How much longer will analog cable hang on

[radiotvnut]

That's the one.

I also remember seeing some cable boxes that had a single mechanical knob tuner, similar to the single knob varactor tuners in some TV's.

IIRC, that Jerrold box had dirty switches in it when I got it. It worked OK after I cleaned; but, of course, it's now only good for a paperweight, since everything above channel 12 is digital.