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Small battery-operated portable televisions, while valuable in time of disaster, are generally poorly suited to digital conversion. While at least one CECB (Winegard's RCDT09A) is operable from an external battery pack, [25] the combination of television, converter, external antenna, and power supply limits portability. [26]
The target engagement radar is a passive electronically scanned array antenna of the reflection type mounted on the front of the fire control system with a 60 degree field of view. [46] Much like its land based sibling, the target engagement radar can track and guide eight missiles on up to four targets at once and is effective to a range of 1. ...
Elements of a pocket television CRT: (1) Recessed Screen, (2) Electron Beam, (3) Electron Gun. These devices often have stereo 1⁄8 inch (3.5 mm) phono plugs for composite video-analog mono audio relay to serve them as composite monitors; also, some models have mono 3.5 mm jacks for the broadcast signal that is usually relayed via F connector or Belling-Lee connector on standard television ...
A 'whip' antenna at the side of a Casio portable TV. Some portable televisions use a whip antenna. [6] This consists of a single telescoping rod about a meter (3.3 feet) long attached to the television, which can be retracted when not in use. It functions as a quarter-wave monopole antenna.
Portable radios may have an arrangement for powering from an outlet, conserving the batteries when an outlet is available. Portable "emergency" radios may be solar and/or hand crank powered. [7] Boom box - a portable battery-powered high fidelity stereo sound system in the form of a box with a handle, which became popular during the mid-1970s.
To activate the TV, the viewer had to insert coins into a slot, which would grant them timed access to local TV stations. Initially, these coin-operated TVs were extremely profitable since America was still in the early stages of developing its national TV addiction, and people were willing to pay for the novelty of watching TV outside their homes.