If the Aura is recording two instances of the same programme you may find the the Auto Channel Search has tuned the Aura into two transmitters serving your area. To check for duplicate channels have a look in the EPG and go up to the higher channel numbers, duplicate channels are usually found in the 800's. If you find you have duplicate channels then Manual Channel Search should be carried out so you can only tune in to the nearest/ best line of sight transmitter. Instructions can be given if you want.
"cannot change channel while a recording is in progress"
You will see this message when the Aura is using all three tuners and you have tried to change to a channel that is being broadcast on a different multiplex (mux). Channels are broadcast through usually 5 different muxes, each mux delivers several channels and radio broadcasts simultaneously.
For example if you are recording BBC1HD, Dave, and Drama (these are all broadcast on different muxes)at the same time you cannot switch to another channel that is being broadcast on another mux as that would require a fourth tuner.
Similarly if the Aura is recording two programmes broadcast on different muxes and then a third recording is due to start broadcast on a third mux and you are watching a live programme on a different mux from the three recording the Aura will automatically switch over to another channel being broadcast on one of the three muxes that recordings are taking place.
If you know which transmitter you are using and know which mux numbers it broadcasts and therefore the channels each mux is broadcasting you can then work out when setting up recordings that you don't run in to conflicts when trying to watch live.
To avoid some conflicts you can try recording the +1. version of the channel if available as these are often broadcast on a different mux.
For example Drama and Drama +1.
