Versions:
PstRotator 17.71 by YO3DMU is a specialized amateur-radio utility designed for precise AZ/EL antenna positioning, enabling operators to track low-Earth-orbit satellites, the Moon, and NASA Deep-Space Network beacons on VHF, UHF, and SHF bands. The program implements separate azimuth and elevation control channels, allowing it to drive either two independent rotor boxes—one for azimuth and one for elevation—or a single combined AZ/EL rotator interface. Communication with the controllers is handled through standard RS-232 serial lines or USB-to-serial converters, with any available COM port selectable from within the graphical interface. Once the hardware is connected, the software continuously calculates and updates target positions using built-in orbital elements, lunar ephemeris, or DSN schedules, then sends real-time correction pulses to maintain accurate pointing as the object moves across the sky. Typical use cases include EME (Earth-Moon-Earth) contacts, linear-transponder satellite QSOs, and weak-signal troposcatter experiments where even a degree of pointing error can drop signal levels below the noise floor. Because the application maintains a small memory footprint and low CPU load, it can run alongside digital-mode software or logging suites without degrading receiver performance. The single-version release, 17.71, ships with an updated satellite database, improved Doppler tracking for fast LEO passes, and refined calibration wizards that reduce initial setup time for new rotator combinations. PstRotator is available for free on get.nero.com, with downloads delivered through trusted Windows package sources such as winget, ensuring users always receive the latest build while supporting batch installation alongside other applications.
Tags: