Aloka UST-979-3.5 Convex Array Ultrasound Transducer Probe 3.5 MHzAloka UST 979 3. 5 Convex Array Ultrasound Transducer Probe (3. 5 MHz) Premium convex array ultrasound probe designed by Aloka for versatile imaging applications including abdominal, obstetric gynecological, general, and renal scanning. Compact, reliable, and compatible with a range of Aloka ultrasound systems. Key Specifications Model: UST 979 3. 5 Type: Convex array transducer Frequency Range: 3. 0 MHz to 6. 0 MHz, primary operation at 3. 5 MHz