Yotsie:Our through water system is much clearer than our hardwired system and we've had less problems with it.
We don't, that's why our through water system is primary. We only use the hardwire system when the incident calls for it.
Your through water is clearer than your hardwire? That's interesting, but not in my experience. May I ask what you're using? It surprises me sometimes how well the through water works at times, but, it's hard to beat sending a signal through conductors instead of the electronics translating voice to signal, sending it through the transmission medium (water) by ultrasound and then the electronics on the other end translating this signal back into audible communications. Either way, communications are an invaluable tool for public safety diving and any other work required underwater.