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HomeHomeDiscussionsDiscussionsiFly General Di...iFly General Di...ADS-B or XM Weather does one update fater than the otherADS-B or XM Weather does one update fater than the other
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5/19/2012 4:04 PM
 
kentuckynet
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Joined: 5/19/2012
Posts: 1

Hello, im looking at replacing my bendix/king skymap 3c with possible the ifly 720 and skyradar but im trying to figure out which way to go?

Im not a big Garmin fan so lets get that out of the way. I like the bigger screens like the ifly and i understand airgizmos is coming out with a recessed type mount (which i would not consider the ifly without that)

All this being said i like the idea of free weather but is the one you pay for (xm weather) quicker as in updating than ads-b?

15 minutes seems like a lot could change?

Any help you could provide would certainly be appreciated.
 
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5/21/2012 9:09 AM
 
Walter
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Joined: 7/8/2009
Posts: 2778

I understand that ADSB weather is as good or better than XM in terms of data frequency. A new image is received every 5 minutes, depending on when the image was compiled I think the total lag should be 5 to 10 minutes. But even if it were 15 minutes lag, the idea is to give the pilot a feel for the size and direction of a storm front, you will want to give the entire thing a very wide berth - IMO.

Thanks,
Walter

Walter Boyd
President, Adventure Pilot
 
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5/22/2012 11:25 AM
 
Kevin
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Joined: 9/2/2010
Posts: 32

Having flown both, the update frequency is about the same. I think the ADSB loads quicker (at least in Tucson where I can receive the signal on the ground). The ability to animate the nexrad on the iFly with ADSB gives you a way to figure out cell movement that is not possible with XM.
 
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