I require a design (with list of components, specs etc) for a tag to be used for tracking running and bike races.
The idea would be for the tag to be fixed using a fabric band to the persons leg or wrist. The tag would transmit or otherwise send it's current location back to a central location directly to via an intermediate transmitter or via some other method.
The main specs/requirements for the tag are as follows:
* Rechargeable / Low power
* Will need to last for the duration of a race (Up to 6 hours with an option for a larger battery for longer races, or smaller batteries for shorter races to lighten the tag)
* Will need a large range, race routes can be very large >40km. This can be done through the use of repeaters or some other method.
Note this is for the design of the tag only, if you are also capable of designing and/or producing the tags once the design is complete let me know but bid only for the design work.