Why do flashers always show the depth

**SweetHomeAlabama** · 08-04-2010, 09:49 AM

but the high-priced GPS/fish-finders will not at high speeds (> 30 mph)

**Barnacle Bill** · 08-04-2010, 10:23 AM

They do if the transducer is installed correctly. But sometimes that is hard to do.

**Humminbird_Greg** · 08-04-2010, 01:18 PM

You also have to consider that many flashers only show a depth indicator (not a digital depth number), have less sonar signal processing to do than a chart type sonar unit and don’t have to use any processing power to update a GPS track and/or map either. But a lot of times it’s like Barnacle Bill said: “They do if the transducer is installed correctly.”

**slimeyslab** · 08-04-2010, 06:34 PM

Originally Posted by Humminbird_Greg

You also have to consider that many flashers only show a depth indicator (not a digital depth number), have less sonar signal processing to do than a chart type sonar unit and don’t have to use any processing power to update a GPS track and/or map either. But a lot of times it’s like Barnacle Bill said: “They do if the transducer is installed correctly.”

Can't use the GPS refresh as a reason..:D

**c1bigocarp** · 08-05-2010, 10:58 AM

I do not have a problem with my 798 not showing depth until I get above 54mph and then the transducer is out of the water. Your screen shot will not keep up at this speed of course but the depth reading will.

**Cane Pole** · 08-05-2010, 11:03 AM

This is why I have a electromechanical flasher. No dummy (microprocessor) in the real time loop.

**Doug Vahrenberg** · 08-05-2010, 09:00 PM

My boat holds 2D Readings over 70mph. How? Transducer Location. Location. Location.

**Cane Pole** · 08-05-2010, 09:42 PM

Went for a ride with a buddy in his Cessna 340 few weeks ago. He just got it restored and took me for a show and tell. My Garmin did good at 200+ knots @10,00 feet. Wonder what that 1100 would do at this speed and altitude?::p

Forgot to say my Garmin matched the AIS instrument in the cockpit.

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