TVW-7/SAS-10 - "We're With You" ident (1983) 

Try a 3-way mix with NBN-3 Newcastle from the same year! It's clear from a few places in the vocal that the recording is identical across all three -- as you said, it's just the channel number/names differ -- "channel 7's team / channel 10's team / NBN's team" and "channel 7 we're with you / channel ten we're with you / NBN we're with you". I've always sworn that I could hear "seven" under the SAS version's vocals too! Listen carefully to it and see if you can hear it too :)

NBN Televsion Newcastle used the same jingle

Where did you find TV-W 7’s We’re With You??? Link to the TVW-7 version?