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True Ladder Line and Wire Antennas

StepperTune-ATU Remote Controller


StepperTune Features:
--Designed To Control Two Stepper Motors For Controlling A Remotely Located Antenna Tuner.
--May Remotely Control Tuning Capacitor For Magnetic Loop.
--Control Cable May Be CAT5 Cable Up To 200 ft while Using A 12 Volt Power Supply.
--Cable Lengths Greater Than 200 ft May Be Realized Using A Supply Voltage Up To 24 Volts DC.
--Eight Memory Locations For Both Steppers.
--Auto Band Memories For Auto-Band Change From Icom Transceivers.
--Automatic Antenna Tuning Capable With External Specified Directional Coupler Connected.
--Stepper Motor Current Control and Stepper Motor Current Displayed. Capable Of Up To 2 Amps of Stepper Drive Current.
--Stepper-Over Current/Over Temp Shutdown Protection.
--“Jog Mode” To Easily Fine Tune Either Stepper Motor.
--Stepper Motor Speed Easily Programmed.
--Limits Set In Software To Limit Travel
This Controller Is Capable Of Driving Two Stepper Motors Over 8 Conductor Cable (typically CAT5 cable).  Current Control Is Necessary To Protect The Stepper Motors.  The Display Shows Stepper Motor Position In Terms Of Step Number And Current Used For The Latest Stepper Motor Movement.  This Unit Is Extremely Accurate And Re-Settable.  It Utilizes Replaceable H-Driver Modules Which Are Current And Temp Protected.  I Have Been Using This Controller For Four Years With 100% Functionality at the EMF Ranch.  See full Description and Manual download at  Gary, K7EMF