[Elecraft] Fw: RTTY Questions

[Richard Ferch]

MMTTY will do either FSK or AFSK, but in order to do FSK with MMTTY you 
will need additional hardware, namely a keying circuit from a separate 
serial port or USB-to-serial adapter (*not* the same serial port or 
adapter you are using for radio control) connected to pin 1 of the K3's 
ACC connector. Unlike the K3 Utility, MMTTY cannot do FSK on the radio 
control serial port.

If your power supply is adequate to the task, you can safely run the K3 
at full power in RTTY in either AFSK A or FSK D. The K3's finals can 
handle full-power key-down for extended periods. You do still need to 
reduce power in PSK with the K3 in order to maintain linearity, but this 
is not an issue in RTTY.

73,
Rich VE3KI


NU4C wrote:

> I will check out MMTTY. Is it good only for AFSK or does it also support FSK?
> On FSK D the interface cable USB/RS232 that came with the K3 works very well
> with the K3 Utility software.
> Should I run  the rig at reduced power like I do with PSK or is 100 watts oiu
> OK?