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Tecsolutions Consultants LLC
Tecsolutions Consultants LLC

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.


ModelFrequencyDimensions (W x L)Battery RequirementsPotential Use Cases
ATP-12223 kHz1.25" x 2.25"Non-replaceableLocating in non-metallic lines and septic tanks.
FTP-8512 Hz1.1875" x 2.25"Non-replaceableLocating in cast iron and non-metallic lines, including septic tanks.
HTP-158 kHz1.25" x 2.25"Non-replaceableLocating in non-metallic lines and septic tanks.
FD-10512 Hz0.75" x 3.875"1 AAA AlkalineLocating in cast iron and non-metallic lines; suitable for lines 1.5 inches and up.
FD-20512 Hz1" x 4.5"1 AAA AlkalineLocating in cast iron and non-metallic lines; suitable for lines 2 inches and up.
FD-40512 Hz1.25" x 6.375"2 AAA AlkalineLocating in cast iron and non-metallic lines; suitable for lines 4 inches and up.
HD-408 kHz0.75" x 4"1 AAA AlkalineStandard sonde for locating empty ducts; suitable for lines 1.5 inches and up.
HD-808 kHz1.25" x 6.375"2 AAA AlkalineLocating in non-metallic lines; suitable for lines 4 inches and up.
LD-916 Hz1" x 7"3 AAA AlkalineLocating in ductile iron or steel pipes; suitable for lines 4 inches and up.
LD-1416 Hz1.25" x 9.75"4 AA AlkalineLocating in ductile iron or steel pipes; suitable for lines 6 inches and up.
FM-05512 Hz5/8" x 2.25"1 357/LR44Locating 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.