velocitek speedpuck

[fred1diver]

anyone use this device?
might be a new addition to Narcosis for next year

how do you like it?

 

[Tim22]

I used one on my Compac SunCat and it worked really well.

Tim

 

[Jackdaw]

A very good, if somewhat expensive GPS speedo for showing SOG.

From the same company, look at the ProStart that adds a digital compass. Indispensable on BlueJ.

 

[fred1diver]

it does include the digital compass

 

[Jackdaw]

it does include the digital compass

Right... But only one at a time....

 

[Joe]

thus the reason for double the price.. heh, heh.

 

[GGordonWoody]

Hmm, looks good. I didn't see a mode for it to automatically switch display of speed and heading, do you have to keep pressing the button? I like the logger, and the tack feature (I'm stealing that - heh-heh). I'm sure you can plot your data right in Google Earth. Display seems to have good contrast too, might be one of those new Sharp memory displays (ultra-low power). I imagine mA mostly drawn by GPS receiver and CPU (I hate when they don't spec the operating mA). The awesome accuracy is derived from measuring the Doppler shift of the satellite transmit frequency using phase-lock-loop. Here's a paper that presents an overview ...
Edit - added www. to link
Paper presents solid reasons for Doppler method over TrackPoint method for accuracy in race-critical events; primarily sites sailing.
www.bioresonant.com/dl/download.htm?name=HighAccuracySpeed.pdf

Caps off to Fred for bringing this our attention!

 

[chuckwayne]

have one on our 216 - works really well