XPost: sci.electronics.design, sci.electronics.misc   
   From: speffSNIP@interlogDOTyou.knowwhat   
      
   On Thu, 07 Mar 2013 12:49:27 +1000, the renowned Adrian Jansen   
    wrote:   
      
   >You are right, but seems like someone has solved the RF problems once   
   >for each of the useful bands, then its a piece of cake to interface with   
   >sensors and one end and display/alarm at the other.   
   >   
   >For an example, the tyre pressure monitor systems at 433 MHz.  10 gram   
   >package, including battery, you screw on a tyre valve.  Monitors tyre   
   >pressure and temperature for about 1-2 years of operation.  Reports real   
   >time, every minute or so, to in-car readout.   
      
   Frequently fails mechanically, causing loss of tire pressure, allows   
   tire shops to charge for a "rebuild kit" whenever they swap a tire,   
   requires a trip to the dealer (or specialized equipment/knowledge) to   
   replace, even with an OEM replacement part.. other than that, they're   
   just spiffy.   
      
      
   Best regards,   
   Spehro Pefhany   
   --   
   "it's the network..."                          "The Journey is the reward"   
   speff@interlog.com             Info for manufacturers: http://www.trexon.com   
   Embedded software/hardware/analog  Info for designers:  http://www.speff.com   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)