Goldak ML and MLX and EMS Marker Locator Comparison Chart

This comparison chart provides a visual overview of our article which compares the Goldak ML and MLX and EMS Marker Locators in greater detail

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What Do All of the Goldak ML and MLX Series EMS Marker Locators Have in Common?

Electronic Marker Systems (EMS) markers are a simple way to mark and locate underground utilities andstructures such as utility stub-outs, buried manhole covers, septic tank access covers, buried splices, surveypoints, utility trench paths, pipe and conduit endings, and much more. The Goldak ML and MLX Series EMSMarker Locators make finding those markers easier than ever. With a lightweight, foldable form-factor featuring asingle trigger and pistol grip, these locators are easy to use, store, and carry. The internal microcontroller provides precise locating performance. Other features include marker depth approximations, auto-shutdown and battery system monitoring


Completely Automatic: No Control Adjustments
Bar Graphs for Pinpointing and Indicating Marker Depth
Simple, Single-Trigger Operation (Click-On, Click Off)
Ergonomic, Lightweight Package
Collapsible, Easy-to-store
Robust and Distinct Audio Response When Detecting Marker
Easy-to-See LED Display
Continual Battery Status Indicator
Output Jack for Optional Headphones
Weight: 5 pounds Length: 33"
Batteries: 8 "AA” 1.5V Alkaline Cells Battery Life: 50 Hours
Warranty: One Year

What is the Difference Between the Goldak ML and MLX Models of EMS Marker Locators?

Both the Goldak ML and MLX EMS Marker Locators feature the same easy to use form factor and accurate microcontroller. The dierence is that while the ML models scan one dedicated frequency, the dual-frequency MLX models can scan two frequencies simultaneously.


1 What is Unique About the Goldak ML-1457 Water EMS Marker Locator?

  • Operates at a single frequency of 145.7 kHz
  • Will locate Blue Water markers

2 What is Unique About the Goldak ML-1216 Sanitary EMS Marker Locator?

  • Operates at a single frequency of 121.6 kHz
  • Will locate Green sanitary markers used for sewers, drainpipes, and wastewater

3 What is Unique About the Goldak ML-66 Reclaimed Water EMS Marker Locator?

  • Operates at a single frequency of 66.0 kHz
  • Will locate Purple reclaimed water markers

4 What is Unique About the Goldak ML-1698 Power EMS Marker Locator?

  • Operates at a single frequency of 169.8 kHz
  • Will locate Red Power markers

5 What is Unique About the Goldak ML-83 Gas EMS Marker Locator?

  • Operates at a single frequency of 83.0 kHz
  • Will locate Yellow Gas markers

6 What is Unique About the Goldak ML-77 Cable TV EMS Marker Locator?

  • Operates at a single frequency of 77.0 kHz
  • Will locate Orange/Black Cable TV markers as well as Orange Canadian Telephone markers

7 What is Unique About the Goldak MLX-SW Sanitary and Water Dual Frequency EMS Marker Locator?

  • Operates at two frequencies of 121.6 kHz and 145.7 kHz
  • Locates Green Sanitary and Blue Water Markers
  • Automatically and simultaneously scans for both types of markers

8 What is Unique About the Goldak MLX-GP Gas and Power Dual Frequency EMS Marker Locator?

  • Operates at two frequencies of 83.0 kHz and 169.8 kHz
  • Locates Yellow Gas markers as well as Red Power Markers
  • Automatically and simultaneously scans for both types of markers

9 What is Unique About the Goldak MLX-CT Cable TV and Telephone Dual Frequency EMS Marker Locator?

  • Operates at two frequencies of 77.0 kHz and 101.4 kHz
  • Locates Orange/Black Cable TV markers as well as Orange Canadian Telephone markers
  • Automatically and simultaneously scans for both types of markers

10 What is Unique About the Goldak ML-1014 Telephone EMS Marker Locator?

  • Operates at a single frequency of 101.4 kHz
  • Will locate Orange Telephone markers