The Radiodetection CAT4+ underground cable avoidance tool/underground service locator delivers highly refined locate capabilities, specifically designed to help the operator find more buried utilities. The CAT4+ Avoidance Mode™ lets the operator check an intended excavation area for Power, Radio and Genny signals, and pinpoint located utilities in a single scan. Features such as the bargraph ‘tidemark’ enable an operator to quickly spot a peak response and zero-in on a buried conductor.  

The Genny4 Signal Generator provides simultaneous dual-frequency locate signal output. Alongside the familiar 33kHz locate signal for general purpose locates, the Genny4 transmits a second higher frequency designed to facilitate location of small diameter cables such as telecoms and street lighting, including spurs. For tricky locates, the power boost function enables the locate signal to travel further and deeper, and couple onto utilities more easily. A signal boost function allows the CAT4+ signal to travel further and deeper for difficult locates. The supplied 100mm inductive clamp allows the operator to clamp over a service without interruption to the supply at any point along it's path. The Genny4 can even work in wireless inductive mode, which involves placing the transmitter on the ground over a cable and allowing wireless coupling of the signal onto the buried service.

The CAT4+ is supplied as a complete kit in a carry bag, comprising of a Genny4 transmitter, a receiver, direct connection leads, earth stake and  inductive signal clamp.

Dig More Safely -

The Radiodetection CAT4 proprietary StrikeAlert™ warning, warns of shallow buried utilities. The CAT4 guides users towards better and safer working practices through its Service Due date warning. CAT4 is a safety-critical precision instrument and the optional 30-day countdown to the Service Due date, CALSafe™ and innovative eCert™ on-line system calibration validation capabilities are designed to reinforce company and recommended service policies


  • Multiple Operating Modes:

Avoidance Mode - for rapid scanning and locating, simultaneously searching for power, radio and Genny signals all at the same time.

Genny Mode - Detects the signals transmitted by the Genny4, with on demand estimation of the depth of buried services (direct coupling and inductive mode)

Power Mode - Detects the electromagnetic fields generated by live cables

Radio Mode - Detects long range radio signals as they travel along buried cables or pipes

  • Small Cable Locate - Dual-frequency locate

Simultaneous dual frequency and simple locating methods assist CAT4 and Genny4 users to locate Small Diameter cable such as telecom twisted pairs, CATV feeds, spurs and drop-offs which have historically been hard to find and are a common strike risk

  • Dynamic Overload Protection

Radiodetection’s unique digital signal processing capabilities equips the C.A.T4 with the ability to reject electrical interference. Dynamic Overload Protection gives CAT4 series products the ability to continue operating in electrically challenging areas, such as near substations and under power cables, where other locators’ detection circuitry may be overloaded and no longer function.

  • Easy and Low Cost Remote Calibration

Using the eCert™ technology, the CAT4 underground cable and pipe locator can be easily calibrated at a fraction the cost of other locators without even sending it to a service facility. Using an internet connection, the eCert™ will provide an assessment of the unit's hardware and software using a link via a PC, and can be used to extend the validity of the calibration certificate on demand, with no downtime. The user can print or save a calibration certificate for their locator. A complete service backup is also provided here.

  • Avoidance Mode™ 

Sweep an area using Power, Radio and Genny signals simultaneously, saving time. CAT4 lets operators control the sensitivity of each mode/signal, enabling buried utilities to be pinpointed in a single pass, while Real Sound provides audio feedback derived directly from the utility located, easing identification to maximise speed whilst maintaining safety. 

  • Genny4 Signal Boost

The Genny4 offers, alongside its standard power mode, a Signal Boost feature which increases the output signal by up to 10 times allowing you to locate over extra distance and depth.

  • High Visibility Display with Backlight 

The CAT4’s high visibility display helps to minimise the possibility of misreading critical information from the unit. The high contrast and automatic backlight illumination provide optimum visibility in all light conditions.

  • Straightforward Operation

The CAT4 is a simple to use underground cable and services locator with features designed to make the operator's job as easy as possible. All CAT4's are reverse compatible with Genny3 accessories.