VEXILAR FL Series User Manual

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Pioneers in Marine Electronics
Established in 1960, Vexilar, Inc. has been a leading innovator
of marine electronics in the sport shing industry for over 60
years.
Some of our innovations include the rst:
• Straight-line paper graph for sportshing (model 155)
• CRT (television) display (model 660)
• Color display (model DE-12)
• Fish alarm (model 120-SOS)
• Liquid Crystal Display (LCD) (model 480)
• Self-leveling ice shing transducer design (Ice-Ducer)
• The rst split-screen zoom asher (model FL-18)
• Shoot-through-aluminum transducer design (AlumaDucer)
• 10’ Range Flasher (FL-22HD)
• Transducer with three cone angles in one housing.
• WiFi sonar driven by mobile app (SonarPhone)
• Aftermarket Digital Depth Display for FL ashers (DD-100)
• Flasher to use Brushless Data transfer tech (FLX-28)
• Broad Band asher sonar (FLX-30BB)
How Sonar Works
SONAR stands for SOund NAvigation and Ranging. Sound travels through fresh water at a speed of approximately 4920 feet per second.
A sonar device (depth nder/sh nder) measures the amount of time a burst of energy takes to travel to the bottom and return to the
transducer. This time variation is then displayed on the readout of your sonar. When the depth gets deeper, the time of travel for the
sound increases. The burst of energy, known as the transmit pulse, is generated by the sonar’s transmit circuitry. This burst is delivered
to the water via the transducer. The return signal, known as the echo, is received by the receiver circuit, also via the transducer. A central
processing unit makes the calculations to determine the depth and signal strength of the bottom and other targets.
The sonar signal sent from the transducer will reect, or bounce o of any object that has a dierent density than water. This makes it
possible to detect not only the lake bottom, but also vegetation and sh.
How Flashers Work
The sonar portion of a asher works in the same manner as any other graph or LCD sonar
device. The dierence is in how the return signal is displayed. Instead of adding the data to a
progressive representation of the bottom to construct a history, the data on the asher display
always represents the current point in time, also known as “real time”. The display consists of
a wheel with indicator lights mounted in one location. The wheel is spun at high speed and the
lights turn on and o rapidly to show the sonar readings.
The Vexilar Advantage
Vexilar’s sonar design oers an optimal balance between the power of the transmitted pulse and the sensitivity
of the receiver circuit. Excessive power has been shown to cause premature transducer failure, distortion of the
sonar signal, and possibly spook sh from the audible noise they hear. Vexilar provides a balanced performance
level for a wide range of shing scenarios.
Flasher Wheel Stationary
Flasher Wheel Spinning
Lights turn on
and off rapidly
as the wheel is
spun
VEXILAR HISTORY
19 60
own the ice
The FL & FLX series three-color flashers continue to lead the way
in real-time high definition flasher performance. Quality products
backed by world leading customer service are the bedrock of
Vexilar, Inc.
Flasher-Family-Manual-2020.indd 2-3Flasher-Family-Manual-2020.indd 2-3 5/20/20 2:16 PM5/20/20 2:16 PM

VEXILAR FL Series Specifications

General

Target Separation	2.5 inches
Depth Range	Up to 200 feet
Transducer	Dual Beam
Sonar Technology	Flasher
Depth Capability	200 feet
Beam Angle	12 degrees
Battery	12V
Weight	Varies by model (typically 6-8 lbs with battery)