[QuadList] Digital Audio on Quad

[Ian Mackenzie]

I just came across the discussion about digital audio on Quad.

In Australia it was necessary to have Stereo audio on ACR25 machines for
commercial replay to air.

This was accomplished by using a unit called "VIMCAS" made by IRT
electronics in Sydney and put a digital audio track in vertical
blanking.

The unit gave a stereo pair and was common in the networks here.

 

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