Airmar no longer manufactures this transducer.

Airmar’s R399 differs from the R299, because it operates at lower frequencies between 25 kHz to 45 kHz and 130 kHz to 210 kHz—seeing even deeper in the water. Adjusting the frequency allows you to change the R399's beamwidth and depth capabilities. For example, if you are bottom fishing in 61 m (200') of water, the narrow high-frequency beam will display extreme bottom detail and fish holding tight to structure. If you are tuna or marlin fishing in deep blue water, the wider, low-frequency beam will not only give deep-water bottom detail, but more importantly show you what is around your vessel—including bait which may attract game fish. Widen the band and increase the catch with the R399.

Because the R399 has a bandwidth that covers a continuous frequency spectrum, next generation fishfinders can be made “tunable”, so fishermen can “dial-in” the best frequency for the target-fish species or conditions.

Manufacturer Part Numbers

Furuno NC—R399ID-IHN——Airmar—41-335-1-01

Raymarine—A102117——Airmar—41-313-1-01