Abstract: A remotely controlled transporter for moving a new line across an existing cable strung over a natural or manmade barrier. The transporter includes a forward drive wheel engaged beneath the strung cable and a rear drive wheel engaged above the strung cable. In one embodiment, the counter-rotating drive wheels are driven by a chain drive connected to a main drive gear which receives its power from a motor drive shaft. The center of gravity of the transporter is located below and behind the midpoint of an imaginary line between the shafts of the two drive wheels so that the weight of the transporter generates a torque which urges the drive wheels into contact with the strung cable, thereby providing traction for the drive wheels.