02-01-2007, 02:30 PM
These modern Birds are nice finders. From the $200 greyscale models up into the big buck models like the 700 series. That 787 is all the sounder I would ever need in fresh water. The 567 will probably be my next.
As I understand it, Real time sonar is the result of a new computer component inside your finder. Older finders had a single microprocessor that would send a signal and wait for the return signal before sending the next signal. This caused a slight delay in the information on the screen, longer delay in deep water. Sometimes when ice fishing I can hear my transducer sending signals, it's not that fast.
New technology allows signals to be sent at a rate of about 6 per second and randomly recieve them back for display. Thats about 0.166 of a second between signals (Just a touch slower than John Force on a good day) instead of a full second.
The reason flashers work so well is that they send a signal every time the contact passes Zero, about 8 times a second (at 480 rpm) and recieves them in random order as well. That is why it is considered real time.
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As I understand it, Real time sonar is the result of a new computer component inside your finder. Older finders had a single microprocessor that would send a signal and wait for the return signal before sending the next signal. This caused a slight delay in the information on the screen, longer delay in deep water. Sometimes when ice fishing I can hear my transducer sending signals, it's not that fast.
New technology allows signals to be sent at a rate of about 6 per second and randomly recieve them back for display. Thats about 0.166 of a second between signals (Just a touch slower than John Force on a good day) instead of a full second.
The reason flashers work so well is that they send a signal every time the contact passes Zero, about 8 times a second (at 480 rpm) and recieves them in random order as well. That is why it is considered real time.
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