Re: Full duplex mode for Satellite operations #EnhancementReqest

Hasan Schiers N0AN

It would be a good idea to check with the owners of any particular satellite to find out if they allow FT4 or any other constant carrier mode on their Linear birds. 

It is very hard on the power budget of a linear bird to have multiple stations key down for excessive periods of time. For this reason, SSTV, RTTY , and FM are NOT permitted on linear birds. 

FT8 would be a VERY selfish mode to run on a linear satellite. FT4, with it's 7 second tx cycle might seem marginally acceptable, but still not power budget friendly. 

In any case, before people get excited and try to popularize FT4 on a given satellite, please check with the Sat owners to find out if that mode is acceptable, given the power budget of the bird.

Just because something can be done, doesn't mean it should be done. Actions have consequences, and may affect the entire user community of that bird.

73, N0AN

On Sat, Aug 28, 2021 at 2:08 PM W0DHB <dave@...> wrote:
Satellite FT4 operations are starting to become popular.
Full duplex operation can currently be accomplished by running 2 instances of wsjt-x.

It would greatly simplify satellite operations and save screen real estate if there were a Full duplex mode in wsjt-x


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