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Switching between COM1 & COM2 radios on 747 QOS

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Hi, sorry if this has been asked before. I ran a search but came up with nothing helpful.How can one switch between the COM1 and COM2 radio frequencies, or monitor both frequencies, for that matter? I can't find the switches anywhere.Any help would be appreciated.Thanks, Ulysese

Hi,see attached image.I think dual listening is not available.Happy ney year,Rapha

You can listen on both coms by clicking on both volume control knobs so they are both lit.C McCarthy

>Hi,>see attached image.>I think dual listening is not available.>Happy ney year,>Rapha

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