Prototek Sondes
Precision Locating for Every Underground Challenge.



Prototek offers a diverse range of sonde transmitters designed to meet various underground locating needs. These transmitters emit specific frequencies that can be detected above ground, allowing professionals to accurately trace and map the paths of non-metallic pipes, conduits, and other underground utilities. Each model is tailored for particular applications, ensuring optimal performance in diverse environments.
Model | Frequency | Dimensions (W x L) | Battery Requirements | Potential Use Cases |
---|---|---|---|---|
ATP-12 | 223 kHz | 1.25" x 2.25" | Non-replaceable | Locating in non-metallic lines and septic tanks. |
FTP-8 | 512 Hz | 1.1875" x 2.25" | Non-replaceable | Locating in cast iron and non-metallic lines, including septic tanks. |
HTP-15 | 8 kHz | 1.25" x 2.25" | Non-replaceable | Locating in non-metallic lines and septic tanks. |
FD-10 | 512 Hz | 0.75" x 3.875" | 1 AAA Alkaline | Locating in cast iron and non-metallic lines; suitable for lines 1.5 inches and up. |
FD-20 | 512 Hz | 1" x 4.5" | 1 AAA Alkaline | Locating in cast iron and non-metallic lines; suitable for lines 2 inches and up. |
FD-40 | 512 Hz | 1.25" x 6.375" | 2 AAA Alkaline | Locating in cast iron and non-metallic lines; suitable for lines 4 inches and up. |
HD-40 | 8 kHz | 0.75" x 4" | 1 AAA Alkaline | Standard sonde for locating empty ducts; suitable for lines 1.5 inches and up. |
HD-80 | 8 kHz | 1.25" x 6.375" | 2 AAA Alkaline | Locating in non-metallic lines; suitable for lines 4 inches and up. |
LD-9 | 16 Hz | 1" x 7" | 3 AAA Alkaline | Locating in ductile iron or steel pipes; suitable for lines 4 inches and up. |
LD-14 | 16 Hz | 1.25" x 9.75" | 4 AA Alkaline | Locating in ductile iron or steel pipes; suitable for lines 6 inches and up. |
FM-05 | 512 Hz | 5/8" x 2.25" | 1 357/LR44 | Locating in small lines and P-traps; suitable for lines 3/4" and 1-1/4" P-traps. |
Each Prototek sonde is engineered for durability and reliability, ensuring accurate and efficient underground utility locating across various materials and conditions. For optimal performance, it's recommended to use these transmitters with compatible Prototek receivers or other receivers capable of detecting the specified frequencies.
