texasfishingforum.com logo
Main Menu
Advertisement
Affiliates
Advertisement
Newest Members
Trophy Lake, firsand, Jinks535, Piney Woods Transplant, RSTX
114972 Registered Users
Top Posters(All Time)
TexDawg 101,244
hopalong 95,342
Pilothawk 80,761
John175☮ 78,828
Bigbob_FTW 72,346
JDavis7873 67,402
Derek 🐝 66,251
Mark Perry 62,446
Forum Statistics
Forums61
Topics1,144,023
Posts15,632,155
Members139,972
Most Online36,273
Jan 23rd, 2013
Print Thread
GPS ANTENNAE #13764500 11/10/20 04:22 PM
Joined: May 2008
Posts: 288
blackhorse Offline OP
Angler
OP Offline
Angler
Joined: May 2008
Posts: 288
IS AN EXTERNAL ANTENNAE MORE ACCURATE THAN THE INTERNAL ANTENNAE?

Last edited by blackhorse; 11/10/20 04:23 PM.
Moritz Chevrolet - 9101 Camp Bowie W Blvd, Fort Worth, TX - Monte Coon (817) 696-2003
Re: GPS ANTENNAE [Re: blackhorse] #13765070 11/10/20 09:37 PM
Joined: Oct 2003
Posts: 26,650
senko9S Offline
TFF Guru
Offline
TFF Guru
Joined: Oct 2003
Posts: 26,650
if in the same place i dont know. i do see a lot of external mounted on the rear of the boat, 7-10 feet from the unit that could make a slight difference.

Re: GPS ANTENNAE [Re: blackhorse] #13765086 11/10/20 09:44 PM
Joined: Jan 2018
Posts: 2,561
J
Jeff From Iowa Offline
Extreme Angler
Offline
Extreme Angler
J
Joined: Jan 2018
Posts: 2,561
I can only speak about helix. But the helix external allows you to display waypoints on 360 etc.. There might be other benefits but I dont remember them anymore.


I have mine on the back of my boat almost above the ducer, it doesnt really matter since I cursor over and mark brush on the brush etc, so my way points would be accurate using either...

Re: GPS ANTENNAE [Re: blackhorse] #13765266 11/10/20 11:53 PM
Joined: May 2009
Posts: 139
B
BigTxBassMan Offline
Outdoorsman
Offline
Outdoorsman
B
Joined: May 2009
Posts: 139
Don't they do something with making the direction of the boat on the GPS screen show correctly even if the boat is not moving?

Re: GPS ANTENNAE [Re: BigTxBassMan] #13765289 11/11/20 12:05 AM
Joined: Nov 2010
Posts: 4,791
W
Wayne P. Online Content
TFF Team Angler
Online Content
TFF Team Angler
W
Joined: Nov 2010
Posts: 4,791
Originally Posted by BigTxBassMan
Don't they do something with making the direction of the boat on the GPS screen show correctly even if the boat is not moving?


There are external GPS antennas, external GPS/Heading Sensors, and external Heading Sensors.

A Heading Sensor (compass) does that.
GPS cannot calculate Coarse direction when at less than .6 mph.
Humminbird units change the position curser to a O when that happens. A heading sensor keeps the position curser active and if installed correctly, indicates the direction the bow is pointed==very handy when fishing offshore waypoints.

Humminbird units can use an external GPS/Heading Sensor (AS GPS HS) directly connected, Minnkota iPilot LINK via Ethernet connection, and a Lowrance Point1 via NMEA2000


Helix 12 CHIRP MEGA SI+ GPS G3N, 1198c SI, Helix 7 CHIRP MEGA SI GPS G3,
Helix 10 MEGA DI+ GPS G3N, SOLIX 12 SI, MEGA 360, RC-1
Re: GPS ANTENNAE [Re: Jeff From Iowa] #13765301 11/11/20 12:10 AM
Joined: Nov 2010
Posts: 4,791
W
Wayne P. Online Content
TFF Team Angler
Online Content
TFF Team Angler
W
Joined: Nov 2010
Posts: 4,791
Originally Posted by Jeff From Iowa
I can only speak about helix. But the helix external allows you to display waypoints on 360 etc.. There might be other benefits but I dont remember them anymore.


I have mine on the back of my boat almost above the ducer, it doesnt really matter since I cursor over and mark brush on the brush etc, so my way points would be accurate using either...


It does matter. No they will not have the same accuracy.
A waypoint is created and located by a GPS antenna.
If you see a subject with sonar/Imaging and mark it, the location will be in relation to the GPS antenna. If that antenna is at the console, that's a created error of the distance between the sonar transducer and GPS antenna.


Helix 12 CHIRP MEGA SI+ GPS G3N, 1198c SI, Helix 7 CHIRP MEGA SI GPS G3,
Helix 10 MEGA DI+ GPS G3N, SOLIX 12 SI, MEGA 360, RC-1
Re: GPS ANTENNAE [Re: blackhorse] #13765706 11/11/20 04:44 AM
Joined: Jun 2017
Posts: 704
L
Lone_Wolf Online Content
Pro Angler
Online Content
Pro Angler
L
Joined: Jun 2017
Posts: 704
Used to be but not anymore, the early generation stuff from 2000 to mid 2000's the external were definitely more accurate. The internal gps now are just as good.

Previous Thread
Index
Next Thread

© 1998-2019 OUTDOOR SITES NETWORK all rights reserved USA and Worldwide
Powered by UBB.threads™ PHP Forum Software 7.7.3