Leica DA300 1-Watt Signal Transmitter

DD120 vs DD130 vs DD220 vs DD230

A side-by-side breakdown of the full Leica DD locator lineup — what each model adds, what modes it supports, and which applications it handles best. Helps you understand exactly where the DD300 sits in the family.

Inspecting a Manhole — Trace Rod

Watch how a Trace Rod is deployed into a manhole to trace non-metallic utility services. Demonstrates the real-world process of pushing the rod through non-conductive pipes and locating them from the surface with an EM locator.

Inspecting a Manhole — Sonde Locating

A practical demonstration of sonde locating through a manhole access point. Shows how a sonde transmits its signal through non-metallic pipe and how the DD locator pinpoints it from above ground — critical technique for sewer and drain work.

Signal Transmitter — Connection Guide

Step-by-step guide to connecting the DA175/DA300 signal transmitter to a buried service for active locating. Covers direct connection, inductive coupling, and best practices for getting a clean signal on the target line.

Using the DA175 Transmitter with the DD120

A short, focused overview of the DA175 signal transmitter paired with the DD120 locator for active locating. Covers depth estimation, frequency selection, and how to confirm you're on the correct target service.

Leica DD300 CONNECT — Full Overview

The official overview of the DD300 Connect utility locator — GPS, Bluetooth, data logging, Digital Trim, and the full frequency range including 83 kHz and 131 kHz exclusive to the DA300 transmitter. See the complete feature set in action.

Leica Utility Detection — Introduction

An introduction to Leica Geosystems' utility detection product line — what electromagnetic locating is, why it matters before any ground disturbance, and how the DD series fits into a professional locating workflow.

Leica DD120 Depth Package — In the Box

A walkthrough of the DD120 Depth Package contents — locator, DA175 transmitter, carry bag, and accessories. Shows how the full kit comes together and what each component does in a real active locating workflow.