Originally Posted by tonyn1
I don't think they had the NavWeather last time I checked into this. They had only the WX service which is still $99 a month. I guess it has a lot more data useful to pilots. With the NavWeather, that pricing is in the affordable range, so I'll have to look into it. I looked up the GXM30 and that is what's called a smart antenna and will cost around $200 but I looked up the 2820 on Garmin and the specs don't say that it is NavWeather compatible, only NavTraffic compatible. Does it somehow become that way by adding the GMX30? If so, the thing plugs into a USB port, so how is the unit going to maintain its waterproof qualities with that plugged in? Also both the Zumo 550 and 660 don't have this capability listed either. Why not for such a useful feature? Why don't they freakin build a unit that has it all?
I have a 2730, which is a predecessor of the 2820. The GMX30 was included in the price of the 2730. I just checked my XM subscription & according to XM, the 2730 is capable of NavWeather, NavTraffic, XMWX Marine, XMWX Aviator & WMWX Ground.
I have never had any problems with the usb connection & water. The radio is rated to the IEC 529 IPX7 standard for weatherproofing.
According to this page, Zumo 550 does support XM Navtraffic ( click on the specs tab)
The GMX 30 is also listed as an accessory for the unit. When you plug in the GMX 30 & activate the proper subscriptions, you should be able to get XM, XM NavTraffic as well as NavWeather.
Just to be sure, I would contact Garmin as well as XM to make sure the Zumo 550 does indeed have these features. It wouldn't be the first time someone has made a mistake on a website.
I was surprised to find that the Zumo 660 did not support the GXM30, nor was it Navtraffic compatible.