Originally Posted by
triadic
No different to now approaching a CTAF with a dedicated frequency I suggest
I suggest it would be different. MULTICOM 126.7 will have far more traffic on it than a local CTAF, and inbound to an aerodrome it will present an additional frequency to listen to & broadcast on from the current situation.
That would mean if you are cruising at 7500' 80 nm SE of Charlieville and monitoring the "correct " frequency you would not receive a flight information / hazard alert service but if you broke the rules and monitored the nearest ATC outlet at St George you would.
There are examples of limited ATC VHF coverage, however they tend to be in areas not carrying a lot of traffic, or aerodromes, or bad WX to present a problem.
And in the example you cite - and also relevant to no lines and instead "biscuit" scenario - the nearest VHF outlet may not be for the ATC sector responsible for the airspace in which you are flying, in which case you may not monitor FIS broadcasts etc. relevant to you.