I have successfully (technically speaking) used the shn-24 to combine my cable feed and the TV2 output into one cable. The cable channels appear very clear on the two tv's the line serves. The output from the 322 is very clear also - as long as I do NOT have the cable feed connected to the shn unit. When I connect the cable - the satellite channels work, but are very fuzzy - sound is good and I can change channels - cable channels remain clear. I have not terminated the unused outputs on the shn-24 (75 ohm terminators are recommended). I have changed TV2 modulator from 73 to 75 (it didn't help, but the satellite only reception got noticeably better. thanks in advance for your time.