My first space command!

[Jeffhs]

Originally Posted by josephdaniel

here are the pics.

I noticed a three-pin connector on the same panel with the Redi-Plug which, as radiotvnut mentioned, is just a plastic knockout plug covering a hole in which other accessories (such as security alarm sensors and the like, as radiotvnut also mentioned) were installed. The 3-pin socket is labeled "antenna switch accessory" -- I wonder what that is connected to and what its function was. Obviously it is for some kind of antenna switch, but I wonder if this series of Zenith TVs actually had antenna-switching systems (operated with the remote or by way of a switch on the front of the set) or if this is just a dummy socket not presently connected to anything, but could be if such an accessory became available some time after the set was sold.

Many Zenith TVs of the 1980s, especially those designed for commercial use (hotels/motels, schools, hospitals, et al), had such plugs and sockets for accessory devices such as in-house cable tuning adapters, alarms, etc. LG's website (www.lg.com or www.zenith.com) does have a section on their commercial products that states such TVs are set up for in-house cable tuning, in-house information channels, programmable (from a central location) channel lockout, and a host of other features not found in televisions designed for use in private homes. Some of these sets could even be remotely (from a central location) programmed so that the volume could not be increased beyond a certain level; this feature would most likely be found on sets installed in motels and hospitals, so the sound would not disturb others -- even if the set's volume control was turned to maximum.