Home /Ridgid /Tools & Hardware /RIDGID SeekTech ST-305 Line Transmitter (21898) – 5W 4-Frequency

-92%

ridgid-seektech-st-305-line-transmitter-21898-5w-4-frequency image 1

ridgid-seektech-st-305-line-transmitter-21898-5w-4-frequency image 2

ridgid-seektech-st-305-line-transmitter-21898-5w-4-frequency image 3

ridgid-seektech-st-305-line-transmitter-21898-5w-4-frequency image 4

ridgid-seektech-st-305-line-transmitter-21898-5w-4-frequency image 5

Tools & Hardware

RIDGID SeekTech ST-305 Line Transmitter (21898) – 5W 4-Frequency

Name: RIDGID SeekTech ST-305 Line Transmitter (21898) – 5W 4-Frequency
Brand: Ridgid
SKU: WOR-TOO-852
Price: 100 USD
Availability: InStock
Rating: 4.7 (3 reviews)

4.7 (3)

$1,208.99 $100.00

The RIDGID SeekTech ST-305 line transmitter provides up to 5 watts of power and four selectable frequencies to energize buried metallic pipes and cables for accurate line tracing, with three connection methods.

In Stock

- 1 +

Get it in 3–5 business days.

15 people are viewing this item. 13 sold today. Only 9 left in stock.

Buy more, save more

ridgid-seektech-st-510-10-watt-line-transmitter image 1

Pair withRIDGID SeekTech ST-510 10-Watt Line Transmitter$100.00

Categories : Tools & Hardware

SKU : WOR-TOO-852

Description

The RIDGID SeekTech ST-305 Line Transmitter (catalog number 21898) is built for locating underground metallic cables and pipes with speed and accuracy. It delivers up to 5 watts to energize the line, and can send two frequencies at once so you can trace and verify in a single pass. This transmitter is ideal for utility crews, plumbers, and contractors who need to map out buried services before digging.

RIDGID SeekTech ST-305 Line Transmitter: Frequencies and Connections

Four selectable frequencies let you adapt to line length, soil conditions, and interference. Connect directly for the strongest signal, use surface induction for non-contact tracing, or add the optional inductive signal clamp for insulated lines. The audio feedback and LED-lit buttons confirm the circuit is active before you start tracing.

Getting the Most from Your ST-305

If you need the RIDGID ST-305 manual, it ships in the box and explains connection methods, frequency selection, and safety practices. Our team can also email you a digital copy if you misplace yours.

Features

Up to 5 W output: energizes hard-to-find metallic lines
Four selectable frequencies: reduces interference and adapts to site conditions
Simultaneous dual-frequency transmission: saves time by tracing two signals at once
Three connection methods: direct, surface induction, and inductive clamp for versatile hookup
Compact, portable design: includes carrying strap and ground rod
Model: ST-305 / 21898
Weight: 4.2 lb (1.9 kg)
Output Power: 5 W
Power Source: Battery operated
Product Type: Line transmitter for underground cable/pipe locating
Transmission: Simultaneous dual frequency
Frequency Options: 4 selectable (512 Hz, 8 kHz, 33 kHz, 262 kHz)
Connection Methods: Direct, surface induction, inductive clamp
Seller: Workbench World
MPN: ST-305 / 21898

Product Details

Understand Your Three Connection Methods

Direct connection gives the strongest signal on a single metallic line. Surface induction energizes a line without touching it, which is useful for tracing through grass or pavement. Inductive clamp wraps around the line or pipe and is ideal for insulated conductors.

Frequency Selection: Match the Tone to the Job

Low frequencies travel farther on continuous lines; high frequencies help pinpoint breaks and follow lines through congested areas. Dual-frequency mode lets you verify your readings with a second frequency in the same pass, reducing callbacks.

Frequently Asked Questions

What frequencies does the ST-305 use?

It offers four selectable frequencies: 512 Hz, 8 kHz, 33 kHz, and 262 kHz, and it can transmit two frequencies simultaneously.

What are the three connection methods?

You can connect directly, use surface induction, or use an optional inductive signal clamp to couple the signal onto the line without a direct connection.

How do I get the RIDGID ST-305 manual?

A printed manual is included. If you need a digital copy, contact Workbench World support and we can email you one.

What kind of battery does it take?

The transmitter is battery-operated; the manual specifies the battery type. It includes an extendable carrying strap and a ground rod.

Customer Reviews

3

5.0

Ivy

Verified

So cool

Works like magic.

5.0

Ralph

Pro grade locating

I've been locating underground lines for 20 years, and this transmitter is as good as any I've used. The signal is strong and the four frequencies cover all the common lines. The battery connection is solid. The 5 watts really push the signal down the line. I like that it gives me options for difficult traces.

4.0

Cindy

Works well

We use this with our ST-305 receiver and it finds lines accurately. The display is clear. It's a bit pricey but worth it if you do utility work.

Related Products

View All

4.6 (14)

RIDGID SeekTech ST-510 10-Watt Line Transmitter

$2,440.97 $100.00

ridgid-seesnake-compact-c40-system-63828-with-cs6x-versa-monitor-18v-battery-cha image 1

4.7 (3)

RIDGID SeeSnake Compact C40 System (63828) with CS6x VERSA Monitor, 18V Battery & Charger

$49.99 $25.00

ridgid-seesnake-compact-m40-system-63818-with-cs6x-versa-monitor-18v-battery-cha image 1

4.7 (3)

RIDGID SeeSnake Compact M40 System (63818) with CS6x VERSA Monitor, 18V Battery & Charger

$49.99 $25.00

ridgid-seesnake-l100c-microreel-video-inspection-camera-with-sonde-and-transmitt image 1

4.4 (9)

RIDGID SeeSnake L100C MicroReel Video Inspection Camera with Sonde and Transmitter, 100 ft, CA-350 Compatible

$5,499.00 $100.00

ridgid-vt2534-7-piece-auto-detailing-vacuum-accessory-kit-for-1-1-4-ridgid-wet-d image 1

4.5 (11)

RIDGID VT2534 7-Piece Auto Detailing Vacuum Accessory Kit – for 1-1/4" RIDGID Wet/Dry Vacuums

$65.01 $32.51

5.0 (2)

DEWALT 1-1/2 in SAE Combination Wrench with DirectTorque Technology

$73.68 $36.84

5.0 (3)

DEWALT 1/2 in Round Head Quick Release Ratchet – 72-Tooth

$29.99 $15.00

4.7 (3)

DEWALT 1/2-Inch Drive Breaker Bar – 23-Inch

$29.99 $15.00

Free Shipping

Orders over $45.00 ship free. Otherwise, shipping is $8.00.

30-Day Returns

Hassle-free returns

Secure Payment

SSL encrypted checkout

Quality Assured

100% genuine products

Browse All

Your cart is empty

Subtotal

-92%

RIDGID SeekTech ST-305 Line Transmitter (21898) – 5W 4-Frequency

Buy more, save more

Description

RIDGID SeekTech ST-305 Line Transmitter: Frequencies and Connections

Getting the Most from Your ST-305

Features

Understand Your Three Connection Methods

Frequency Selection: Match the Tone to the Job

Frequently Asked Questions

Customer Reviews

Ivy

So cool

Ralph

Pro grade locating

Cindy

Works well

Related Products

Recently viewed

Free Shipping

30-Day Returns

Secure Payment

Quality Assured

Shop

Shop by Brand

Customer Support

Contact Information