Thread: 999ci HD SI or Helix 9 SI

Originally Posted by OrangeAgent

So there are no issues with interference when using the same frequency for both 2d and imaging from the same transducer, or would you use 2d or DI only when using 455 for conventional sonar?

Sorry if I am hijacking your thread slabbo.

I've read no reports of interference between the 455kHz 2d frequency and the 455kHz DI frequency ...

And these DI units have been on the market since early 2011 ...

Rickie