Blog

otadtv.com Digital Television's

Most television's manufactured since March 2007 have a built-in digital tuner (ATSC 1.0) for receiving over-the-air High Definition (HD) broadcast. In 2020 select televisions became available that could also receive ATSC 3.0 Ultra High Definition (4k UHD) broadcast. Most digital TV's can also receive analog signals (NTSC) for displaying older recordings and games.

Some television digital tuners do not use a low noise receiver and may not get weaker signals. One reason not to use a low noise receiver is to cut cost. Another reason is satellite and cable TV boxes do not need a TV with a low noise amp. A few television models are video monitors only, and do not have a built-in digital tuner. Television monitors get raw video from a cable or satellite box, or a set top digital TV tuner).

ATSC -- Advanced Television System Committee
NTSC -- National Television System Committee

HDTv Set HDTv Set
Television Standard
Analog NTSC
Digital ATSC 1.0
4k UHD ATSC 1.0 / 3.0
Digital Television
  • Resolutions
    • SD - Standard Definition
    • HD - High Definition
    • 4k UHD - Ultra High Definition (ATSC 3.0)
  • Multi-Channel Audio
    • Stereo / Mono, Surround Sound
    • Additional Languages
  • Information
    • Channel / Network / Program Guide
    • Resolution / Audio type
    • Signal Strength
    • Closed Caption

Next Gen, 4k, UHD, and ATSC 3.0, are often used interchangeability. The technology allows an Internet connection to blend additional content in real time.

Digital Tuners
Television monitors, computers, tablets, and smart phones can receive TV broadcast using an external Digital Tuner. The coax cable from an inside or outside antenna plugs into the DTv tuner, the tuner connects, usually with an Ethernet cable or WiFi, to your computer or network router / switch. You may need to download a media/TV app for your devices. Some DTv tuners have multiple receivers for receiving multiple TV channels simultaneously.

DIGITAL TV TUNERS
from Amazon®

Digital to Analog Converter
Analog televisions require a Digital to Analog Converter Box, sometimes just called a Digital Converter, to receive OTA DTv. Most converters are also recorders. The coax cable from the antenna plugs into the converter box, the box is then connected with another coax cable to the televisions's Antenna Input. A coax to twin-lead adapter is needed for older TV's with a twin-lead input connection. Some converters can also connect to the television with HDMI, USB, video, VGA, DVI, or YPbPr cable sets for better picture and audio quality.

DIGITAL TO ANALOG TV CONVERTERS
from Amazon®

ATSC Website -- list of downloadable documents; ATSC 1.0 Standards | ATSC 3.0 Standards

Sponsored links

Aspect Ratio
Width : Height

Display Aspect Ratios
16:9
Wide Screen
UHD, HD, SD
4:3
Analog TV ratio
SD
1:1
Square
HD, SD

Resolutions

4k UHD
2160p
HD
720p
1080i
1080p
SD
480p
480i
The number is display height pixels per inch.
p = Progressive - picture lines displayed one after the other.
i = Interlaced - odd picture lines displayed then even lines.

Specifications

Definition Resolution
W x H (PPI)
Aspect
Ratio
Frame
Rate
Ultra High
Definition
(4k UHD)
2160p 3840 x 2160 16:9 24 fps
30 fps
60 fps
120 fps
High
Definition
(HDTV)
1080p 1920 x 1080 16:9
1:1
24 fps
30 fps
1080i 30 fps
720p 1280 x 720 24 fps
30 fps
60 fps
Standard
Definition
(SDTV)
480p 704 x 480 16:9
4:3
24 fps
30 fps
60 fps
640 x 480 4:3
1:1
480i 704 x 480 16:9
4:3
30 fps
640 x 480 4:3
1:1

The 4k Digital Cinema Standard has slightly higher resolution than 4k UHD TV.

Standard Resolution
4k Digital Cinema 4096 x 2160
4k UHD (TV) 3840 x 2160
W
H
PPI
fps
=
=
=
=
width
height
pixels per inch
frames per second

Most Hollywood movies run at 24 fps. The old analog TV system ran at 30 fps with an interlaced (i) picture and aspect ratio of 4:3.

otadtv.com OTA DTv
Digital Television's