[amsat-bb] TS-790 and sat comunication

Hello folks, Recently I have in my station a TS-790 for satellites. In the past the radio used for this activity was a IC-821. On that radio, for sat activity, is suggested to use the main band for downlink reception and the sub band for the uplink. This because the reception in main band is better instead of sub receiver. And the radio, when sat mode is selected, allow that configuration. Now on the TS-790, Have I to follow the same setup? This because, I have done many attempts to use this radio how the Icom without results.

Tnx for your time 73 Mario IK1ZQJ