Ticking is normal on all sonar. That is the pulse signal sent out to "bounce" of & it reads the return. Thats how it works.
Yes, it is audible to human ears underwater also. Years ago we (Firefighters scuba club) dove a lot at Lake Travis. We could get back in under our floating dock (Christmas trees hanging 10' down on ropes. Bass & crappie loved them)) at the end of a bluff wall. 75' depth under our dock. We watched many a boat fish by & heard every ping. Watched MANY bass swim behind, engulf a crankbait/jig/worm/ etc & spit it without fisherman ever detecting it. Yes some were caught, but we actually observed only anout 50% that bit were even known by the fisherman. Amazing.
Affecting fish: most times no effects, but some days yes, they would actually go down & away as a boat approached & come back after boat was past about 100'. Whether it was graph impulses or not, causing it, ??? Who knows? I believe it was at least part of the time. I think water clarity plays a HUGE role in whether fish react to it or not.
My conclusion: Normal, Yes, Sometimes. Just an opinion & you KNOW what they say about those.
Edited by Curtbass (02/26/18 10:22 AM)
92' ChampioN 201DCR Elite