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Mode Analog TV

adswill edited this page Oct 17, 2026 · 2 revisions

Analogue television (PAL, SECAM, NTSC).

Group TV
Default frequency 600 MHz
Default sample rate 10 Msps
In the mode list PAL, SECAM, NTSC

Step-by-step: Tutorial-Analog-TV

What Analog TV is

Analogue television (PAL, SECAM, NTSC and their regional variants) is switched off in many countries but still exists on cable, in test equipment and in vintage setups.

Frequencies and settings

PAL, SECAM, NTSC; systems B/G, I, D/K, M, N, H, K', positive-modulation A (405 lines), C, E (819 lines), L, L'; NBTV and mechanical TV.

Setting Value
Start frequency 600 MHz
Tuning range of the mode table 45 to 6000 MHz
Sample rate asked 10 Msps
Lowest working rate 8 Msps
Channel width 8 MHz

OnAir takes any frequency you type; the numbers above are the mode's starting point and the range its table describes. In the app the shortcut label is PAL, SECAM, NTSC.

What OnAir shows

Picture and sound.

Tips and caveats

  • Checked with generated signals and impairments; recordings of real signals welcome.
  • Which radio: No: wide TV channels need a radio that samples faster than an RTL-SDR, which reaches about 2.4 Msps. See Supported radios.
  • Try it without a radio: most modes include a built-in synthetic test signal, so you can open the screen and try the controls first.
  • Receiving and the law: Receiving free-to-air broadcasts is legal in most countries. OnAir cannot decode encrypted or scrambled services, and does not try to. See Legal.

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