Marine Electronics Forum - Which Fishfinder

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View Full Version : Which Fishfinder


gs535
03-21-2010, 07:45 AM
I presently have a Garmin 540s unit on my 21' CC. Like the unit very much, but hate the split screen when using the sounder. So I decided to get a stand alone fishfinder. Looking at the Furuno 620. I fish in mostly 400 feet or less, jigg on wrecks, and troll. I started wondering if I should go with a Lowrance HDS-8 try that or add another 500 series. So would you guys recommend:

1. Furuno 620 ( in the middle cost wise, maybe best sounder?)
2. HDS-8 (most expensive, one unit)
3. Add an additional Garmin 500 series (540/541/545/546) and use all the present wiring. (cheapest way to go but sounder probably not as good.)

Thanks,
George


HighTechRedneck
03-21-2010, 08:21 AM
I had the same problem. I have the garmin 430 and hated the splitscreen and as a sounder I thought was garbage but as a chartplotter I really liked it. I ended up adding the furuno 620 to my boat. even with less power than the HDS 8 if your max depth is 400 than the 620 i think will outperform the hds8 and cost less.

HTR

23Dorado
03-21-2010, 08:36 AM
I would go with the 620.


abbor
03-21-2010, 09:25 AM
I have both HDS-5 and FCV-620 and I'm very happy with both units. If you have space for two units, I will recommend FCV-620 due to the very simple user interface, rotary knobs are faster than a menu based user interface.

fedu
03-21-2010, 11:14 AM
Sorry to be bringing the bad news, Kill me if you want but really I think the detail of a 1Kw transducer is essencial when jigging +300ft, the amount of extra fish detail you get, and the speed that you can scan is worth the extra price.

I love the Furuno FF better than Garmin, we have a 7000F on our southern Angola boat and it's a great FF.

Don't know the price difference but jigging or bottom fishing +300 ft I would go 1Kw not that the 600W transducer won't show you the bottom structure, but the extra detail and fish of the bottom of the 1Kw tranducer.....

Probably is me or my setups, but.

abbor
03-21-2010, 11:20 AM
The big difference between a 1kW and a 600W transducer is the difference in sensitivity not the difference in sounder output power. A 1kW transducer will work excellent with both HDS and FCV-620. If sensitivity and target seperation is very important for jigging, go for HDS. Makes much more out of a standard 600W transducer than any other sounder. Go for an Airmar P66 or B60 instead of the Lowrance transducers.

fedu
03-21-2010, 11:31 AM
The big difference between a 1kW and a 600W transducer is the difference in sensitivity not the difference in sounder output power. A 1kW transducer will work excellent with both HDS and FCV-620. If sensitivity and target seperation is very important for jigging, go for HDS. Makes much more out of a standard 600W transducer than any other sounder. Go for an Airmar P66 or B60 instead of the Lowrance transducers.


Analog & Digital fishfinder's that's probably what you are talking about, Lowrance HDS is not the only digital FF around, there are other options also.

If The FCV-620 can use a 1Kw transducer driving it with 1Kw, then no doubt, FCV-620 and 1Kw, like you sayd extra sensivity and target separation, essencial for jigging for bottom species (like grouper), if jigging upper water column the 1Kw is better but the 600W will also do the job.

I have a P66 on my main boat with Garmin 4008 and GSD22, the furuno 7000F 1kw or the Lowrance HDS or the Hummingbird 787 (both digital, with the regular "in the box" transducers) are much better fishfinder sensivity and target separation wise off the bottom.

P.S. - My usual jigging grounds are around 330ft, though I've jigged deeper (600/800ft) but not that regularly.

BigPumper
03-21-2010, 11:37 AM
If im not mistaken, the fcv 620 is a 600 watt unit, the fvc 585 is 600 or 1kw unit. I'd go with the fcv 620, and leave the lowrance for bass fisherman.

gs535
03-21-2010, 11:54 AM
My Garmin has been able to show structure with no problem. I clearly see wrecks in about 250 feet. Just don't see fish definition I'd like. I would like a 1Kw unit (FCV585), but the cost would obviously go higher. Just don't think I really need it. Been searching for used ones. I am also aware I can go with a 1 Kw tranducer on a 600w unit. If we start talking the 585 a HDS-8 starts to make sense just don't how the sounder compares to the furuno. I hear great things. My boss fishes with George Povoromo (spelling?), he is going to pick his brain about it.

BigPumper
03-21-2010, 02:32 PM
The fvc 620 and a 600w ducer will give you more definition than you will ever need imo. The 585 and a 1kw ducer will be near 2k.

abbor
03-21-2010, 03:37 PM
Analog & Digital fishfinder's that's probably what you are talking about, Lowrance HDS is not the only digital FF around, there are other options also.



No it's not Analog and digital fishfinders I'm talking about. And yes I know there are other digital fishfinders around, If you had read what I wrote earlier in this thread you would have seen I have both HDS and FCV-620.

Digital fishfinders don't improve sensitivity compared to analog. The big difference is between HDS and all other fishfinders. HDS output a complex signal called a CHIRP and use correlation at the receiver. By combining these two technologies HDS gains improved sensitivity and and target separation. Two targets which are so close they will be shown as one target on a conventional (analog or digital) fishfinder will be shown as two targets on HDS.

HDS output power is only 32W, but due to the advanced technologies used in the transmitter and receiver it will outperform all 1kW sounders.

wheresjane
03-21-2010, 05:24 PM
I have always gone by the rule when it comes to radar and bottom machines go with Furuno. Thats their speciality. Usually on a 1kw 'ducer it's a through hull mount.

fedu
03-22-2010, 01:47 AM
No it's not Analog and digital fishfinders I'm talking about. And yes I know there are other digital fishfinders around, If you had read what I wrote earlier in this thread you would have seen I have both HDS and FCV-620.

Digital fishfinders don't improve sensitivity compared to analog. The big difference is between HDS and all other fishfinders. HDS output a complex signal called a CHIRP and use correlation at the receiver. By combining these two technologies HDS gains improved sensitivity and and target separation. Two targets which are so close they will be shown as one target on a conventional (analog or digital) fishfinder will be shown as two targets on HDS.

HDS output power is only 32W, but due to the advanced technologies used in the transmitter and receiver it will outperform all 1kW sounders.

Did not knew about the CHIRP, thanks.



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