Our uplink is digital. Right now we have chosen AX25 to make things easy. We don't need to send video to the spacecraft.
Your forgetting about bandwidth/SNR again. Digital will require more than we can afford.
Once we decide on a format that we find sustains our minimum requirement we can announce it.
we are shooting for the 6-12khz range we can go as high as 25khz for the FM system.
Once we switch to eSSB we are limited to 12khz max and that's a limit I'm setting.
Digital uses less power on a larger bandwidth so again it is a trade.
There are some other factors involved as well the final platform should be using the propeller II processor. We are using the R Pi for now because it's an easier swap for now.
We don't have 30 meter dishes on our ground stations
The farther along we get here the more optimistic the team get's so I'm pretty sure this is going to work.
digital is an option if conditions allow use to use it we are starting with analog that's for sure
You have to consider man power and man hours as well we are limited in both as well as funding.
If you have any of the above to spare you are welcome here!