With its new and more durable and compact design the FD-10 is perfect for locating in lines as small as 2 inches. The FD-10 transmits using the industry standard 512 Hz frequency for locating in cast iron and nonmetallic lines.

• Stainless Steel head for durability
• Encased in a strong polycarbonate tube
• Watertight
• Brass battery cap and 2 N cell batteries included
• Dropcap available for use with 1/4″ pushrods (sold separately)
• Our Spring Carriers are recommended to help protect your transmitter

The FD-20 is the most popular transmitter in our 512 Hz line for locating in cast iron and nonmetallic lines. And now with its new more durable design the FD-20 is ready to transmit even in the toughest terrain.

Replaces our FV-20 transmitter

• Steel head for durability

• Encased in a strong polycarbonate tube.

• Watertight

• Brass battery cap and 1 AAA alkaline battery included

• Will work with any receiver that uses the 512 Hz frequency. For best results use one of our LineFinders

• Our Spring Carriers are recommended to help protect your transmitter

The FD-40 is the largest in our 512 Hz line of DuraSonde transmitters. Now with a new more durable design it is ready to locate in deep cast iron and nonmetallic lines.

Replaces our FV-40 transmitter

• Best used when mounted on a tractor camera
• Metal Endcap for durability
• Encased in a strong polycarbonate tube
• Watertight
• Brass battery cap and 4 C cell batteries included