Rich VE3KI


W6SX wrote:

> I've never had occasion to use it and maybe I misunderstand what it is
> supposed to do, but it looks as if one can switch MMTTY transmit logic as
> follows:
> 
> Open MMTTY
> 
> Option
> 
> Setup MMTTY
> 
> TX
> 
> Check or uncheck Invert Logic