QO-100 / how to use transverter for logging


I have started using QO-100 and thought it might be a good idea to use the transverter-function within DXKeeper. But there is no transverter for 13 cm and 3 cm availible.
Is there any way to add such a transverter-setting? Or use a customizing of those? Any other ideas, how to log the correct freq for those QSOs?
Thanks for your help!
Suitbert, DF2PI

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