Radiodetection RD7200 vs RD8200 vs RD8200SG: What’s the Difference?

When it comes to underground cable and pipe locating, Radiodetection has built a trusted reputation for delivering precision, reliability, and innovation. But with multiple models in their lineup, how do you know which one is right for your job?

In this blog, we compare three of the most popular Radiodetection locators:
RD7200, RD8200, and RD8200SG – helping you understand their key differences and ideal applications.

Why Accurate Locating Matters

Before diving into the details, it’s important to understand why choosing the right locator matters:

• Prevent damage to underground services during excavation
• Ensure safety for workers and the public
• Comply with regulations such as Dial Before You Dig (DBYD)
• Boost efficiency and reduce time spent on site

Now let’s break down each model and see how they compare.

1. Radiodetection RD7200: The All-Rounder

The RD7200 is a professional-grade locator designed for utility contractors, technicians, and locating teams that need reliability, accuracy, and simplicity in one robust package.

Key Features:

• Multiple active frequencies (Power, Radio, 512Hz – 200kHz)
• Automatic and manual gain control
• Compass orientation display
• Depth and current measurement
• Peak and Null Modes
• Lightweight and ergonomic design
• Self-test and calibration reminder

Ideal For:

• General contractors
• Telecoms
• Power utilities
• Local councils

Why Choose the RD7200?

If you need a dependable locator that balances accuracy with ease of use, the RD7200 is a solid choice. It's built for everyday use in tough environments and provides all the core features you need.

2. Radiodetection RD8200: Advanced Accuracy and Data Logging

The RD8200 builds on the RD7200 platform with enhanced performance, multi-frequency tracking, and integrated GPS, making it suitable for teams who demand high-end precision and full data traceability.

Key Features (in addition to RD7200):

• Integrated GPS – log location of every locate (RD8200G)
• Usage logging – capture data for audits and compliance (RD8200G)
• Current Direction (CD) – identify individual utilities in crowded areas
• More Active Frequencies than the RD7200 - offers more versatility on a wide range of services
• TruDepth™ technology – ensures depth readings are only displayed when the locator is correctly oriented
• StrikeAlert™ – warns of shallow utilities
• Customizable frequency and mode settings

Ideal For:

• Utility service providers
• Engineering consultants
• Asset managers
• Professional service locators

Why Choose the RD8200?

If accuracy, traceability, and GPS logging are crucial, the RD8200 is the model to go for. It's perfect for regulated environments or utility networks that require complete records of underground locating activity.

3. Radiodetection RD8200SG: The Specialist’s Choice with Survey-Grade GPS

The RD8200SG (Survey Grade) is the flagship model in the Radiodetection range. It takes everything from the RD8200 and integrates survey-grade GNSS technology, making it the ultimate solution for mapping, geotagging, and advanced utility locating.

Key Features (everything in RD8200 plus):

• Survey-grade GNSS positioning (1-2 cm accuracy)
• NMEA 0183 data output – integrates with GIS mapping software
• Dual Bluetooth connectivity – connect to external GNSS receivers and mobile devices
• Advanced data capture and reporting tools
• Compatible with RD Manager™ software for analytics and compliance
• Optimized for GIS workflows

Ideal For:

• Professional locators and surveyors
• Utility mapping specialists
• GIS data collection teams
• DBYD-certified contractors in complex environments

Why Choose the RD8200SG?

For those needing precise geolocation and mapping, especially in regulated or GIS-integrated workflows, the RD8200SG offers unmatched accuracy and reporting.

Feature Comparison Table

Conclusion: Which Locator Is Right for You?

• Choose the RD7200 if you need a dependable, cost-effective locator for general utility work.
• Upgrade to the RD8200 if your projects require compliance documentation, GPS logging, and precision in complex environments.
• Invest in the RD8200SG if you're working in GIS, surveying, or high-end mapping where sub-meter GPS accuracy and data output are essential.

Ready to Buy or Want Expert Advice?

Looking for pricing or an expert consultation on the Radiodetection range?
Visit Testrix Systems – Australia’s trusted supplier of professional underground locating solutions.

Ask about training packages, BYDA accreditation support, and bundle deals with transmitters and accessories.