New Zealand TV Audio Frequencies

by ZL2TAR as provided by ZL2IP

ZL Channel 1 sound frequencies.

Hikurangi (Far North) 50.760000
TeAroha (Waikato) 50.739200
Whakapunaki (Gisborne) 50.760000
Kaukau (Wellington) 50.749600
Mt Studholme (Sth Canterbury) 50.739200
Hedgehope (Southland) 50.749600

The above frequencies include a -400Hz offset to minimise the visibility of the vision-chroma-sound 3rd order intermodulation beat generated inside domestic receivers.
He quotes the frequency accuracy of non-precision offsets as better than 500Hz, and that of precision offsets less than .001Hz, but does not identify which transmitters are which.

This was from an article by Doug Ingham, ZL2TAR who is a TV transmitter engineer with BCL limited, which has design and management responsibilities for most of the ZL TV network, so I guess it is correct. The article date was March 1999.

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Ted Barnes ZL2IP