Splicer I am in the process of doing the same thing. I bought a Semv8 (MOTOROLA) (App. $8,000) and a Videotek DMM800 Demodulator ($2,000). If you are not DAC controlled then you will need a PC. I am in the process and having a little problems multiplexing but hopefully it will work out. Any more questions more specific I will be glad to answer as to what I have done and doing.
This is CABL.com posting #184192. Tiny Link: cabl.co/mV40