Find replacement fob ("remote key") for Galant 98

Hi There!
My dad's fob is almost dead, I have tried to repair it, resolder all connections, etc and it rarely works...
I was wondering if there is any generic programmable remote for this car. This is the type of remote he has:
https://cdn11.bigcommerce.com/s-g53f...267391.jpg?c=1
Does anyone know if the programming procedure can be done "at home" with no specific tools?
Or if not maybe someone knows the frequency and or type of coding it uses so I can try to find a compatible one?

Thanks in advance!

check out the facebook forums. I doubt there are many 7G owners who stop by.

Ok, I found a fb group called "Mitsubishi Galant FanClub" and I posted it there
Thanks for the hint!

no problem.