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	RFID and Logistics Management Part 3 of 4
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	The RFID Frequencies Bands Frequency band allocation for the use of radio devices is regulated by federal agencies such as the FCC in the U.S., PTT in Germany, and so on. There are limitations to the bands available within which RFID systems can function. However, several bands have evolved through­out the spectrum where you will find these systems in use. There are definite tradeoffs to consider for each band. Therefore, it is important to understand the application requirements before selecting a particu­lar type of RFID system Comparing Frequencies Low frequency Below 500 kHz Short to medium range Medium data rate Not orientation sensitive Reads through non-metallics Low power levels Inexpensive Noise sensitive     The RFID Frequencies Bands Frequency band allocation for the use of radio devices is regulated by federal agencies such as the FCC in the U.S., PTT in Germany, and so on. There are limitations to the bands available within which RFID systems can function. However, several bands have evolved through­out the spectrum where you will find these systems in use. There are definite tradeoffs to consider for each band. Therefore, it is important to understand the application requirements before selecting a particular type of RFID system. The design approach to the implementation of the technology differs according to the performance requirements of the application. Performance Requirements/Attributes The list includes read range penetration centralized versus distributed form factor memory capacity collision avoidance speed/data rat security line-of-sight interoperability cost. The Art of Antenna Patterns The electromagnetic field pattern where the transponder is read is highly affected by such things as the size and shape of the readout antenna and the orientation of the transponder as it passes through the field. There is really an art to designing readout antennas to suit the needs of an application. (See figure 3.) APPLICATION PROFILE—CHEVROLET Chevrolet Creative Services—Trade Show Equipment Management •      Inventory control and tracking of 3,500 crates at the warehouse. •      Each crate uniquely ID'd with a tag. •      Read by in-floor antennas at dock doors. •      ID compared to manifest held in host database. If ID matches database information, a green light signals "go" to ship crate. No match activates a red light. Crate shipments in and out (time/date stamped) are automatically recorded. Benefits APPLICATION PROFILE—LULLIGAN FLOWER EXCHANGE Product Inbound Logistics and Trading Floor Automation •      Lulligan Flower Exchange, world's first auction house for potted plants. •      During peak auction hours, 5,000 man-high containers each carry­ ing hundreds of plants traverse the bidding area on tracks at a rate of up to 30 a minute. •      200 buyers jostle to bid. •      Lot number flashes to auctioneers/buyers. •      Buyers also tagged. •      Delivered plants:         -      get graded and catalogued        -      loaded to tagged rolling containers        -      rolled to auction bag. Benefits   •      One hour saved each day in sorting/identifying plants. Two fewer workers needed for administration. •      Auction error rate gone to zero. •     Buyers able to make clearer decisions. •     Auction house able to be more flexible. •     Flower shop customers receive orders faster. To Be Continued STAY CONNECTED To stay current on Lean Management Basics and Best Practices, subscribe to our weekly MBBP Bulletin... and we'll send you our PowerPoint presentation, "Introduction to Kaizen Based Lean Manufacturing™." All at no cost of course.    First Name: Your E-Mail:  Your personal information will never  be disclosed to any third party. privacy policy Here's what one of our 13,000 plus subscribers wrote about the MBBP Newsletter: "Great manufacturing articles. Thanks for the insights. I often share portions of your articles with my staff and they too enjoy them and fine aspects where they can integrate points into their individual areas of responsibilities. Thanks again."                Kerry B. Stephenson. President. KALCO Lighting, LLC "Back to Basics" Training for anyone ... anywhere ... anytime Business Basics, LLC 6003 Dassia Way, Oceanside, CA 92056 West Coast: 760-945-5596  © 2001-2009 Business Basics, LLC