Normal and reverse mode on FT847 wthit GPREDICT

Hello world
I try to understand this processus.
Actualy, if I press (L) in GPR, no problem VFO A and B are locked, and work in same direction.
To reverse (no possibilityu on GPREDICT ??) , I must press TRACK , and REVERSE on FT847.
GPredict are VFO A and B are inverted, but if I depress (L) , VFO A and B continu to be inverted.
I think there are something, someone can help me?
Thank you.

Hi @F1SSF

I’m not sure what you mean by reversed and inverted. Do you mean inverting transponder on the satellite or swapping VFO A/B?

Hi Alex
Sorry, my english is poor…no it is tracker reverse.
VFO A frequency increase, VFO B frequency decreases

I think that works correctly if the transponder info says “Inverting: YES”, see screenshot:

ksnip_20200405-094117

Which satellite are you having problems with? Perhaps we need to update the transponder data in the SatNOGS database.

:+1: Alex, , I did not know this possibility to update. This data base is marvelous .

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It is a recent feature and still sort of experimental on the Gpredict side. Feedback is welcome.