Oceanographic transponder ATT-400EL

underwater acoustic

This underwater acoustic transponder is small and easy to deploy for up to 18 months in depths of 1000m. When interrogated by the STI-350, DTI-300 or VADR series acoustic receivers, the ATT-400 provides range and bearing up to 750 meters away. The ATT-400 can also be programmed to operate as a free-running pinger. This transponder offers the same features as the ATT-400 but can be deployed for up to 18 months. RECEIVE FREQUENCY 26kHz USER SELECTABLE TRANS FREQUENCY 27,28,29,30,31,32,33,34kHz ACOUSTIC OUTPUT 180dB ACOUSTIC SIGNAL Coded System Range TRANSPONDER MODE 750 meters PINGER MODE 1800 meters ACTIVATION Battery Installation BATTERY (6) 9 Volt Batteries, Alkaline OPERATIONAL LIFE 18 months in transponder mode DEPTH RATING 3280ft (1000m) HOUSING MATERIAL Aluminum Housing Dimensions LENGTH 13.0in (33.5cm) DIAMETER 2.25in (5.7cm) WEIGHT 2.0lbs (907g)