Nokta Impact Pro Pack Metal Detector

The Nokta Impact Pro Pack is a VLF detector with three selectable frequencies, 5, 14 and 20 kHz, and twelve search modes. The Pro Pack carries two waterproof DD coils, the IM28 11 x 7 inch and the IM19 7.5 x 4 inch, plus headphones, four rechargeable AA batteries with a charging dock, an extra lower shaft and a carrying bag.

What is in the box with the Nokta Impact Pro Pack

Nokta's standard contents for the Impact Pro Pack

• Nokta Impact detector
• IM28 waterproof DD search coil, 28 x 18 cm (11 x 7 inch), with cover
• IM19 waterproof DD search coil, 19 x 10 cm (7.5 x 4 inch), with cover
• Headphones
• Extra lower shaft
• Mini-USB data cable
• Rechargeable battery dock with micro-USB cable and 4 rechargeable AA batteries
• Detector stand
• Protective covers
• Carrying bag
• User manual

Who the Nokta Impact suits

We like the Impact for its operating flexibility: three selectable frequencies and twelve search modes. It suits experienced detectorists who enjoy adjusting their equipment for different conditions.

About the Nokta Impact

The twelve search modes are STA and STA (D), the two static modes; GEN and GEN (D), the two all-metal modes; and the discrimination modes DI2, DI3, DI4, DI99, COG, DEEP, VLX1 and VLX2. Target ID reads from 00 to 99 and gain from 01 to 99, with notch filter, tone break, iron volume and adjustable audio from 150 to 700 Hz. iSAT sets how quickly the detector recovers its threshold hum in the general search modes, and in the discrimination modes it runs from 00 to 10 to help reduce false signals.

A 5-level magnetic mineralization indicator shows how strong the ground's magnetic minerals are, and in pinpoint the display gives an estimated target depth calibrated for a 2.5 cm (1 inch) coin. Vibration, an LED flashlight and a backlight round out the controls, and Nokta builds in software update capability, with updates announced on the product's web page.

Batteries: the Impact runs on four AA batteries. Nokta recommends alkalines for the best performance and gives about 9 to 17 hours depending on the frequency; good quality NiMH rechargeables can be used instead, and the Pro Pack includes four with a charging dock. Don't mix the two types. The detector weighs 1.8 kg (4 lb) with coil and batteries, and the shaft adjusts from 107 to 143 cm (42 to 56 inch).

Water: all Impact search coils are waterproof, so the coil can go into shallow water and work the beach, but Nokta says to keep the system box dry and not to immerse the detector.

Settings that matter on the Nokta Impact

Three frequencies: 5, 14 and 20 kHz. Nokta matches 5 kHz to large ferrous and non-ferrous objects, 14 kHz to general use and 20 kHz to small coins of different conductivities and thin large coins. In our experience the lower frequency suits larger or higher-conductivity targets and the higher frequency suits smaller or lower-conductivity ones. You select one frequency at a time; the three do not run simultaneously.

Twelve search modes: two static (non-motion) modes, two all-metal modes and eight discrimination modes. In a modern park, a discrimination mode cuts down unwanted targets. On an older property, a different mode may give you more useful information. We would not change modes constantly without understanding what each one is for.

Ground balance: automatic, manual and tracking. Nokta suits tracking to land where the soil changes within the same site and recommends it in the general search modes. Elsewhere, manual ground balance may give more consistent operation.

Which Impact coil to use

The Pro package carries two DD coils. The IM19 (7.5 x 4 inch) suits dense iron, trashy locations and confined terrain. The IM28 (11 x 7 inch) is the general-purpose coil for coverage. The headphones in the package plug into the detector's headphone jack.

Where the Nokta Impact works well, and where it does not

Picture an abandoned farmstead with nails, brass, iron fragments and the occasional coin. The Impact's discrimination controls and selectable frequencies give you room to work that ground. No setting removes target masking completely, though; a good target lying beside iron can still hide.

One mistake to avoid with the Nokta Impact

Assuming the three frequencies run at the same time. The Impact runs the one frequency you select, so choose it for the targets and ground in front of you.

Our recommendation on the Nokta Impact

We recommend the Impact to experienced detectorists who want extensive adjustment and two useful coils. Its strongest points are three selectable frequencies, twelve search modes and two complementary coils. See more relic and treasure metal detectors.

Nokta Impact specifications

Nokta covers the Impact with a 2-year warranty.

Coils and accessories for this detector are in our Nokta Impact collection, and every Nokta detector we carry is in our Nokta metal detectors.