Fetaure request: Custom frequency Doppler correction

[4O4A]

Hello,
What I would like to see is a custom frequency Doppler correction on linear satellites, either uplink or downlink.
When downlink frequency is entered, I would like to see what should be the uplink frequency. A lot of hams use only one radio, this information might help them to find correct uplink/downlink frequency.

[ON4ASG]

Hi,
Yes this exactly what I need! Working half duplex on linear satellites would be possible.
If one could predict where to find exact downlink frequency after doppler, or viceversa where to transmit for a given downlink frequency.
Would really be great!!!
By the way ...by now already fantastic app!!!
Cgrts, Hans
ON4ASG