Our 1st colour tv (circa 1977) had 6 push buttons (no remote control)
0 (ATV, then SBS)
2 (ABV)
7 (HSV)
9 (GTV)
10 (GLV, then ATV)
Spare
Then when SBS switched off Channel 0 that spare button became Channel 28, and eventually the 0 button was used as the VCR channel.
When i got my first portable TV in the early 90s it had 16 presets with a remote control, and because the TV moved between Melbourne and Goulburn Valley, i think it was:
1 SBS28
2 ABV2
3 ABGV40 ABC Shepparton
4 AMV43 Prime Shepparton
5 GLV46 SCN Shepparton
6 VTV6 VIC/WIN Shepparton
7 HSV7
8 BCV8 SCN Bendigo
9 GTV9
10 ATV10
11 can’t remember. Maybe Channel 31 when that arrived.
12,13,14,15
16 VCR