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CHIRP or DownVū

Old 02-25-2014, 11:28 AM
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Default CHIRP or DownVū

Ok, I am a bit confused here, as the more I read the more i am not sure which type of transducer to get. I am looking at either a Garmin 840xs or 547xs, depending on how much money i decide to spend. What I am not sure about is the type of transducer. Garmin told me the All-in-one HD-ID and DownV™ Transducer for around $100 bucks is what i need so you are able to view a split screen, with chirp on one side and down vu on the other. Not sure if the product info person gave me the correct information, others have said the Airmar 150?

So my question, fishing coastal Florida waters, which is it, Chirp or Down Vū? Garmin also told me that the Down Vū is better for seeing structure and the CHIRP is better for seeing fish - is that right or wrong?

Last edited by oceanluvr30; 02-25-2014 at 11:52 AM.
Old 02-25-2014, 11:35 AM
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With the all in one from Garmin you will get Down V and 77/200 kHz pulsed sonar. No CHIRPing. If you get the 840xs you can get the GCV10 which will allow you to get a CHIRP transducer on your 840xs and a Side V and Down V transducer on the GCV10 box which is connected via Garmin Marine Network to your 840xs.
Old 02-25-2014, 12:02 PM
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Originally Posted by oceanluvr30 View Post
I am looking at either a Garmin 840xs or 547xs, depending on how much money i decide to spend. What I am not sure about is the type of transducer. Garmin told me the All-in-one HD-ID and DownV™ Transducer for around $100 bucks is what i need so you are able to view a split screen, with chirp on one side and down vu on the other. Not sure if the product info person gave me the correct information, others have said the Airmar 150?

So my question, fishing coastal Florida waters, which is it, Chirp or Down Vū? Garmin also told me that the Down Vū is better for seeing structure and the CHIRP is better for seeing fish - is that right or wrong?
Correct.......CHIRP for fish and DownVu/Side Vu for structure.


You can start off with the All in one..and if it is not what works..a simple matter to upgrade.
I am allowing all my customers to use the All in one for a month and then if not happy trade it up etc.



The Garmin 840xs has 3 different built in sonar systems.
Each has its own specific model of transducer(s) it can use.



1) Traditional 600/ 1000 watt sonar..and you can use any of the traditional transducers .

2) Single band CHIRP.
With that you can use the transom mounted B150M .
Or
the thru hull B150M, B75,B175 transducers.....this is what many are using....and later are adding the GCV10.

3) All in one downVu/ traditional sonar with the All In one transducer.
With this you will have traditional sonar and also DownVu (Structure scan) at the same time if you like.

Only one of these systems ca be use at one time because there is only one transducer port.





In addition....

The 840xs can also use the GCV10 black box DownVu / SideVu with its own specific transducer.
When using the GCV10 it transducer is connected to the GCV10..and then an ethernet cable from the GCV 10 connects to the 840xs.
And if you have radar..the radar can connect to the GCV10.....thus acting like a hub.

When using the GCV10 you then have multiple sonars presentations on one screen.

Last edited by semperfifishing; 02-25-2014 at 12:20 PM.
Old 02-26-2014, 03:15 AM
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Great info!
Old 02-26-2014, 06:08 AM
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So with the 840 and gcv10, I will have to buy a separate ducer for chirp sonar?

Two ducers on the boat: one for down/side vu, other for chirp? And the down/side is provided with the GCV10, but the chirp has to be bought separately? BM150 is the cheapest chirp at around $300.
Old 02-26-2014, 06:45 AM
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Originally Posted by leftyNC View Post
So with the 840 and gcv10, I will have to buy a separate ducer for chirp sonar?

Two ducers on the boat: one for down/side vu, other for chirp? And the down/side is provided with the GCV10, but the chirp has to be bought separately? BM150 is the cheapest chirp at around $300.
I think you got it. I am not sure what you mean by the CHIRP has to be bought separately unless you mean CHIRP transducer, and that is a yes. And a yes to two transducers, one for CHIRP and one for down and side V. TM150 is cheapest, but with such a kick ass system, don't try and find the cheapest transducer. Get the right transducer and have no regrets.
Old 02-26-2014, 06:48 AM
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Ok guys, went with the 840xs combo which includes the Garmin All-in-one Down V transducer. I figure i will try that and at some later date may upgrade to the chirp. Once it is installed I will report back...
Old 02-26-2014, 06:59 AM
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Im going to Boston Boat show today to look at electronics. What is the difference between single and multi band chirp ? What are the pros and cons etc ? I mean is a 1040xs system not as or just as good as a 6212 with gsd26 ?
Old 02-26-2014, 07:16 AM
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Originally Posted by Captain Frosty View Post
Im going to Boston Boat show today to look at electronics. What is the difference between single and multi band chirp ? What are the pros and cons etc ? I mean is a 1040xs system not as or just as good as a 6212 with gsd26 ?
Multi band CHIRP has more capability. You can use the dual band CHIRP transducers instead of just the single band. Depends on how deep your fish are. I don't look for fish below 300', so single band is plenty. If I fished down to 300' and also wanted to fish down at like 1000' having two bands would be a big improvement. Also the larger CHIRP sonar in the GSD26 can drive the BIG transducers that can do bottom at 10000'+
Old 02-26-2014, 07:52 AM
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Originally Posted by Captain Frosty View Post
Im going to Boston Boat show today to look at electronics. What is the difference between single and multi band chirp ? What are the pros and cons etc ? I mean is a 1040xs system not as or just as good as a 6212 with gsd26 ?
Adding to what stiletto has mentioned about the bands...

With the Single band CHIRP 840xs / 1040xs you then also have the ability to add the GCV 10 module to have Down and Side scan.


Old 02-26-2014, 09:31 AM
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so multi band is for deeper water ? I thought that was related to the powerful ducers . Is single band good up to 4-500' ? How come all these side scans look like theyre in a canyon ? dark below centerline and then structure ? I ll just ask the reps later.
Old 02-26-2014, 10:26 AM
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Originally Posted by Captain Frosty View Post
so multi band is for deeper water ? I thought that was related to the powerful ducers . Is single band good up to 4-500' ? How come all these side scans look like theyre in a canyon ? dark below centerline and then structure ? I ll just ask the reps later.
No canyon there... Read up on how to interpret Side Scan data...
Old 02-27-2014, 03:49 AM
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Originally Posted by Captain Frosty View Post
so multi band is for deeper water ? I thought that was related to the powerful ducers . Is single band good up to 4-500' ? How come all these side scans look like theyre in a canyon ? dark below centerline and then structure ? I ll just ask the reps later.
The closer the "canyon" the shallower the water. It is a measure of depth, not the outline of the waterway.

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