The new Northstar chartplotter arrived today, reading through the manual I see that it uses a 50/200 HZ sounder.
Unfortunately my fishfinder (garmin 340C) uses the same frequencies. It seems to me that they're likely to interfere with each other, if they will I'll just disable the chartplotter as it would be redundant info anyway.
However the plotter is twice the power output of of finder (1000W RMS vs 500W RMS)
I want to keep the fishfinder on while I'm zipping along to see any fish schools in my path, the plotters screen will have the moving GPS and radar map displayed, along with the info from the motor (GPH, MPG, etc).
I'd be nice to port the plotters sounder/fishfinder output to the fishfinders or a separate screen, but I dont think thats really possible..