XP - 11" FMF Wireless Search Coil 

The XP D28FMF 11" FMF Wireless Search Coil is the versatile, all-purpose coil of XP's FMF lineup, delivering an excellent balance of depth, ground coverage, target separation, sensitivity, and maneuverability.

Measuring 11" / 28 cm, the D28FMF uses XP's advanced FMF® Fast and Simultaneous Multi-Frequency technology and operates across 49 selectable single frequencies from 4 to 45 kHz, in addition to XP's simultaneous multi-frequency programs.

Whether you're searching for coins in a park, relics around an old home site, jewelry at the beach, or targets in mineralized ground, the D28FMF provides the versatility to handle a wide range of detecting conditions.

FMF® Fast & Simultaneous Multi-Frequency Technology

The D28FMF utilizes XP's FMF – Fast and Simultaneous Multi-Frequency technology.

Compatible XP detectors can process multiple frequencies simultaneously, providing excellent performance across a broad range of targets and ground conditions.

The D28FMF is capable of operating across frequencies from:

4 kHz to 45 kHz

with 49 selectable single frequencies available on compatible systems.

Lower frequencies can provide advantages on larger and higher-conductive targets, while higher frequencies increase sensitivity to smaller and lower-conductive targets.

FMF combines multiple frequencies to provide excellent versatility without requiring the detectorist to constantly change operating frequencies.

11" / 28 cm Round Design

The D28FMF measures:

11 inches / 28 cm in diameter

This middle-size design provides an excellent balance between the precision of XP's smaller 9" FMF coil and the additional coverage of the larger 13" x 11" FMF.

The 11" coil provides:

• Excellent depth

• Excellent ground coverage

• Strong target separation

• Good maneuverability

• Excellent sensitivity

• Versatile performance across many terrains

For detectorists who want one FMF coil to handle most detecting situations, the D28FMF is an excellent choice.

Excellent General-Purpose Coil

The D28FMF is well suited for virtually every major type of treasure hunting.

It's an excellent choice for:

• Coin hunting

• Relic hunting

• Jewelry hunting

• Parks

• Fields

• Old home sites

• Beaches

• Freshwater hunting

• Saltwater hunting

• Farm fields

• Historic sites

• Moderate iron

• Mineralized ground

• General treasure hunting

The 11" size provides enough ground coverage for efficiently searching large areas without becoming overly cumbersome around obstacles or target-dense locations.

Excellent Depth & Ground Coverage

Compared with the smaller 9" FMF coil, the 11" D28FMF covers more ground with every sweep.

The larger detection footprint also provides excellent performance on deeper targets while retaining good sensitivity to smaller objects.

This makes it particularly useful when searching:

• Large fields

• Beaches

• Open parks

• Pastures

• Historic properties

• Large relic sites

For detectorists covering substantial amounts of ground, the 11" size offers an excellent compromise between coverage and precision.

Strong Target Separation

Despite its larger size, the D28FMF retains excellent target separation when combined with XP's fast detector architecture.

This allows the coil to perform well in areas containing:

• Iron

• Nails

• Aluminum trash

• Multiple adjacent targets

• Modern debris

For extremely dense iron or tight spaces, the 9" D22FMF may provide an advantage, but the 11" D28FMF offers an excellent combination of separation and additional ground coverage.

Excellent for Relic Hunting

The D28FMF is an excellent general-purpose relic hunting coil.

Its combination of depth, coverage, and target separation makes it well suited for:

• Old home sites

• Mining camps

• Ghost towns

• Military sites

• Farm fields

• Historic trails

• Abandoned settlements

• Cellar holes

• Old gathering places

The 11" size allows you to efficiently cover larger historic sites while maintaining enough separation to work around moderate concentrations of iron.

Excellent for Coin & Jewelry Hunting

The broad frequency capabilities of XP's FMF system make the D28FMF highly versatile across different target conductivities.

It performs well on:

• Silver coins

• Copper coins

• Clad coins

• Small coins

• Rings

• Gold jewelry

• Silver jewelry

• Chains

• Buttons

• Tokens

• Other small metallic targets

This makes it an excellent everyday coil for detectorists who search a variety of locations and targets.

Excellent for Beach Detecting

The D28FMF is also an excellent beach coil.

Its 11" footprint provides enough ground coverage to efficiently search large stretches of sand while remaining considerably more maneuverable than an oversized search coil.

Combined with XP's FMF beach programs, the D28FMF is well suited for:

• Dry sand

• Wet sand

• Saltwater beaches

• Freshwater beaches

• Surf

• Shallow-water detecting

• Underwater detecting

Fully Waterproof to 20 Meters / 66 Feet

The D28FMF is fully waterproof to 20 meters / 66 feet.

This allows the coil itself to be completely submerged for:

• River detecting

• Lake detecting

• Surf hunting

• Swimming-hole detecting

• Underwater treasure hunting

• Beach detecting

When using XP's wireless coil system underwater, the appropriate XP underwater antenna/waveguide system may be required because wireless radio signals do not effectively travel through water.

Fully Wireless Search Coil

The D28FMF contains its own electronics, rechargeable battery, and wireless communication system.

There is no traditional coil cable running up the detector shaft.

The search coil communicates wirelessly with the compatible XP controller.

This provides a clean, lightweight detector configuration and eliminates many of the inconveniences associated with conventional coil cables.

Rechargeable Internal Battery

The D28FMF contains an integrated rechargeable lithium battery.

Depending on the program and operating frequencies being used, XP rates the coil for up to approximately:

20 hours of battery life

Battery runtime varies depending on detector configuration, program, and frequency.

470-Gram Weight

The standard D28FMF weighs approximately:

470 g / 16.6 oz

Its relatively low weight helps maintain the excellent balance and ergonomics associated with XP's detector platforms.

Product Compatibility

The XP D28FMF is part of XP's current FMF coil ecosystem.

Compatible With

• XP DEUS II

• XP DEUS II Remote Control

• XP WS6 Master

• XP WS6 ST Master

• XP ICON

• XP ICON X

XP DEUS II

The D28FMF is one of the primary search coils designed for the XP DEUS II.

When paired with the DEUS II Remote Control, it provides access to the DEUS II's advanced FMF programs, discrimination, Reactivity, ground controls, audio options, and other detector settings.

XP WS6 Master

The D28FMF can also be controlled by an XP WS6 operating in Master mode.

This allows the detector to operate without the full DEUS II Remote Control and creates an extremely lightweight detector configuration.

XP WS6 ST Master

The newer WS6 ST can also function as the master controller for the D28FMF.

This provides a lightweight detector setup with Target ID, detector controls, and access to XP's newer stereo audio ecosystem.

XP ICON & ICON X

The D28FMF is also compatible with the newer XP ICON and ICON X detector platforms.

XP officially lists the D28FMF among the DEUS II FMF ecosystem coils supported by ICON and ICON X.

This makes the D28FMF particularly versatile for customers who own or plan to own multiple detectors within XP's current FMF ecosystem.

D28FMF vs. Other XP FMF Coils

9" / 22.5 cm D22FMF

Best for:

• Heavy iron

• Maximum target separation

• Trashy sites

• Tight spaces

• Rocky terrain

• Maximum maneuverability

11" / 28 cm D28FMF

Best for:

• General-purpose detecting

• Excellent balance of depth and separation

• Coin hunting

• Relic hunting

• Beaches

• Parks

• Fields

• Everyday detecting

13" x 11" D3428FMF

Best for:

• Maximum ground coverage

• Large open fields

• Beaches

• Cleaner ground

• Covering large areas

• Greater sensitivity to deeper/larger targets

For most detectorists, the 11" D28FMF is the sweet spot of the standard XP FMF coil lineup.

Key Specifications

• 11" / 28 cm round search coil

• FMF® Fast and Simultaneous Multi-Frequency

• 49 selectable single frequencies

• Frequency range: 4–45 kHz

• Fully wireless operation

• Integrated rechargeable lithium battery

• Up to approximately 20 hours battery life

• Fully waterproof to 20 m / 66 ft

• Weight: approximately 470 g / 16.6 oz

• Excellent depth

• Excellent ground coverage

• Strong target separation

• Excellent general-purpose performance

• Compatible with XP DEUS II

• Compatible with WS6 Master

• Compatible with WS6 ST Master

• Compatible with XP ICON

• Compatible with XP ICON X

• 5-year XP warranty

• Made in France

What's Included – D28FMF

The XP D28FMF package includes:

• XP 11" / 28 cm FMF Wireless Search Coil

• 11" Coil Cover / Skidplate

• Lower Stem

• Coil Screwing / Mounting Kit

• Integrated rechargeable coil battery

• Associated XP factory documentation

The included lower stem is particularly convenient for detectorists who own multiple XP coils, allowing the D28FMF to remain mounted to its own lower stem for faster coil changes.

The All-Purpose XP FMF Coil

The XP D28FMF 11" FMF Wireless Search Coil is an excellent choice for detectorists looking for one coil capable of handling almost everything.

It provides more ground coverage and depth potential than the smaller 9" coil while retaining considerably more maneuverability and target separation than an oversized search coil.

With FMF multi-frequency technology, 4–45 kHz operation, wireless communication, up to 20 hours of battery life, 66-foot waterproof capability, and compatibility across XP's modern FMF ecosystem, the D28FMF is a true do-it-all search coil.

Depth. Coverage. Separation. FMF performance. The XP D28FMF is the all-around workhorse of the XP FMF coil lineup.