Re: [wsjt-devel] Settings Split operation: Rig vs. Fake It

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

On 11/05/2021 09:34, Claude Frantz wrote:
> Hi all,
>
> If I understand well, the "Rig" setting uses 2 VFO's which are set to 
> different frequencies, if necessary and the "Fake It" setting uses 
> only one VFO which frequency is changed if necessary.
>
> My observation is that some rigs, having more than one VFO, have the 
> ability to be used with the "Rig" and the "Fake It" settings, but the 
> switching time is very different. Often, when using "Rig", the 
> switching time becomes larger, even too large or, at least, marginal. 
> This behaviour has been observed with the ICOM IC-725 and the Yaesu 
> FT-2000.
>
> How often does my observation apply to other rigs ? Is this difference 
> in the switching time only related to the rig itself or are there 
> additional reasons ?
>
> Best wishes,
> Claude (DJ0OT) 

Hi Claude,

WSJT-X sends CAT commands to set the frequency, and mode if requested, 
before going to transmit or after returning to receive. On some rigs 
this can take significant time, particularly is a slow baud rate is 
chosen. The bottom line is select the setting that works best for your 
setup, and in exceptional cases having "Settings->Radio->Mode->None" may 
be needed to get the required responsiveness.

73
Bill
G4WJS.