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MS27102A Remote Spectrum Monitor

MS27102A Remote Spectrum Monitor

The Remote Spectrum Monitor MS27102A is designed to both mitigate interference problems and identify illegal or unlicensed signal activity. It is a full-featured platform for monitoring and recording signals in user-specified frequencies and is capable of sweep rates up to 24 GHz/s, enabling this probe to capture many types of signals including periodic or transient transmissions as well as short “bursty” signals. The 20 MHz instantaneous FFT bandwidth available on the Remote Spectrum Monitor MS27102A provides the ability for wideband, real-time captures of signal activity for subsequent post-processing. IQ captures can be recorded both in block mode or streamed. A “save on event” feature is also provided to capture spectrum measurements only when certain user-specified thresholds are violated, which saves memory space since only signals of interest are captured and recorded. The Remote Spectrum Monitor MS27102A is offered in a weather-proof IP67 enclosure for outdoor mounting in the harshest of environments, and comes standard with one RF Input, although a second port can be optionally added for use with two antennas.

MS27102A Remote Spectrum Monitor


  • 9 kHz to 6 GHz
  • Sweep speed up to 24 GHz/s
  • Integrated web server to view, control, and conduct measurements via a web browser (both Chrome and FireFox supported)
  • Remote firmware update capable
  • Watchdog timer to insure long-term stability for remotely deployed monitors
  • IP67 rated for outdoor deployments
  • Linux operating system
  • Low spurious signals for accurate signal discovery
  • 20 MHz instantaneous FFT bandwidth
  • Low power consumption <11 watts (input voltage 11 to 24 VDC)
  • Integrated GPS receiver for monitoring location and time synchronization applications
  • Gigabit Ethernet available for high-speed transmissions
  • Interference analysis: spectrogram and signal strength
  • Dynamic range: >106 dB normalized to 1 RHz BW
  • DANL: < -150 dBm referenced to 1 Hz RBW, preamp on
  • Phase noise: -99 dBc/Hz @ 10 kHz offset at 1 GHz
  • IQ block mode and streaming with time stamping for TDOA applications
  • Vision software optional for automated spectrum measurements, setting alarms and geo-locating signal sources

Designed for outdoor environments, these probes are typically positioned in a permanent or semi-permanent location for radio surveillance and monitoring. Government regulators often use outdoor monitors for enforcing spectrum policies. A typical use case might be using the 20 MHz instantaneous FFT bandwidth capability for capturing the entire FM radio band (88 MHz to 108 MHz). Users could then examine each frequency band for illegal broadcasts. Other applications include:

    • Spectrum occupancy measurements
    • Monitor jails/prisons for illegal broadcasts
    • Security at military facilities, national borders, utilities, airports, etc.
    • Spectrum monitoring associated with RF lab testing
    • Detection of unlicensed or illegal transmitters
    • Positive Train Control (PTC)
    • Detection of illegal or unlicensed AM/FM/Cellular broadcasts
    • Sensitive site monitoring (national borders, military facilities, nuclear power plants…)
    • Airport monitoring (with communication frequencies often adjacent to FM bands)
    • Monitor jails/prisons for illegal broadcasts
    • Positive Train Control (PTC), insure clear communication channels for trains
    • Cable TV, to mitigate leakage to outside environment and leakage into cable system
    • Government regulators enforcing spectrum policies