You mentioned ham radio — definitely fun! It’s a process to get into it though, as you need to study/pass an exam, and then you need a radio. Radios range from cheap ($25 or so) in the VHF/UHF (“walkie talkie”-style) to more expensive for an HF rig ($1000 range for 100W HF). If you want to get into low power (“QRP”) it can be much cheaper. You also need a fair amount of space for a good antenna setup…
There are tons of different communication modes, some without a computer and, like you mentioned, some that use computers. wsjtx
and fldigi
are popular programs.
Good luck!
Compensation for engineers in the Bay area will average much higher than $200k, and that’s not counting benefits (medical, etc.). So cost to the company will be way higher than 200k/employee.
For a project that has hardware, there will be large expenses associated with that — custom silicon has huge setup costs, for example.