I just installed a GX2200 VHF with GPS, belowdeck, works perfectly. As Fred
mentioned, the receivers on these are not your father's receivers. OK, maybe
l'm paraphrasing a little .One fellow on cruising forum said he had one
functioning in a pilot house of aluminum. But my note 4 still requires me to
hold it to a window to find itself at home or in the shop.
Bill Coleman
-------- Original message --------
From: Tim Goodyear via CnC-List <[email protected]>
Date: 10/03/2015 7:28 PM (GMT-05:00)
To: [email protected]
Cc: Tim Goodyear <[email protected]>
Subject: Re: Stus-List IPad Question...
Jerome, practical experience from several sources is very different to what you
suggest. It works.
Tim
> On Oct 3, 2015, at 6:11 PM, Jerome Tauber via CnC-List
> <[email protected]> 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. 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 <[email protected]>
> To: cnc-list <[email protected]>
> Cc: Rick Brass <[email protected]>
> 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:[email protected]] On Behalf Of Jerome
> Tauber via CnC-List
> Sent: Friday, October 02, 2015 11:27 AM
> To: [email protected]
> Cc: Jerome Tauber <[email protected]>
> 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 <[email protected]>
> To: CnClist <[email protected]>
> Cc: Dennis C. <[email protected]>
> 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
> <[email protected]> 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
>
>
>
>
>
>
>
> Digital Yacht NavLink NMEA 200 Wireless Data Server
> by Digital Yacht
>
> List Price: $833.92
> Price: $495.77
> You Save: $338.15 (41%)
> Ships from and sold by OJ Commerce.
>
>
>
>
>
>
>
>
>
> Digital Yacht NMEA to Wireless Wi-Fi Adapter - 4800 Baud
> by Digital Yacht
>
> List Price: $458.92
> Price: $280.37
> You Save: $178.55 (39%)
> Ships from and sold by OJ Commerce.
>
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>
>
>
>
>
>
>
> 1 - Digital Yacht iNAVConnect Wireless Wi-Fi Router
> by Digital Yacht
>
> Price: $232.67
> Ships from and sold by TheFactoryDepot.
>
>
>
>
>
> -----Original Message-----
> From: David via CnC-List <[email protected]>
> To: CNC CNC <[email protected]>
> Cc: David <[email protected]>
> Sent: Fri, Oct 2, 2015 10:37 am
> Subject: Stus-List IPad Question...
> OK...so I have this IPad I never use. 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)
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