Re: [RTTY] Help for FT-1000-MP Mark V

[Tom Homewood <w1to@roadrunner.com>]

You may have to change one of the menu setting if you use LSB and FSK, 
to avoid send in reverse.
I think it is easier to use the filters if you use FSK, but it can be 
done in AFSK. Some menu settings need to be changed.
73 Tom W1TO

On 3/31/2015 12:15 AM, Kok Chen wrote:
> On Mar 30, 2015, at 9:04 PM, John L Merrill wrote:
>
> > Someone might correct me but FSK on this radio is actually keyed AFSK like
> > it was in the FT1000 and FT990.
> Starting with the FT-1000MP, the 1000-series performed FSK using the DDS chip.  
> They are true FSK transmitters (with all the honest and goodness, dirty FSK 
> sidebands :-).
>
> You are correct about the FT1000/D and FT-990.  Those generated AFSK by using a pseudo 
> 3-bit D/A converter (a register with resistor weights) with the clock frequency keyed by 
> the FSK keying line ("keyed AFSK"), so at least they are phase continuous.
>
> With the FT-1000MP, "RTTY" selects FSK, while "PKT" selects AFSK.
>
> 73
> Chen, W7AY
>
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