16-05-2024, 02:52 PM
That's why two chips. The Sound input is using NTSC/SECAM/PAL offsets, not the lower System A.
Though there is a version of the chip where you can feed in a subcarrier of any frequency, (like Nicam), but you'd need a separate 3.5MHz AM LO.
Though there is a version of the chip where you can feed in a subcarrier of any frequency, (like Nicam), but you'd need a separate 3.5MHz AM LO.
