My own cable head end: 3 ATSC to analog channels

[wa2ise]

It's 3 CECBs, two of them modified to modulate on channel 2 and the other channel 5, and the Zenith box set to channel 4. So sets like the Admiral will have a choice of channels tunable on its own channel dial.

These modulators don't strip off the lower sideband, so normally the next lower channel is full of trash and not usable. So that's why no channel 3. But because there's 4 MHz between channel 4 and 5, channel 5's lower sideband trash stops short of channel 4, so no interference to channel 4. Yes, the channel 2 modulator will trash the 6 meter ham band, but this is a closed cable system, so that shouldn't be a problem, as nothing to very little should leak out over the air.

The UHF converter is not being used.