Thread: talked to a HB engineer today

Originally Posted by TapOut64

I use it the same way. My only questin is, when zoomed all the way in how many feet is it per square?

It looks like it is 40' or 50'. I am estimating off the length of the 20' scale marker.

You know, I've been wondering about that, if the super-close zoom
ranges we've been given are exaggerating the herky-jerky deal.

I know my old Lowrance, about 528 feet square is as close as it'll zoom in -
I know some of us have a problem with the redraw interval, but not wanting
to get into all that. It sounds reasonable to me that zoomed way in,
at a given speed, the cursor is gonna jump further each time it updates.

Originally Posted by J White

You know, I've been wondering about that, if the super-close zoom
ranges we've been given are exaggerating the herky-jerky deal.

I know my old Lowrance, about 528 feet square is as close as it'll zoom in -
I know some of us have a problem with the redraw interval, but not wanting
to get into all that. It sounds reasonable to me that zoomed way in,
at a given speed, the cursor is gonna jump further each time it updates.

When I'm close enough to my object of interest to be zoomed in all the way, I'm moving very slow. The display really doesn't jump that much. It is a little jerky at high zoom when moving faster due to the slow update interval.

I will try not using the waypoint method and see if I can get any closer. Does anyone else use a GPS that has the arrow that guides you and lets you know if your off track like my Garmin 378. I think I will post a picture of my guidance screen on my Garmin 378.

Originally Posted by fishordie

I will try not using the waypoint method and see if I can get any closer. Does anyone else use a GPS that has the arrow that guides you and lets you know if your off track like my Garmin 378. I think I will post a picture of my guidance screen on my Garmin 378.

This is a screen that I use for precise guidance to my spot. The arrow doesn't jump around like crazy and if gives the number of feet to spot.
Does the Hummingbird 797 have a simple screen like this? The boat and arrow isn't cutting it for me and will tell me I'm at my spot while the Garmin will show I have another 20 feet to go before being over my spot.
Any help would be appreciated. :rolleyes:

I have something similar on my 27C for navigating to a waypoint. I tried using it once but didn't like it. With that poor experience in mind, I have never tried using the 997's navigation function which is where folks are having issues.

By navigation function, I take it you mean some of the stuff like
"go to" a waypoint? I haven't tried using any of that stuff, just steering
towards a point on the screen. Have went back to my old ways,
I always keep it set North up - if I want to go to something at say, 3 o'clock
on the screen, I look at the shore and pick out something to the East, and
go that way, glancing back and forth at the screen watching my progress
towards it. I completely ignore which way the little boat is pointing, and I've
turned off the course projection line. Works pretty fair this way, as long as
I stay slow enough to stay behind the lag time. Again, I'm way tired of the
drama, so I'm beyond argueing the "why" of this - but I did
take some advice off the Yahoo SI group and set my unit to dd.ddddd and
it does seem to react a little more smoothly for me this way.
I'd really like to see them add some more Lowrance-like features like seperate
icons, and the ability to delete them by type... or for the unit to stay defaulted to, for example, the fish symbol instead of always popping the blue dot and having to edit it - but I don't like what happens
when I try to talk to these folks, so I'm "out" on trying to work with them.
I'll use what they put out, or not, and when/if something better comes
along, I'm all over it

dd.ddddd,
I remember the discussion. My reasoning is that all or most gps default to dd.mm.mmm. If dd.ddddd format was the better of the two, then I believe it would be the default.

I have mine set on dd.ddddd, but didn't help any with the trolling grid situation. It just needs to refresh more.

Next time you up, we will try this out again. I keep on trying.


DOP is the big factor, along with how the unit math handles the NMEA0183 position sentence. This is where the math fault I keep on harping about shows up. They round up/down numbers.

Each manufacturer have their own method of reporting precision so to make their product look smarter than their competitors.

Any selected format will get you to the same point on the map.

I talked to Trimble. Tech support fellow said with the handheld consumer units, it is a insignificant setting, just a user preference....

I DON'T KNOW.