XM Sat. Weather

G

Gene Morris

New member
I have an option on my plotter that allows me to access XM Weather. Does anyone here have experience with the service? I subscribed to the service but there is a problem with my software/hardware in receiving the data even though I am getting a strong XM signal. Garmin is sending me the new software update, hopefully that fixes the problem. If not I would like to know the worth of the service before I go to the trouble of sending my plotter to Garmin for the fix.

Gene Morris
 
XM has been bought by Sirius. Dunno what effect, if any, that might have. I assume it works in a similar manner to Sirius, which I have and recommend.

Warren
 
you might go to Raymarines website and look at the 4.25 software "new features". Most of 4.25 has to do with Sirius weather and from the literature it looks pretty good.
 
XM and Serius have agreed to the terms of a merger.
It must be approved by the Feds and there is significant opposition from the NAB, consumer groups and others. Not yet a done deal.

Serius and XM are saying there will not be compatibility problems if the merger goes through.

Phil
 
I have been aboard several boats with both the Sirius and XM weather. The information seemed to be accurate and complete. There were some suggestions that the XM nexrad images were delayed initially, but recent information suggests that has been fixed. The Sirius radar seemed to be very up to date.

All of this information is available on the internet if you are going on a day trip.

My personal feeling was it was not worth the cost of the service and reciever--in our part of the country the storms are visiable, radar tracks the storm cells well. AM radio static, visual/auditory gives a good idea of the distance off of lightning. (Lightning is available only on the more expensive $50/ month package)

I agree that the XM / Sirius issue is a bit up in the air, until the regulatory issues are settled and we see if both weather services are retained.
 
The XM is available on selected Garmin products, Sirius on the Raymarine, not sure of the relationship with the other mfgs. The only one I have hands on with is the XM/Garmin and it seems like it would be very nice for offshore sailboat racing, but the receiver and subscription are pricey. Even though we enjoy listening to Sirius on Wild Blue, we chose to not go with the weather service on our Raymarine E-series. The subscription runs $30-50/month additional, but does allow you to put it on "vacation" when you are not using it.

As Dr. Bob mentioned, we use our computer with a wireless broadband card to get up to the minute weather information. While going up the Florida east coast recently with thunderstorms visible ahead, we did use it that way to time it to go between cells. I am a true weather-nerd, but couldn't cost justify the additional $$$ for the satellite radio weather.

I would consider it a "nice to have, but..." option.

Best wishes,
Jim B.
 
Jim,

What internet site do you use for detailed weather? On the west coast we get weather patterns. Since we're going to be in the mid-west this summer, it like to find out where we can get detailed cell information, such as you mentioned.

Boris
 
I have a portable/fixed personal Sirius radio setup. It constantly goes silent when any tiny thing gets between it and the satellite - even a cloud. I also have the sat. receiver on my boat, but have not subscribed to the service yet.

I am wondering if others are suffering the constant interruptions that I'm getting on my entertainment radio on their weather or other Sirius receivers. What good would a weather receiver be if it went silent when there were clouds?

John
 
I have sirius, which is similar, and on the boat it works great. Actually, it works amazingly well. But sitting on the window sill at home, with a south facing window, my home antenna is problematic. On the boat it almost never loses signal. Recently I ran it up a v shaped canyon with rock walls on three sides, probably 500 to 600 feet high, and went clear to the end of the v with tall firs on the sides and it got signal all night. Clouds don't seem to affect it at all. I am beginning to wonder if there isn't a difference in the antennas. I use the little 1"X1" antenna on the boat, and just hang it out the forward hatch. At home the antenna is on a tilting mount and measures about 3"X3". I need to check that possibility out.
 
Thanks, Lloyds.... yes, I have the antenna outside a North window... I even put a horizontal stick out there to move it further away from the house, but still lots of interruptions. I can't put it on the South 'cause the stereo and all is on the North wall. Also, even the headset antenna gets alot of interruptions. The off and on has bothered me to the extent I don't even use it anymore.


John
 
Hi Boris,
I use the Weather Channel, Weatherbug.com (which has great info, including photos, of many local sites), WeatherUnderground, and AccuWeather. Pull up local radar and load the 3 hour history (updated usually within 6 minutes on some sites). You can track the individual cells. Many local community newspapers or tv stations have very good local weather observations. I tend to not trust weather forecasts more than 24 hours out, but will check them out to get a trend. I also like to look at national weather maps to get a feel of highs/lows/large lines of storms/movement/etc.
Listen to NOAA, but using all the above, I make my own forecasts. Brent and Dixie can attest to my passion with local weather. If the local conditions don't match up to the recent forecast, you at least have some idea what's going to happen.
HTH

Best wishes,
Jim B.
 
I must be missing something--the "Eye in the sky"--using the sprial antenna is $1995....The information seems to be mostly cloud cover--and I believe some thermal imaging. What satellite reciever is available for $199?

I have used HF fax and dedicated weather fax for planning when passagemaking and even in the PNW. This same material is available on the internet at:
http://weather.noaa.gov/fax/marine.shtml

For all NOAA products:
http://www.nws.noaa.gov/om/marine/home.htm#observations (including links to bouys, NexRad, Satellite images etc.)

For the live internet I like: Weather.com, Weather underground (for example going to Nexrad radar),

Of course there are the standard marine forcasts, and high seas forcasts which are also available on the internet.

An example of critical weather forcasting was when we were in charge of safety for the Optimist Dinghy National Championship (300 8 to 13 year olds in 8 foot sailing prams). We had one person watching the television and NexRad weather on the computer, a link to the control tower at the local airport and Navy base/Coast Guard, as well as marine radar both on 36 mile and 3 mile ranges. We had to get the kids off of the water if lightning strikes or storm cells were within 10 miles of the venue. One uses all of the modalities available.
 
HI thataway

When you have internet on board (sat Phone) it is easy ,but if not... :roll:

There are many VHF receiver in the 137 MHz for sale...

Well go on:
http://www.wraase.de/
Look under specials and you can get a very, very good receiver (MR-137)for 249 Euro with prof software... :thup :thup :thup
Or the MR-9202B for 95 Euro... :thup
And hundreds more on the internet... :)

Its very easy to make a sat antenna your self...
http://www.dxzone.com/cgi-bin/dir/jump2.cgi?ID=14606
http://www.david-taylor.pwp.blueyonder. ... efault.htm

With practice it is easy to see lightning on the sat picture, but
when I see a big system coming and the cloud temp is -50,
well I know it is better to hide...

My system is very expensive, yes,but it is a prof system... :D
I had at least 6 different systems from 199-3500 EUROs... :shock:
This is the best up til now... 8)

But, any scanner is capable to receive NOAA sats with free software...

Very good website about weather sat :
http://www.david-taylor.pwp.blueyonder. ... ipment.htm

Very good software:
http://www.david-taylor.pwp.blueyonder. ... signal.htm

As a Ham (I think I read you are a ham ?) you should know that :wink:

I don't say, that a sat system is the best, but when you know how to use it it is very, very, very good for predictin the weather, it just takes time to really know how to use it, thats all :wink:

Hell, I still find new things on my Photoshop software every day, and i am using it for years.... :wink:

Sorry, I was just telling my experience with the NOAA sat system,
I think it is a good compromise against the XM sat systems...

Regards chris
 
Chris, I don't think it is quite as simple as you make it seem. The reciever you mention is 249 Euro--or about $400 US. The average scanner will not work--it does not have a wide enough bandwidgh (40khz).
The Helix antenna is critical-- could I make a system which would work?--certainly--but as you point out I am a ham, who has built some of his own gear and understand circuits as well as antenna engineering. Then I have a satellite photo reciever--but as for the lightning--it is easier for me to be listening to static on an AM radio, watching cells on radar and counting the time from flash to sound--all while navigating the boat...rather than fooling with a computer, specialized antenna and reciever. I did see the 99Ero recievers--crystal controlled--and with the latest NOAA crystal frequency (recent change). Again, I am sure a fun thing to fool with--but I often have my hands full running at 25 knots or more in the Tom Cat....

All in all I think one can get equal or better information for the average boater from other modalities--which may include Weather Fax via HF, internet (some phones give the NexRad weather),

Most likely your expensive gear has a better resolution--but the satellite photos I have seen (including in these sites) are a bit hard to localize your specific location, especially in storm conditions. The Satellite technology is certainly excellent, but I suspect it is more than most C Bratts want to get into.

Thanks for the information--very interesting.....
 
Hi

Well, my system has a build in GPS witch will show my position in the sat picture, very simple :thup

Everything is automated so all you have to do is look on the screen... :D

Over NMEA you can do that to most of the weather sat software on the market, even the free one... :thup

Most of the scanners are good enough for NOAA, my Yaesu 5000 is pretty good for that...

Sure a dedicated system is always better....

regards Chris
 
Chris, The Yaesu 5000 is a good general purpose reciever (about $600)--but not the off the shelf Radio Shack scanner--I noticed that someone else in Germany is working in this same frequency range--and encountered a problem with bandwith...suggesting that the 40 mhz band width is a potential problem for good pictures. Also having a maping program which puts your GPS position in reference (accurately--and can map the cells in real time within several miles seems like a challange...
I found some issues mentioned on the internet with this--and am taking it to a private message, since there are tecnical details not of general interest to the forum members...
 
Dr Bob & Chris;

You guys are talking way above my head. I received the software update from Garmin today. After I installed it the weather info was made available. So far, just playing around with it, it looks great and very useful. My interest in the weather option is sea surface temps. Tuna fishing is reliant on knowing the sea surface temps. Cloud cover, sea surface temps, swell height and pressure gradients are overlayed on my plotter. XM & Garmin were very helpful and responsive.

Gene
 
If you have broadband wireless on your laptop on the boat and if you are in range (or from your home computer if you are just looking around), the best NOAA site is here:

http://nowcoast.noaa.gov/

It seems that all that this is the source for all the data that is
broadcast to the chartplotters via XM or Sirius.

It doesn't display on the chartplotter but it is free!!
 
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