Re: [wsjt-devel] FT8 with YAESU FT920

[Bill S. <g4...@cl...>]

On 07/03/2018 09:39, Hans Piehler wrote:
>
> Now all stations are in the above range more than 2000.
>
> I think this is not the normal range to compare with the FT817.
>
> If I change the mode from DIG to USB, I have all stations in the 
> normal range but
>
> no modulation comes to the backside connector.
>
Hi Hans,

Yaesu rigs usually have two menu settings that set the VFO display 
offset and shift for their USB-DATA modes (DIG), these need adjusting so 
that the dial frequency and passband are correctly aligned. Often zero 
for both is correct as that equates to a voice SSB passband with the 
dial frequency at the suppressed carrier frequency and the audio 
passband between 0Hz and ~4000 Hz and maximum width. Yaesu are not 
consistent with these parameters with the shift on some rigs allowing 
movement between LSB and USB, those need a positive shift of roughly 
half the maximum width to centre the IF passband on the USB side.

73
Bill
G4WJS.