If you have speakup running, is it possible to play other sounds via the same audio output? Is full-duplex recording possible where the sound card output is speakup but one is recording audio from some outside source? Most P.C. sound cards support mic and line inputs and one can access /dev/dsp for recording at the same time that speakup is talking. I have run across a few sound cards with analog loopback settings in amixer. I have been able to enable that feature and capture speakup's audio in the recording which is useful if you are scanning radio frequencies and want to know which frequencies are active while one is away. If you can get the receiver to output its frequency when the squelch opens, you will hear the readout mixed in with the audio. It is definitely not something you want to do all the time, but it comes in handy on occasion. Mike Ray writes: > I'm a ham too, G4XBF.
