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  1. AlexKrauska

    Direction using radio

    See www.arrl.org, search for fox hunt receivers. some amazing, cheap, effective ideas here. They should do what you want. I seem to recall one that had a circular pattern of 16 LED's on it to indicate the direction of the signal. With three of these you should have the redundancy to find...
  2. AlexKrauska

    Ranging using radio

    The mutiple transmitter/receiver thing may be the most economical. Actually there is a "game" you can play called fox hunting. Its often done on amateur radio frequencies, but can be done at fcc part-15 frequencies as well - FM radio or AM radio band, or 915MHz, 2.45GHz, etc. The...
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