PAL Broadcast

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PAL Broadcast
PAL.jpg
Frequencies 47 MHz,862 MHz
Frequency Range 47 MHz - 862 MHz
Mode RAW
Modulation QAM,VSB,FM
ACF
Bandwidth 6 MHz,7 MHz,8 MHz
Location Worldwide
Short Description Phase Alternating Line (PAL) Analogue Television Broadcast. Now phased out in most of the world.
I/Q Raw Recording
Audio Sample

Phase Alternating Line (PAL) Analogue Television Broadcast. Now phased out in most of the world. Replaced by DVB-T. Used Quadrature Amplitude Modulation for transmitting video. Uses CCIRComité Consultatif International pour la Radio (Predecessor of the ITU-R) System B.

Has a Field Rate of 50 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz)., 625 lines per frame, and a Gamma of 2.8.


Format[edit]

PAL format.png

Luma: Amplitude Modulation. The amplitude denotes the brightness on each scan line.

Chroma: Used an analog QAMQuadrature Amplitude Modulation system, where the amplitude denoted the saturation of color, and the phase denoted the hue. This uses the UV (YUV) color system.

Audio: Standard FMFrequency Modulation modulated audio.

In addition, there are multiple systems of PAL that are employed.

PAL broadcast systems (from Wikipedia)
PAL B PAL G, H PAL I PAL D/K PAL M PAL N
Transmission band VHFVery High Frequency (30-300 MHz) UHFUltra High Frequency (300-3000 MHz) UHFUltra High Frequency (300-3000 MHz)/VHFVery High Frequency (30-300 MHz)* VHFVery High Frequency (30-300 MHz)/UHFUltra High Frequency (300-3000 MHz) VHFVery High Frequency (30-300 MHz)/UHFUltra High Frequency (300-3000 MHz) VHFVery High Frequency (30-300 MHz)/UHFUltra High Frequency (300-3000 MHz)
Fields 50 50 50 50 60 50
Lines 625 625 625 625 525 625
Active lines 576 576 576 576 480 576
Channel bandwidth MHzMegaHertz (MHz) 10^6 Hz MHzMegaHertz (MHz) 10^6 Hz MHzMegaHertz (MHz) 10^6 Hz MHzMegaHertz (MHz) 10^6 Hz MHzMegaHertz (MHz) 10^6 Hz MHzMegaHertz (MHz) 10^6 Hz
Video bandwidth 5.0 MHzMegaHertz (MHz) 10^6 Hz 5.0 MHzMegaHertz (MHz) 10^6 Hz 5.5 MHzMegaHertz (MHz) 10^6 Hz 6.0 MHzMegaHertz (MHz) 10^6 Hz 4.2 MHzMegaHertz (MHz) 10^6 Hz 4.2 MHzMegaHertz (MHz) 10^6 Hz
Colour subcarrier 4.43361875 MHzMegaHertz (MHz) 10^6 Hz 4.43361875 MHzMegaHertz (MHz) 10^6 Hz 4.43361875 MHzMegaHertz (MHz) 10^6 Hz 4.43361875 MHzMegaHertz (MHz) 10^6 Hz 3.575611 MHzMegaHertz (MHz) 10^6 Hz 3.58205625 MHzMegaHertz (MHz) 10^6 Hz
Vision/Sound carrier spacing 5.5 MHzMegaHertz (MHz) 10^6 Hz 5.5 MHzMegaHertz (MHz) 10^6 Hz 6.0 MHzMegaHertz (MHz) 10^6 Hz 6.5 MHzMegaHertz (MHz) 10^6 Hz 4.5 MHzMegaHertz (MHz) 10^6 Hz 4.5 MHzMegaHertz (MHz) 10^6 Hz

Samples[edit]

Nanjing 南京 PAL D
Test Channel
Video Sample
(no color demod)
NJTV.gif
IQQuadrature signals form the basis of complex RF signal modulation and demodulation, both in hardware and in software, as well as in complex signal analysis. Sample
and Waterfall

Download IQ File Sample

Ss (2017-01-28 at 11.54.37).png

Frequencies[edit]

All over the VHFVery High Frequency (30-300 MHz) and UHFUltra High Frequency (300-3000 MHz) bands.

Decoding Software[edit]

Hobby Level Software

Video Examples[edit]

Additional Links[edit]

Additional Images[edit]