Australian Television

Analogue Television Broadcast Standards of Australia

Television Sets In Australia=8 Million Colour-PAL System-B

Channel Width: 7MHz vestigal sideband transmission

Vision Carrier: 1.25MHz above lower frequency edge of channel

Primary Sound Carrier: 5.5 MHz above vision carrier

Secondary Sound Carrier: 242.1875kHz above primary sound carrier

Vision Modulation: Negative amplitude modulation (am)

Lines Per Picture: 625 lines, interlaced 2:1

Line Frequency: 15625kHz

Field Frequency: 50Hz

Colour Sub-Carrier Frequency: 4.43361875MHz

Aspect Ratio: 4.3

Horizontal Sync Pulse Amplitude: 100 per cent carrier amplitude

Front Porch: 1.3-1.8us

Back Porch: =Line blanking interval - (front porch + sync pulse)

Line Blanking Interval: 11.8-12.3us

Black and Blanking Level: 76 per cent of peak carrier level

White Level: 20 per cent of peak carrier level

Pre-Equalisation Pulse Interval: 2.5H (H=Line period, 64us)

Post-Equalisation Pulse Interval: 2.5H

Field Sync Pulse Interval: 2.5H

Field Blanking Interval: 25H + 12us

Ratio Of Peak Vision to Peak Sound Carrier:

Single Sound Carrier Systems-Mono: 10db

Dual Sound Carrier Systems-Stereo 13db [Ch1], 20db [Ch2]

Sound Modulation: Frequency Modulation-FM (WFM mode capable scanner needed to receive sound carriers on your scanner)

Sound Deviation: +/-50kHz

Audio Pre-Emphasis: 50us

Please send further Australian and international TV technical data to my email address, it would be greatly appreciated.

ageelan@bigpond.com

A VicNews Publication ©Copyright 2003

Information correct as at Tuesday, January 14, 2003.

NOTES:

1. Currently, although via cables and satellite, pay TV is converted by your set-top box in the same way as free-to-air analogue tv is sent, otherwise, if it was a different mode (even a different PAL system) you would not be able to watch PAY TV
2. Actual Frequencies of TV Broadcasters and further TV information can be found in the TV section of this website.