Two kartoshechny DF repeater DR-309-2B is used as a repeater information about the course of the vessel, coming from the gyrocompass, girokursoukazateley or others. navigation systems, digital interface RS232/422 standard NMEA (IEC 61162). repeater when used in conjunction with an optical direction finder (eg, PGK-2) allows you to define complex bearings of terrestrial objects or celestial objects visible from the ship.

• Dimensions 285 x 238 x 210 mm 
• Protection class IP 67 
• Storage temperature -55. . +70 ° C. 
• Operating temperature -20. . +55 ° C 
• Weight ~ 17 kg 

• Supply voltage 10. .36 VDC 
• Power consumption not exceeding 20 W