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  • Sure glad I didn’t get a 433. Since it’s close to other frequencies I’m not sure if it will ever be as solid as 915. The main problem is that some countries restrict the use of 915.

  • DC, the better authority on this is Andrew Tridgell.  Read this forum post Andrew put up in April.  Either radios, when available,  should work well for you.  Hope this helps.   

  • The 3DR radio (SiLabs Si1000 chip radio) has better receive sensitivity, faster data rate, more transmit power, and is cheaper.  Xbees are very weak and buggy, just check the thousands of "problem with my xbee" posts here.

    The 3DR radio beats the Xbee on every conceivable spec, so there's no question which is better.  The Xbee does have FCC certification though, so if you're working on mass producing a commercial product it might be cheaper to use the Xbees.

    433mhz is not a good option at the moment, I'd go with the 915.

  • What is the data rate of the xbee compared to the 3DR? I have a new 3DR with default options and it seams a little slower than my old xbee?

  • Thanks Todd.

    I will probably pick up the 3dr 900mhz unit.

    I thought I read some where that a new 3dr radio was coming out but wasn't able to find the post on it. Does anyone have any info on this?
  • 3DR if they are in stock.  They are optimized for the APM and new users.  Will be a little easier to set up with the built in Mission Planner utility.  Personally I prefer modules in the 900mhz range.  Check out this link from sparkfun on the matter.  

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