RF-Design Satellite Transponder Monitor stm3G

The stm3G is a high-performance, compact and rack-mountable selective RF power monitoring unit, specifically developed for monitoring the power levels of individual satellite transponders in 3GHz and in the L-band range.

Based on the proven hardware design of the RF-Design PwrM3G, this enhanced version adds the capability for precise, selective power tracking of defined carrier frequencies.

Unlike the standard PwrM3G, which provides total input power readings, the stm3G supports frequency-selective monitoring of individual transponders. This includes:

• Carrier-specific threshold alarms
• Min/Max level tracking
• True spectrum-based visualization
• Long-term trace with charting and export

Key Features

• Selective transponder monitoring in the 50–3000 MHz
• Multi-channel power measurement for up to 30 transponders simultaneously
• Real-time analysis with individual Min/Max tracking per transponder
• Spectrum view and bar chart modes for flexible visualization
• Per-transponder threshold alarms, fully configurable
• Long-term trace & logging with real-time graphical view and CSV export
• User interface via Windows application or future web-based UI
• 1RU/19” chassis with integrated power supply and 4 port Ethernet switch
• Offset compensation for cables and directional couplers