Yes. I have a dedicated GPS that is slower to pick up signals than my "cellular enabled" iPad. I use the iPad SOLELY for navigation on the boat and have never had a problem. Cellular service is turned off. It has a dedicated GPS. It's really not "silly". I use it below decks too for anchor watch.
Steve Suhana, C&C 32 Toronto On Sat, Oct 3, 2015 at 6:11 PM, Jerome Tauber via CnC-List < cnc-list@cnc-list.com> wrote: > OK - This is getting silly. Do you really believe the tiny GPS chip and > antenna in a cell phone or Ipad is going to outperform a dedicated handheld > GPS and pick up signals where the handheld GPS will not without some sort > of assistance. For a navigation message to travel from the satellite to > the receiver, they must be sent on a carrier frequency. In the original GPS > design, two frequencies were utilized; one at 1575.42 MHz(10.23 MHz × 154) > called L1; and a second at 1227.60 MHz (10.23 MHz × 120), called L2. The > satellite output is about 25 watts. These signals are quite weak when they > reach earth and will not penetrate the metal roof on your house or your car > and may be attenuated by the fiberglass roof on your boat to the point > where they may not be readable by an Iphone or Ipad. That's why your > handheld GPS will not work in your basement. The only reason the Ipad or > Iphone will work is that it is assisted. Even it you don't have a > cellular connection you probably have wifi in your house that is being used > for the assist. A typical A-GPS-enabled receiver will use a data > connection (Internet, cellular or other) to contact the assistance server > for aGPS information. If it also has functioning autonomous GPS, it may use > standalone GPS which does not depend on the wifi or cellular network but > then must depend entirely on the GPS signal from the satellite and > therefore will not work if that signal is not strong enough. > <https://en.wikipedia.org/wiki/Assisted_GPS#cite_note-cnet-3> Some A-GPS > devices do not have the option of falling back to standalone or autonomous > GPS. Many mobile phones combine A-GPS and other location services > including Wi-Fi Positioning System and cell and sometimes a hybrid > positioning system. Accurate location requires a fix on at least 3 > satellites, and these signals do not penetrate buildings (even the roof > of a car can attenuate the GPS signal to where it is not useful). So, if > you are not in view of 3 satellites, A-GPS can estimate your location based > on 2 satellites plus cell tower data (less accurate). If you aren't in view > of at least 2 satellites, the iPhone uses internet WiFi or cell-tower > triangulation, which is not very accurate. Jerry > > > -----Original Message----- > From: Rick Brass via CnC-List <cnc-list@cnc-list.com> > To: cnc-list <cnc-list@cnc-list.com> > Cc: Rick Brass <rickbr...@earthlink.net> > Sent: Sat, Oct 3, 2015 3:38 pm > Subject: Re: Stus-List IPad Question... > > I have an IPad 3 which was a gift. It has cellular capability (so it has a > built in GPS), but has never been connected to cellular service. The GPS > function operates perfectly below decks and everywhere else. I have never > had a problem receiving GPS data, even inside my house which has a metal > roof. I can’t say the same for the handheld GPSs (multiple) that I carry on > the boat as backups for the ditch bag. > > I have SKIPPER on the IPad for a navigation app. (Selected that one > because of a desire for Bermuda charts when I was loading the IPad, and > Bermuda region is included as part of North America so there was no cost.) > Skipper uses NOAA charts, and the app checks for NOAA updates to the charts > that have been downloaded to the tablet each time the app is turned on > while connected to WiFi. On the last two deliveries I made, I found that my > charts were more up to date than the charts on the boat’s chartplotter. > Plus I run the Active Captain Companion on the IPad, which gives warnings > about hazards to navigation that are within a specified angle and distance > from the boat’s heading. One of the Raymarine plotters on a boat offered > this feature, but the charts were out of date. The tablet was more accurate. > > If you are getting your AIS information off the net, you should be aware > of a couple of things: The information is not current, not all AIS > information is included, and the AIS repeaters on the Internet have the > capability of being hacked. > > I seem to recall that a number of manufacturers are making instruments and > radios that can be connected to tablets and phones by using Bluetooth. Why > not just use the Bluetooth connection instead of building a WiFi network on > the boat? > > My IPad was a gift, so it cost me nothing. I agree with Dennis. A > WATERPROOF and shock resistant Galaxy tablet is a bit more than $250, but > still less than half the cost of an IPad. Plus the software is generally > less expensive. I have more invested in the Otter Box and LifePruf cases > for my IPad than a galaxy tablet would have cost me. > > But the discussion started with David’s question about using an old IPad > for a plotter. If the IPad had cellular capability (so it has a GPS) go for > it. You will spend something up to $50 (and maybe less) on chart plotter > software and charts, and most of the other navigation apps you will want > like Active Captain and Drag Queen are free. If no built in GPS, put your > music on the IPad and buy a Galaxy tablet with cellular capability. > > Rick Brass > Washington, NC > > > > *From:* CnC-List [mailto:cnc-list-boun...@cnc-list.com > <cnc-list-boun...@cnc-list.com?>] *On Behalf Of *Jerome Tauber via > CnC-List > *Sent:* Friday, October 02, 2015 11:27 AM > *To:* cnc-list@cnc-list.com > *Cc:* Jerome Tauber <jrtau...@aol.com> > *Subject:* Re: Stus-List IPad Question... > > GPS built into phones and pads is limited and depends on cellular service > being available. Moreover, reception below decks is poor to non-existent. > Also, with wifi you can transmit AIS and any other NMEA info such as wind > speed, depth, and even radar. It's a different ballgame entirely. You > can even receive on multiple Pads and from anywhere on the boat. Your > Ipad or Android becomes a complete navigation system using an app such as > INavx and is available anywhere on the boat. Of course, you must have nmea > sensors to plug into the wifi router. Jerry J&J > > > > -----Original Message----- > From: Dennis C. via CnC-List <cnc-list@cnc-list.com> > To: CnClist <cnc-list@cnc-list.com> > Cc: Dennis C. <capt...@gmail.com> > Sent: Fri, Oct 2, 2015 11:17 am > Subject: Re: Stus-List IPad Question... > or you can buy a 10" Samsung Galaxy Tab with GPS for $250. Add Navionics > for $10. Poof! Chartplotter. > Dennis C. > > On Fri, Oct 2, 2015 at 10:08 AM, Jerome Tauber via CnC-List < > cnc-list@cnc-list.com> wrote: > > I have been looking into this and there is an excellent solution. You > can plug your onboard GPS into a wifi transmitter and receive the signal > anywhere on your boat on your Ipad. This is compatible with INavx and > other software. You can also transmit AIS if you have an AIS receiver and > receive it on the Ipad (or any Android device) through INavx or other > software. This is the future of onboard navigation. Here are some > transmitters though there are many others. Jerry - J&J > > > > > > > > [image: Image removed by sender. 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I'm thinking good for chartplotting > software for the 2X (maybe) a year that I need a chartplotter. > > Needs a GPS. I shop and see "Bad Elf"s" for $150+. Huh? I bought a GPS > dongle for my laptop for $20. Is this more of Apples proprietary product > BS? > > (sorry Apple users...I am not a big fan of Apple) > > Are there other solutions this non-tech, non-Apple guy could use? > > Thank in advance! > > David F. Risch > 1981 40-2 > (401) 419-4650 (cell) > > _______________________________________________ > > > > Email > > address: > > CnC-List@cnc-list.com > > To change your list preferences, including > > unsubscribing -- go to the bottom of page > > at: > > http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com > > > > > _______________________________________________ > > Email address: > CnC-List@cnc-list.com > To change your list preferences, including unsubscribing -- go to the > bottom of page at: > http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com > > > > _______________________________________________ > > > > Email > > address: > > CnC-List@cnc-list.com > > To change your list preferences, including > > unsubscribing -- go to the bottom of page > > at: > > http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com > > > > _______________________________________________ > > Email > address:CnC-List@cnc-list.com > To change your list preferences, including > unsubscribing -- go to the bottom of page > at:http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com > > > > _______________________________________________ > > Email address: > CnC-List@cnc-list.com > To change your list preferences, including unsubscribing -- go to the > bottom of page at: > http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com > > >
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