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Wonder why they don't offer a waypoint offset for fixed gps receivers (puck)?
If they can offset depth, the they oughta be able to offset position. Be nice if a gas puck was in one location on the boat and we could offset the position relative to our fishing position in the boat. Just saying. This is technically possible.
I was thinking about this question and thought about writing a filter to offset the way points. How would you deal with what direction to offset to? If the puck was always 15 feet south of the fishing spot it would be easy but since the puck would always be 16 away in a moving direction it would be a challenge I can't figure how to quickly overcome.
I have thought about this so many times, and wished they had it. I haven't shelled out the money for an external receiver for my HDS unit yet. May have Sure would be nice to be able to adjust for the 7ft that I have between it and the ducer.
While in sidescan/downscan you move your cursor over an underwater target and mark it; is that waypoint directly over the structure when you return in GPS mode or off the distance from the antenna to the transducer?
I've though bout that as well. You'd have to be able to define the offset in 2d as opposed to the 1d depth offset, but it should be pretty easy to do.
CP probably has the answer and is just toying with everyone.....
When marking in side image mode the mark is directly related to the antenna/ receiver not the transducer.
But re-thinking the original question. All our map cards have calibration features that allow us to move the map or calibrate them..... so if we could calibrate the lat / long base map then maybe...
Still thinking....
CP, wouldn't the offset (bearing) change constantly? (Unless you were stationary of course, or your offset bearing somehow managed to be the same each time you created a waypoint)
CRAPPIEHUNTER68, I how do you get to the map (horizontal) offset/calibrate on the card. I haven't noticed that before.
They need a wireless puck...
The HB's have a map offset function. Can't remember exactly but I think you go to the menu while in Map view and look for offset. Then go to a known point and use that point to reset map position. Now that said I noticed when I did it it didn't really seem to stay fixed after I restarted the unit. Really it is just a cosmetic fix. In my situation I do not care greatly if my boat icon displays exactly at the point it should be on the map but that it displays exactly where I marked a point is important.
I have come to the conclusion the only fix for difference in transducer and receiver position is to have the external puck placed really close to the transducer.
I was thinking more in the line of Icon offset. This would be an omnidirectional offset and not affect the waypoint. Boat Icon= Current GPS position +-offset (in feet).
Yes. I have a bluehtooth receiver GPS (Garmin GPS10). Works great with my laptop.Quote:
Originally Posted by dnchance
I think you'd have to be moving for a gps offset to work. Otherwise it wouldn't know which direction to offset the waypoint to. One nice feature they could add to the hbird units would be an internal compass so the unit could maintain a bearing even when you're not moving. My garmin handheld has an internal electronic compass which seems to work pretty well as long as you calibrate it regularly.Quote:
Originally Posted by talltimber
Plus the offset would vary according to how many satellites you lock on to.
Position algorithms take care of this factor.Quote:
Originally Posted by Barnacle Bill
I like the Garmin electronic compass.:)Quote:
Originally Posted by TN Hillbilly
Most GPS units have a projection line. Most have distance rings. Lowrance has a projection circle which gives a circle in front of the boat icon of: one minute or 1 mile (other selections available). It would be nice if I could select 10 feet. That is the distance from my cockpit to the front of my boat.
Just thinking out loud folks. This is a doable feature.
Here is something (bearing forecast ring) like I am referencing. This is the Lowrance 1 minute projection circle.
I just want a 10 footer.
Canepole. I thought about the same thing but if you put the boat in reverse and start moving it will blow the whole thing because projection line is direction of travel.
In reverse, you use the boat icon, not the projection ring. I don't back up much though.Quote:
Originally Posted by CRAPPIEHUNTER68
Crossing the river with current, projection line is actually affected by cross current because it is true direction of travel.
I know I know.
You never fish in current.
Still would like to figure out a way that worked.
Well, you get the jest of what I am saying.:)Quote:
Originally Posted by CRAPPIEHUNTER68
I use the target rings the best I can.
I have seen the offset feature on the HB. I was thinking that you found something else on the map cards, or maybe an upgrade from Hotmaps or something like that.
I am not following you on the projection line I don't think. I understand a projection in our time/speed, but how does the projection line hook like you image shows there CP?
It is straight out in front of the boat. That curve is the trail (track) I left or should I say displaced.Quote:
Originally Posted by talltimber
Not a good picture. I will try again. Maybe zoom another scale or two.
Quote:
Originally Posted by talltimber
Better picture. Projection line in front of direction Icon. It is straight. Picture quality isn't perfect. This is the 1 minute projection. I would like selectable increments of projection in feet. I have a hard time judging distance. Old eyes.
OK, thanks.