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The components for a 5-W ATV system can be purchased for $200,
                                excluding TV monitor and video camera. The video cameras on
                                Golem I are suitable for ATV use. Less-powerful ATV systems,  / 4
                                W, can be purchased for under $100.                       3
                                A Technician Class amateur license is required to operate these
                                systems legally in the United States. Currently the Technician Class
                                license no longer requires a knowledge of Morse code. Interested
                                readers should contact a local amateur radio club for more infor-
                                mation. Or you may write American Radio Relay League (ARRL),
                                225 Main Street, Newington, CT 06111, or call (800) 594-0200 or
                                (203) 666-1541 [fax: (800) 594-0259].
                                A 5-W ATV system can transmit up to a distance of 30 to 40 miles,
                                depending upon local radio interference, terrain, weather, etc.

                        More models

                                With the experience gained in building this T-bot system, the reader
                                can build other models. The company that makes the Erector Sets
                                has revitalized and updated itself and brought a number of inter-
                                esting kits to the market. The kits are called Meccano-Erector Sets
                                that  include  motors,  gears,  and  pulleys  along  with  the  standard
           212                  Erector Set materials.

                                There  are  standard  kits  for  building  trucks,  cars,  motorcycles,
                                land movers, etc. The kits provide a good springboard for building
                                exotic T-bot explorers. Kits are available locally through Toys R Us
                                dealerships.


                        Parts list for the telepresence robot
                                  (1) Miniature color camera with 2.4-GHz transmitter and
                                   receiver—$99.95
                                  (1) Optional battery pack—$19.95
                                  (1) Radio-control system proportional control [two-channel
                                   receiver, two-channel transmitter, Xtals, 2 servo motors (42-oz
                                   torque)]—$62.95
                                  (1) 1-ft length of Velcro material—$4.50
                                Parts are available from:
                                Images SI Inc.
                                39 Seneca Loop
                                Staten Island, NY 10314
                                (718) 698-8305
                                www.imagesco.com
                                                       Team LRN
            Chapter nine
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