Model M-331

MINI RFI LOCATOR

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The M-331 Mini Locator delivers interference detection in an ultra-portable design.
Purpose-built for field crews, it integrates a high-sensitivity receiver, calibrated LCD signal meter, speaker, and four-element Yagi antenna into one handheld unit. Optimized for gain and directional accuracy, the M-331 enables technicians to quickly pinpoint sparking power line hardware that disrupts radio, television, and data signals.

By scanning lines and tracking peak noise readings in decibels, the M-331 makes pole-to-pole comparisons fast, accurate, and repeatable. A frequency/RF gain control, digital ignition filter, and selectable dB readouts ensure precise measurements in varied environments. Built to resolve interference affecting communications, broadcast, and broadband systems, the M-331 equips crews to restore signal integrity whether the source is an arcing hot clamp, leaking lightning arrestor, or cracked insulator.

Features
  • Integrated high-sensitivity receiver with four-element Yagi antenna
  • Calibrated LCD signal strength meter with selectable dBm, dBmV, or dBµV readout
  • Frequency and RF gain control
  • Digital ignition filter
  • Built-in speaker and headphone jack for audio monitoring
  • Volume control for adaptable field use
  • Operates on a single 9V alkaline battery
  • Lightweight design under 2 lbs with included carrying case
Specifications
  • Type: RFI Locator
  • Frequency: 320 – 340 MHz
Mechanical Dimensions
  • Dimensions: 18.5″ x 25.5″
  • Weight: Less than 2 lbs
Power Source
  • One 9V Battery