Справочник Пользователя для Humminbird id-1

HOW SONAR WORKS 
 
Humminbird depth sounders work on the basic principles of sonar. An electronic signal 
generated in the unit is changed to an ultrasonic signal by the transducer or Sensor, 
which sends the signal toward the bottom. The signal travels downward until it strikes 
either the bottom or an object above the bottom. Then, signals or echoes bounce back 
to the Sensor, which receives them and changes them back to electronic signals that 
can be displayed on the unit’s screen. 

 
Why 455KHz? 
 
Deepwater depth sounders have long used 50KHz for best deepwater performance, but 
they suffer with poor definition. Shallow-water units use a higher frequeney 200KHz 
system for better target separation and detail. But TCR technology takes high definition 
to a new level with its exclusive 455KHz operation. 
 
What does that mean to the fisherman? TCRs have twice the frequency, three times the 
power (1600 watts, peak to peak) and twice the detail of other units. You can clearly 
separate fish from the bottom and from structure, and you can see individual fish in a 
way that ordinary depth sounders just can’t show them. Quite simply you see more fish 
with more detail! 
 

The TCR ID-I features our exclusive 455KHz high-definition performance system - twice 

the frequency, three times the power (1600 walls peak to peak) and twice the detail of 

other units.