5 - Watt (Loc3 Series)

The Loc3-5Tx broadband transmitter offers all frequencies between 98Hz to 200kHz, SD mode (Signal Direction), (8KFF) fault-find and an accurate resistance measurement up to 1M Ohm. The ruggedized and lightweight ergonomic design provides direct connection, signal clamp or induction mode and is protected against incoming voltages up to 240V. The LCD display with LED backlight displays output current, connection type, volts, resistance, frequency, volume, battery condition and high voltage warning.
If equipped with optional TX LINK, the transmitter can be remotely controlled by the vLoc3 series receiver. The range is typically 985 ft. (300m).
Output Current | 0.3 Amp (RMS constant current) |
Max. Output Voltage | 50V RMS |
Power Output | 5-Watt (< 45kHz) 1-Watt (> 45kHz) |
Output Channel | One (1) output |
Voltage Protection | Up to 240 VAC (external fuse) |
Batteries | (8) Alkaline D-cell or (Optional Li-Ion rechargeable) |
Induction | 8kHz to 200kHz (user selectable) |
Inductive Clamp | 8kHz to 200kHz (user selectable) |
Direct Connection | 98kHz to 200kHz (user selectable) |
Multi-Frequency Mode | (3) Three frequencies (any combination) |
Resistance Measurement (FFL) | 0 - 1M Ohms |
Included: | Loc3-5Tx transmitter, Conductive attachment leads (12') & ground stake |
10 - Watt (Loc3 Series)

The Loc3-10Tx broadband high power transmitter is the industry benchmark for 10 watt transmitters. The Loc3-10Tx offers high output current (up to 1,000mA RMS constant), making it perfect for long distance and deep pipe & cable locating. This transmitter offers all frequencies between 98Hz to 200kHz, SD mode (Signal Direction), (8KFF) fault-find and an accurate resistance measurement up to 1M Ohm. The ruggedized and lightweight ergonomic design provides direct connection, signal clamp or induction mode and is protected against incoming voltages up to 240V. The LCD display with LED backlight displays output current, connection type, volts, resistance, frequency, volume, battery condition and high voltage warning.
If equipped with optional TX LINK, the transmitter can be remotely controlled by the vLoc3 series receiver. The range is typically 985 ft. (300m).
Output Current | 1.0 Amp (RMS constant current) |
Max. Output Voltage | 50V RMS |
Power Output | 10-Watt (< 45kHz) 1-Watt (> 45kHz) |
Output Channel | One (1) output |
Voltage Protection | Up to 240 VAC (external fuse) |
Batteries | (12) Alkaline D-cell or (Optional Li-Ion rechargeable) |
Induction | 8kHz to 200kHz (user selectable) |
Inductive Clamp | 8kHz to 200kHz (user selectable) |
Direct Connection | 98kHz to 200kHz (user selectable) |
Multi-Frequency Mode | (3) Three frequencies (any combination) |
Resistance Measurement (FFL) | 0 - 1M Ohms |
Included: | Loc3-10Tx transmitter, Conductive attachment leads (12') & ground stake |
25 - Watt (Loc3 Series)

The powerful Loc3-25Tx transmitter is the go-to transmitter for problematic deep pipe & long distance pipe & cable locating. Also its perfect for finding holidays on coated pipelines. The smaller Loc3-25Tx is perfect for gas distribution applications.
In addition to the above applications the Loc3-25Tx features high current-single frequencies making this transmitter the best solution for extreme deep pipe applications.
The Loc3-25Tx is built on a rugged, ergonomic IP54 housing and is lightweight (only 7.05lbs). This transmitter provides consistent current output up to 4.0 Amps peak.
If equipped with optional TX LINK, the transmitter can be remotely controlled by the vLoc3 series receiver. The range is typically 985 ft. (300m).
Key Features of the Loc3-25Tx Transmitter
- 4.0 Amp peak current output
- 130 Volts peak output
- Light and portable for everyday use
- ELF and Low frequencies for minimum distortion
- Includes all PCM & PDCM frequencies
- Single frequencies for deep pipe locates
- Signal clamp compatibility
- Li-Ion rechargeable battery
- Heavy duty AC charger can be used to power the transmitter while simultaneously charging battery.
Output Current | A maximum current output of 4.0 Amp RMS (up to 25 watts) |
Output Voltage | 130V RMS |
Voltage Protection | Up to 230 VAC (external fuse) |
Batteries | Li-Ion rechargeable battery (25-watt/2-hours) / (10-watt/6-hours) |
Frequencies | 20Hx to 9.82kHz (including all PCM & PDCM frequencies) |
Included: | Loc3-25Tx transmitter, Conductive attachment leads (10'), Ground stake, Li-Ion battery tray, DC/AC Power supply for battery, Carry bag & Vehicle DC power supply |
150 - Watt
The Loc-150Tx Transmitter is a high-powered unit which makes long range signal detection possible up to 20 miles (32km). The flexible power requirements enable it to utilize the variety of supplies available at most transformer rectifier stations. This allows the transmitter to provide its full 150W of output power over prolonged periods, without costly battery replacements. Hookup is a simple four wire connection procedure. The transmitter is compatible with both distribution and transmission networks.

Output Current | A maximum current output of 4.0 Amp RMS (up to 150 watts) |
Output Voltage | 120V RMS |
Voltage Protection | Up to 250 VAC (external fuse) |
Batteries | None (use 120VAC mains or 12-50VDC from rectifier) |
Frequencies | 512Hz and 8.19kHz |
Included: | Loc-150Tx transmitter, Conductive attachment leads (10'), DC input lead (10') & Output mains plug (9') |