Q & A with Craig Cushman from Airmar Technology 

Finally, a simple yet informative explination on the types of Chirp through hull transducer. Only thing that's lacking is explination on the type of device that uses these frequencies, location installation, and material type suited for the boat.

Hi. What frequency is best recommended for snapper? Cameron

hi, beautiful video.. I wanted to ask you for advice, I recently bought a lowrence hds live and I am and I don't know which type of probe to use exclusively for live trolling from 40 to 90 meters, whether imaging 3-1 or tm 165 hw, what would you recommend? .. thank you

Hi Craig. I purchased a lowrance HDS Live with a 3 in 1 transducer I want to add on a Airmar TM 260 , 1 kw transducer to find fish shows on the bottom of the reef in water depth between 80 and 150 metres. Is this the correct transducer for me. Kind Regards Bob.