We also mounted the P79 next to the old B&G transducer. Easy to install, works fine and gives good readings, but the sound that it makes is annoying, the „tock – tock - tock …“ encourages me to remove the cable from the Plotter (cannot just be switched off). I will try to put some foam around it to make it more silent, but if that does not help I think I would not install it again.
