[RTTY] K3S with AFSK

Joe Subich, W4TV lists at subich.com
Tue Apr 25 10:17:09 EDT 2017


On 4/25/2017 10:04 AM, Ed Muns wrote:
 >  Set MMTTY taps to 512 too.

AND *check* TxBPF (TX tab) it is not checked by default.
TxBPF is not needed for FSK and increases the processor
load (for marginal systems) on AFSK.

You will also want to set Freq (bandwidth) to 600 Hz (or
enter 400 Hz manually).  300 Hz is too narrow with 512
taps.

73,

    ... Joe, W4TV


On 4/25/2017 10:04 AM, Ed Muns wrote:
> AFSK on the K3/K3S is fine with low tones if the radio AFSK TX filter
> is enabled. Set MMTTY taps to 512 too. Make sure to set the same
> audio  tone pair in both the radio and MMTTY.
>
> 73,
> Ed W0YK


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