FD-40 | 512 Hz DuraSonde 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

Frequency: 512 Hz
Dimensions: 1-1/2” W x 10-1/4” L
Line size: 6 inches and up
Range: 32 feet in cast iron | 47 feet in nonmetallic
Range is determined under best conditions using a Prototek Receiver
Signal tone: Continuous
Battery: 4 C cell alkaline batteries

Q: Why am I not getting full range anymore?
A: As with most electronics the stronger your battery life the more performance you will get out of it. So we recommend using fresh batteries for every locate.

Q: I am using a receiver other than Prototek and I am not getting the range that you advertise on your website. What is the deal?
A: Our receivers are very sensitive, they tend to pick up the signals a little better than others. All our ranges posted on our website are determined with our receivers. We can't guarantee what you will get with other brands of receivers.

Q: How would I push this large of a transmitter down the line?
A: We highly recommend use with a tractor camera. This is the easiest and safest way to put this large of a transmitter down the line. Some customers go as far as getting some PVC pipe and two encaps. This would be like a makeshift spring carrier and is a great way to protect your transmitter.

Q: Can I use this transmitter with my jetter?
A: Yes you can. There are a couple things to keep in mind. First, this is a very larger transmitter and we only recommend you use it with a jetter hose 2” and above. Second, make sure you securely tape it at least 4 feet behind the jetter head.


There are no reviews yet.

Be the first to review “FD-40 | 512 Hz DuraSonde Transmitter”

Your email address will not be published. Required fields are marked *

Additional information

Weight 8 lbs
Dimensions 20 × 4 × 4 in