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Old 09-11-2015, 08:40 PM   #1
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Default Lowrance Point 1, Simrad GS25, Garmin 19X and other N2K GPS antenna

The Lowrance Point 1 and the Simrad GS25 seem like the exact same product with a different name. Is this true? They both seem better than the Garmin 19x as they have an electronic compass built in. Since all of these are N2K Antenna, could they be used interchangeably? To be more specific, Could I a use a GS25 or Point 1 in place of a 19x on a Garmin 7215 or any other Garmin that uses the 19x for that matter?

Finally is there any other N2k antenna that is better than all the ones mentioned that could be used with a Garmin in place of the 19x?

TIA,
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Old 09-11-2015, 09:26 PM   #2
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Airmar GH2183 is a better choice if you want to use it as a heading sensor. The Simrad/Lowrance are the same thing. The Airmar is more stable, but all of them are very accurate as a GPS. the Airmar is considerably more expensive.
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Old 09-12-2015, 06:24 AM   #3
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Airmar GH2183 is a better choice if you want to use it as a heading sensor. The Simrad/Lowrance are the same thing. The Airmar is more stable, but all of them are very accurate as a GPS. the Airmar is considerably more expensive.
Yes I would want to use it as a heading sensor for positioning myself very slowly above a wreck. It looks like its 3x the price of the navico products. Is it really worth that much more? The Airmar literature says it eliminates the need for an electronic compass mounted down below in a Auto pilot install. Couldn't the navico products do the same? Not sure I could justify 3x the price just for slow speed positioning but thank you for making me aware of it!
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Old 09-12-2015, 06:34 AM   #4
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...Could I a use a GS25 or Point 1 in place of a 19x on a Garmin 7215 or any other Garmin that uses the 19x for that matter?
You must be careful with the Garmin 19x GNSS receiver, as it comes in two versions. One is a NMEA-2000 product, and the other is a NMEA-0183 product. If you want to use the Garmin 19x with NMEA-2000, be sure to get the correct version of the product.

The Garmin 19x GNSS receiver does not include a heading sensor. The POINT-1 and GS25 have heading sensors contained in the same housing as their GNSS receiver.

The GNSS receivers in the three products appear to be very similar in their specifications. They can all receive the GPS and GLONASS constellations, which are the two fully operational systems available in North America today. The all can utilize WAAS. They all have a 10-Hz update.

Last edited by jhebert; 09-12-2015 at 10:49 AM.
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Old 09-12-2015, 09:43 AM   #5
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Yes I would want to use it as a heading sensor for positioning myself very slowly above a wreck. It looks like its 3x the price of the navico products. Is it really worth that much more? The Airmar literature says it eliminates the need for an electronic compass mounted down below in a Auto pilot install. Couldn't the navico products do the same? Not sure I could justify 3x the price just for slow speed positioning but thank you for making me aware of it!
Navico advertises the Point1 as a replacement for the RC42 flux gate compass. They don't say why..... It's quite a bit cheaper than the RC 42 and seems to work OK. Be interested if anyone has a dual installation that could speak to that.

The Navico unit is your typical cheap consumer waterproof construction. Don't know if the Aimar is built any better. I suspect that it will work just as well, if perhaps not as long as the Airmar since improvements could only be in the firmware or physical construction. I'd be (pleasantly) surprised if Aimar tweeked the firmware.
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Old 09-12-2015, 09:51 AM   #6
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I run the Simrad antenna on my Garmin 5212. The NMEA2000 aspect of it makes it a stupid simple install. I unplugged my Garmin antenna from the network and plugged in the Simrad. Done.

It's been a few months since the install and so far so good.
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Old 09-12-2015, 09:56 AM   #7
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I believe the difference is the the Navico are not 3 axis Gyro stabilized. The Airmar website has a graphical comparison
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Old 09-12-2015, 10:03 AM   #8
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http://www.panbo.com/archives/2009/02/airmar_h2183_compass_best_in_class.html
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Old 09-12-2015, 10:03 AM   #9
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Yeah, I don't pretend to believe that the Navico products are equal to the Airmar antenna. Last I remember, the Navico stuff was specific about not using them for autopilot heading sensors. The Airmar is the better choice for that.
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Old 09-12-2015, 10:09 AM   #10
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Interesting. Thanks for the link. Although the Panbo article waxes eloquently about the Airmar sensor (and it indeed is different from the Navico / Simrad, I was wrong... again), I'm not too sure about the veracity of the test. I've had my boat in some pretty rocky water without the heading sensor pitching a fit (so to speak) like it's doing in the test.

Likely, the Lowrance MFD software is filtering the data. What is needed is a real live competition between the two units on the water. If anyone wants to send me a Airmar unit, I'm happy to oblige.

And I'd actually be interested in this - the Lowrance AP is pretty good for $1000, but hardly perfect. It has problems on beam and following seas, it doesn't pick up the course nearly fast enough to keep the boat from skewing. Now, in water that rough on a 22 foot boat, I'm typically piloting it manually but I'm always looking for improvements.
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Old 09-12-2015, 10:12 AM   #11
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Quote:
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Yeah, I don't pretend to believe that the Navico products are equal to the Airmar antenna. Last I remember, the Navico stuff was specific about not using them for autopilot heading sensors. The Airmar is the better choice for that.
Huh? Lowrance specifically ** recommends ** the Point1 for AP heading sensors. It includes it in the kit. The RC42 is $600 extra.

And I'm happy to believe the Airmar is better but I'd be happier to be shown it in the real world. The engineering test shown in the link above is interesting but a couple of steps away from the water.
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Old 09-12-2015, 01:56 PM   #12
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I believe the difference is the the Navico are not 3 axis Gyro stabilized. The Airmar website has a graphical comparison
Point-1 and GS25 also have 3-axis rate gyro.
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Old 09-12-2015, 01:58 PM   #13
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Yeah, I don't pretend to believe that the Navico products are equal to the Airmar antenna. Last I remember, the Navico stuff was specific about not using them for autopilot heading sensors. The Airmar is the better choice for that.
Navico has spent a lot of resources in improving the Point-1 and GS25 software, Point-1 is now qualified to be used with the Lowrance autopilot.
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Old 09-12-2015, 06:24 PM   #14
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Navico has spent a lot of resources in improving the Point-1 and GS25 software, Point-1 is now qualified to be used with the Lowrance autopilot.

Thanks for the update, when I purchased the Airmar, it was approved for radar overlay, but not autopilot.

I really like that it was an easy install on my metal boat.

I am still looking for a used sat compass though...
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Old 09-12-2015, 06:27 PM   #15
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Huh? Lowrance specifically ** recommends ** the Point1 for AP heading sensors. It includes it in the kit. The RC42 is $600 extra.

And I'm happy to believe the Airmar is better but I'd be happier to be shown it in the real world. The engineering test shown in the link above is interesting but a couple of steps away from the water.
Huh? For a few years when it first came out Lowrance specifically said do NOT use it for autopilot. Obviously that has changed. I was unaware. Relax.
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Old 09-12-2015, 06:35 PM   #16
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I'm using the airmar with my 7612. It's the same as the garmin. Airmar makes it for them

https://buy.garmin.com/en-US/US/shop...prod63748.html
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Old 09-12-2015, 06:48 PM   #17
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I'm using the airmar with my 7612. It's the same as the garmin. Airmar makes it for them

https://buy.garmin.com/en-US/US/shop...prod63748.html
The advantage of the Airmar over the Garmin (as best as I can tell) is that the Airmar is available as the GH2183 which outputs GPS as well as heading for the same price as the Garmin heading sensor which doesn't seem to be available with the GPS.

Probably not noticed by most as the GPS is built into most plotters these days. It is not built in on my Furuno and I have a metal boat and needed the external GPS antenna.
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Old 09-13-2015, 03:35 AM   #18
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They do have built in but we bass fisherman prefer a gps puck as close to the transducer as possible for accurate way point marking. All I know is I wasn't going to trust anything lowrance as part of my system.
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Old 09-13-2015, 04:03 AM   #19
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To the OP's actual questions:

1) YES - the Lowrance Point 1 and the Simrad GS25 are the exact same thing, just with a different sticker on the side.

2) YES - Replace the Garmin GP19X with the GS25. Both are great external antennas (Garmin may be better in this arena, but we're splitting hairs). But having heading info going into the chartplotter is a wonderful thing.

It's plug-and-play. You can also just use the heading portion of the sensor by selecting the "data source" from the chartplotter's setup menus.
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Old 09-14-2015, 07:18 PM   #20
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Thank you everyone. This is exactly the type of discussion I was looking to bring forth.
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