[Jeffhs]

It seems very unusual to me that this TV does not have a button or a switch on the front panel to activate the power tuning. Most TVs with this feature will have either a button or a rocker bar which would activate the motor drive; the rocker bar would activate the motor for either channel up or channel down, while the button arrangement almost always operates the tuner only in one direction, usually clockwise. (Zenith's SC100 remote TVs have this one-way remote setup, with the added feature of automatic shutoff of the TV when the tuner reaches a certain user-selected channel; this feature had to be set up when the set was initially installed.)

If the tuner has been set to skip unused channels, stopping only on active channels in the user's area, it will stop on only those selected channels, skipping the others. For example, if your area has channels 2, 4, 5, 7, 9, 11 and 13, the tuner can be programmed to stop only on those channels, skipping past channels 3, 6, 10 and 12. If the tuner has not been set up this way, it will stop on every channel from 2 to 13, stopping and shutting the TV off when the tuner reaches the channel (if any) which has been set up to automatically shut off the set.

It would seem to me as well that the "UHF" position on the VHF tuner in Zenith TVs without the factory-installed UHF tuner could be programmed to shut off the set when the VHF tuner reached the UHF position; in fact, many VHF-only Zenith TVs (in areas with no local UHF TV stations, of course) were probably set up this way by default, especially sets made for use in hotels or motels.


This would not be practical, let alone usable, however, if the TV had a factory-installed UHF tuner, since every time the tuner reached the UHF position, the TV would immediately shut off. I would think, however, if a Zenith TV had the UHF tuner and was set by default to shut off when the VHF tuner stopped on the UHF position, this feature could be disabled so that the set would remain on when the tuner reached the latter position.