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Author Topic: New Fishfinder GPS  (Read 1638 times)

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New Fishfinder GPS
« on: November 05, 2010, 10:44:28 AM »

I'm going to make the leap shortly and get one of the newer fishfinder/GPS units. Still a little torn between which one and currently pouring over the posts to help me decide. The question I have that I haven't seen posted yet is about the sonar reading at speeds over 20 mph.

What should I expect to be able to see when moving at higher speeds? Will the units show contour, structure and fish while traveling at 15/20 mph? My current model (Navman 4150) doesn't really show a lot of anything other than depth. Just want to know what to expect.



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Re: New Fishfinder GPS
« Reply #1 on: November 05, 2010, 11:13:16 AM »

My HB setup with shoot-thru transducer for on-plane only gives me depth but no detail. I assumed that I didn't get it set right in the epoxy but maybe that's the way it always is (?). I lose graph detail at 20-25mph. Others who know more about this will probably reply, but that's been my experience.
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Re: New Fishfinder GPS
« Reply #2 on: November 05, 2010, 12:29:03 PM »

i still need to get a high speed transducer for my HB 798.  Anytime i get over 15 mph i lose everything and the depth usually goes into the thousands.  Luckily for me i only fish kent lake and have learned the hazards to avoid over the years, except for the boat ramp when they draw the lake down :o

McCarter himself :-\'


Re: New Fishfinder GPS
« Reply #3 on: November 06, 2010, 07:32:15 PM »

u go 15mph on kent!? u r breaking the law sir


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Re: New Fishfinder GPS
« Reply #4 on: November 07, 2010, 06:57:40 AM »

I have the 898 SI unit on my dash, and the 788c on the bow.  I have them interlinked together.  I also have the high speed transducer epoxied into the bottom & connected to the 898 via a Y cable. 

The high speed set up for the 898 works perfectly.  It is everything I wanted when I decided to go this route.  With the Y cable the electronics just do everything automatically.  No switches to throw, no settings to make, .... nothing.  Just enjoy it.

There is however, one improvement that I'd make if I were  a Humminbird engineer. 

The chart speed doesn't automatically adjust itself to which transducer I'm using.  So if I set it at say 5 when I'm using the SI, the it will continue to be at 5 when it switches over to the other transducer at higher speeds.   I'd like to be able to set it to run faster at high speeds. 
So much water.  So many lures.  So little time.

Rick Fike
Vice president & Program Director Downriver Bass Association 734.649.9390
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