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ERC Version 4 USB FACTORY ASSEMBLED with built PC board, cables, complete installation instructions, CD with calibration and operation software.

Includes all components to install it inside rotor controller.

Unlike the kit version, this version does not need a DC power cable as it is powered by the USB port.

  • USB cable
  • Instructions how to build and use ERC Version 4 USB.
  • Installation guide for more than 90 rotators.
  • Software Service Tool (Windows XP/Vista/7/8/10 32 and 64 bit) for configuration and calibration.
  • Rotor Control Software (Windows XP/Vista/7/8/10 32 and 64 bit).



  • PC board size : 3.15 x 2.4 inches (80 x 61 mm)
  • DC supply voltage : 5 volts, supplied by USB connection, max 140mA
  • Operating temperature : 0 to 70° C
  • Software driven calibration
  • Full support for rotators with overlap up to 180°
  • Extended calibration every 30° to compensate non-linearities of the rotator feedback voltage
  • Security stop, if the rotator does not move

Relay circuits:

  • CW/CCW : each 2xON/OFF (DPDT) max 50VAC/3A or 30VDC/2.5A
  • AUX : 1xON (SPST) max. 250VAC at 3A

Communication port: USB (FTDI-chip), Baud rate configurable 4800-9600-19200-38400

ERC is compatible to a subset of the following protocols:

  • Hygain DCU-1 with extension for position feedback
  • Yaesu GS232A
  • Yaesu GS232B