p1fel
BA fit station box in G-CPE* series, no marker audio!
It does - but I’m not surprised you thought it didn’t.
I think this is your Audio Control Panel, below.
I’m told that you can turn off the ILS/MLS received audio so that only the MB will be present. Apparently you do this by repeatedly pushing the ILS/MLS Volume Control switch until the ILS/MLS LEDs (L-C-R) are off. You then have Marker Volume.
Wrong, See below.
I don't think I’ve ever seen a single switch on any aircraft that doesn’t tell you what it’s for. I can almost picture what happened here. The guys who designed it thought ‘MLS’. We won’t need Marker; we have to wire it in - but won’t show it.
PS. Months Later - The correct story from the manufacturer - who also provided the incorrect story above!
The Marker Audio is on whenever any of the three ILS/MLS channels are selected. Within the ACP. The Marker headphone output level is factory set. The ILS/MLS selection and audio level is controlled via a dedicated front panel switch/volume control.
