Question about Humminbird Smartcast RF15 Fishfinder

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My smartcast rf15 keeps giving a depth of 15-17 meters in lakes that are only 2 meters deep (everywere actually). the depth is on auto, i've tried everything, put in new batteries, changed all settings...

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Posted on Jan 02, 2017

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SOURCE: My hummingbird rf15 smartcast fish finder has

The Smartcast system uses the wireless version of a simple transducer and thermometer to locate fish, show structure and water temperature. From your description, it sounds like the transducer portion of the Smartcast device has stopped working.
Transducers are both simple and complex, sturdy and delicate. Here is a Science Minute: A fish finder electrical signal is sent to the transducer. The electrical signal to energize the transducer crystal is generated by an amplifier. The energized crystal reverberates at a particular frequency, to convert the electrical signal into mechanical acoustic or sound energy. The acoustic energy or sound waves causes oscillation of the water molecules through which the sound travels. The sound is pulsed out in a defined beam. These do not travel out in a straight line but in a wave pattern. The acoustic pulse travels through the water at a rate of approximately 4800 ft (1500m) per second in saltwater and 4920 ft/sec in fresh water.

The problem is that the crystal in all transducers (permanent mount, thru-hull mount and castable) is delicate. It is a crystal. Unfortunately the warranty on most of these is six months, and unless yours is newer than that, you may need to buy a replacement castable. The handheld unit should still work. While I think the idea of knowing what is "over there" is a good one for shore fishing, I haven't bought these systems because I could never get over the idea that repetitive casting of a crystal, no matter how well-housed, was a good idea. Good luck.

Posted on Sep 27, 2011

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1 Answer

HOW DO YOU CONVERT 185 EUROS PER CUBIC METER INTO SQUARE METER


That all depends on the depth or thickness of the area you want to cover say for example the area you want to cover is 100mm deep you would get 10 square meters covered by 1 cubic meter but the square meters be is all dependent on the depth of coverage required less than 100mm means more square meters thicker coverage is less square meters from the same cubic meter

Feb 06, 2017 | Office Equipment & Supplies

1 Answer

My hummingbird rf15 smartcast fish finder has stopped scanning.it still provides the water temperature but it no longer displays the depth and does not scan the bottom.


The Smartcast system uses the wireless version of a simple transducer and thermometer to locate fish, show structure and water temperature. From your description, it sounds like the transducer portion of the Smartcast device has stopped working.
Transducers are both simple and complex, sturdy and delicate. Here is a Science Minute: A fish finder electrical signal is sent to the transducer. The electrical signal to energize the transducer crystal is generated by an amplifier. The energized crystal reverberates at a particular frequency, to convert the electrical signal into mechanical acoustic or sound energy. The acoustic energy or sound waves causes oscillation of the water molecules through which the sound travels. The sound is pulsed out in a defined beam. These do not travel out in a straight line but in a wave pattern. The acoustic pulse travels through the water at a rate of approximately 4800 ft (1500m) per second in saltwater and 4920 ft/sec in fresh water.

The problem is that the crystal in all transducers (permanent mount, thru-hull mount and castable) is delicate. It is a crystal. Unfortunately the warranty on most of these is six months, and unless yours is newer than that, you may need to buy a replacement castable. The handheld unit should still work. While I think the idea of knowing what is "over there" is a good one for shore fishing, I haven't bought these systems because I could never get over the idea that repetitive casting of a crystal, no matter how well-housed, was a good idea. Good luck.

Sep 27, 2011 | Humminbird Smartcast Rf35

1 Answer

The screen is not displaying anything but tempeture only a black line across the top of the screen


Hi Andy, check the pin contacts on the transducer and unit, if they are ok then the transducer needs to be replaced, regards Phil.

Sep 27, 2011 | Humminbird Smartcast RF15 Fishfinder

2 Answers

Just purchased and Eagle Fishmark 320 used. Will not display depth reading - just shows 0'0"? I have reset to factory settings. We have had in lake,same thing. Right now in 5 gallon bucket of...


Hello! Do you have the PDF users guide for your unit? I'm looking at a copy in the troubleshooting section...I don't want to cover information you have already looked at or tried...Since I do not know if you have that manual I'll give you a few items to check...

Measure the battery at the units power connector...Must be at least 11 volts DC...In portable mode it uses 8 D cell batteries= 12 volts
Make certain the Transducer is securely connected...
Did you use the in-line fuse supplied with the unit?...
Try the Manual Depth Range...First turn off Auto Depth Range...From the sonar Page Hit MENU...Down-arrow to Auto Depth Range...Hit ENT...Hit Up-Arrow to Depth Range...Hit ENT..
And the Depth Scale Range appears...Up-Arrow or Down-Arrow to select a different depth range...Hit Exit...The minimum depth the unit can read is 5 feet...

If you do not have the PDF guide, here is the link...

http://www.eaglenav.com/upload/Eagle/Documents/Manuals/seafinder320df_0143-661_101602.pdf


Let me know how you make out....Guru....Saailer

Sep 11, 2011 | Eagle Fishmark 320 Portable Fishfinder

1 Answer

The batterys keep failing after 2 or 3 shots even when re-placed with new ones,


depending on how long you've had it it just might have reached the end. i'm not familiar with GE brand cameras but the manufacturers site might have some more in depth answers for you

Aug 23, 2011 | GE Cameras

1 Answer

Hello, I would like to know, how to change the '' units of measure? How to change feet to meters? Model: QT-206W depht Thanks Vini.


Hi Vini!

There is no "meters" option on your unit. Feet is the only unit of measurement available.

In case you've misplaced your owners manual, you can view/download it at:
http://www.uniden.com/content/ebiz/uniden/resources/ownersmanuals/QT206om.pdf

Hope this helps

Jun 23, 2011 | Uniden QT206W Digital Depth Finder Transom...

1 Answer

I've purchased an Eagle 320 fishfinder 2 years ago and I've had to replace my transducer twice. Every time I'm out fishing lakers in 50 to 100 feet of water, I keep loosing the bottom mark and...


I have never heard of Eagle Fishfinders, but I would be inclined to package it up and send it back to them for checking under warranty, with a fault that should never happen. The brand leaders are Lowrance and Humminbird, with Garmin in 3rd place.

I have a Humminbird 998HD with Side Imaging. I had a 798SI before that and never a problem. the 998 cost me nearly 2 grand Canadian and is used on Lake Ontario, twice a week every week from May to October, and has been faultless. The 798 was used from 2008 to 2014 and also faultless. I think you have a 'Friday Special'.

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1 Answer

What size hole need to be dug to fit the liner?


The Koolatron Koolscapes 84 Gallon Pond Kit contains a 6x6 foot liner. The actual dimensions of the pond could be varied but you will want a 6-10 inch overlap on the bank. Basically depth x2 + width = 5ft. 2-6in. So approximately 1ft deep by 3ft. across. If you are planning on keeping koi 2ft. deep is the bare minimum 3ft. if you have freezing conditions so I wouldn't recommend it with a pond of this size.

Mar 31, 2011 | Koolatron Koolscapes 84 Gallon Pond Kit

1 Answer

Humminbird rf15 menu says "waiting for signal"


The remote transmitter needs to be in the water for the rf15 to pick up a signal. (green peice has to be in the water).

Mike

Jan 06, 2009 | Humminbird Smartcast Rf 35 Dual Display...

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