https://www.technik-fuer-angler.de/H...A-SI-GPS-G2/en
MEGA Side Imaging PLUS
See the world as never before with crystal clear views up to 61 meters on both sides of your boat. With 20% more detail than with MEGA Side Imaging Sonar you can unlock more fish and structure.
Frequency: 455 kHz, 800 kHz, MEGA imaging +
Range: 455 kHz: 404 - 505 kHz, 244 m (800 ft) per side
800 kHz: 780 - 840 kHz, 76 m (76 ft) per side
MEGA Imaging +: 1050 - 1175 kHz, 122 m (400 ft) per side
cover
455 kHz: (2) 86 ° @ -10 dB (180 ° total coverage)
800 kHz: (2) 55º @ -10 dB (130º total coverage)
MEGA Imaging +: (2) 86º @ -10 dB (180º total coverage)