Screen size
Diagonal display size of car radio. The larger the screen, the larger the image on it and the better, usually, information is perceived; in addition, large size is important if
the screen is touch-sensitive (see Touch screen). On the other hand, in car radios, the display size is limited by mounting dimensions and almost never exceeds seven inches.
Number of fixed settings
The number of fixed settings (presets) provided in the car radio equalizer.
The presence of such settings can greatly simplify the adjustment: choosing the right preset is easier than manually adjusting each EQ band. At the same time, presets are often selected by the manufacturer for certain genres of music and have the appropriate names — "Rock", "Pop", "Jazz", etc.; this simplifies the task even more. And the more fixed settings in the device, the wider the choice of the user. In some radio tape recorders, in addition to pre-flashed ones, user presets are also provided — they can be programmed in advance and turned on in the same way as the preset ones.
Video output (composite)
The number of
composite video outputs provided in the design of the radio.
"Full size" composite interface includes 3 RCA ("tulip") sockets - one for video signal and one each for left and right stereo channels. However, other outputs are used in radios for transmitting an audio signal, so in this case we are talking only about a video output - usually it has a characteristic yellow color. The video signal via the composite interface is transmitted in analog format, its quality is average, resistance to interference is relatively low. At the same time, for connecting most car screens - for example, monitors built into the backs of the front seats - this is more than enough. And several composite outputs allow you to simultaneously connect the appropriate number of screens without the use of additional equipment (splitters).
