canadian_atc or anyone else:
A few weeks ago, sitting fat dumb and happy in Maastricht's airspace, ATC asked one of the flights to give him a radio check over another frequency.
When he did, we still heard both ATC and the other aircraft on the original frequency. The non-flying onboard my aircraft notified ATC that they had not actually changed frequencies and Maastricht said something about "frequency patching" or "doubling" or something like that where ATC can broadcast on multiple frequencies and the responding aircraft can be heard over multiple frequencies.
Is this common?
A few weeks ago, sitting fat dumb and happy in Maastricht's airspace, ATC asked one of the flights to give him a radio check over another frequency.
When he did, we still heard both ATC and the other aircraft on the original frequency. The non-flying onboard my aircraft notified ATC that they had not actually changed frequencies and Maastricht said something about "frequency patching" or "doubling" or something like that where ATC can broadcast on multiple frequencies and the responding aircraft can be heard over multiple frequencies.
Is this common?