my inexpensive Lowrance Reveal Hook5 reads 10 degs warmer...

[Darth-Baiter]

....than any of my friends.  super annoying.  water was 59 degs on everyones fish finder.  my finger felt cold water.  

 

my fish finder indicated an impossible 69 degs.  balmy.  fish should be spawning

 

i lost my micro SD card, and i'm currently putting on pants to go buy another one for a software update.  i did a hard reset.  no change.

 

any thoughts?  i know i can change the temp datum to calibrate it, but that annoys the OCD version of me to no end.  time for an upgrade? i have been learning how to read side scan and could use the upgrade i suppose.  

[TnRiver46]

Subtract 10

[king fisher]

Buy a thermometer made for aquariums at a pet store.  They are inexpensive an accurate.  Then compare to your fish finder.  Most fish finders have a Temperature offset in the settings menu.  I'm not sure about your model, but it might have the option.  If not, than subtract the difference in your head.

       On the sport fisher I captain, we have $30,000 worth of electronics on board, one garmin system, and one Furuno system, and I still check the water temp. daily with a thermometer.  It is not uncommon for one unit on the boat to read a few degrees high and the other few degrees low.  I go to the menu and change the setting to read correctly.  Most of the time you will only have to change the offset one time, and it will read correctly for years.

[Darth-Baiter]

thanks.  I found the calibration option.  I did just subtract 9.8 deg..for fun.

 

I will dangle a real thermometer overboard next time to double check.  I have some at work that we measure concrete temps with that are overly precise.  

[WIGuide]

Just out of curiosity, where is your transducer mounted and what kind of boat or watercraft is it on?

[Darth-Baiter]

3 minutes ago, WIGuide said:

Just out of curiosity, where is your transducer mounted and what kind of boat or watercraft is it on?

Kayak. In the transducer cubby hole. 

[WIGuide]

Gotcha, it could just be a wacky temp sensor that reads high then or possibly it doesn't sit quite as deep in the water as the others or the transducer is still able to retain some heat from the air. Regardless, if you've adjusted the temp offset I would think it would be fine since you said it seems to read consistently warm. 

[Darth-Baiter]

Lowrance wants me to do the software update.  done.

 

then they want me to go at it with a super freshly charged battery.  I am charging up my better battery that actually goes to 12.4V and I will try that.  I am a skeptic that will make a diff. 

 

probably the universe telling me I need livescope.  hahahha....JK.  

[WIGuide]

I think that is 100% what the universe is telling you! haha

[@reelChris]

On 1/3/2023 at 7:14 PM, Darth-Baiter said:

they want me to go at it with a super freshly charged battery.  I am charging up my better battery that actually goes to 12.4V and I will try that.  I am a skeptic that will make a diff. 

 

I can't imagine how it would matter either, but FYI - 12.4 volts is about 75% charge.  12.6 volts is approx 100%.  If your battery can't get above 12.4 after a full charge, it's probably going bad.

[Darth-Baiter]

13 hours ago, @reelChris said:

I can't imagine how it would matter either, but FYI - 12.4 volts is about 75% charge.  12.6 volts is approx 100%.  If your battery can't get above 12.4 after a full charge, it's probably going bad.

yea.  I am using those Nocqua batteries.  they are not that robust.  

 

none of mine or my friends go over 12.4 anymore.  I am gonna buy another type of battery.  go big.