Stalker Radar (Applied Concepts): Company Profile

By I Go Cars · Updated October 29, 2026

Stalker Radar at a glance

Stalker Radar is the trade name of Applied Concepts, Inc. (ACI), a manufacturer of police traffic radar, lidar, lidar-based photo enforcement and original-equipment speed sensors, headquartered in Richardson, Texas. The company was founded in 1975. Federal and state records list it under its legal name: the National Highway Traffic Safety Administration (NHTSA) conforming product list (CPL) shows "Applied Concepts," and a New York State price list shows "APPLIED CONCEPTS, INC (dba STALKER RADAR)." Its radar and lidar models appear on the CPL, the federal list of speed-measuring devices eligible for purchase with federal highway safety grant funds.

This profile records what official documents and the company state. It does not rate Stalker equipment, and nothing in it compares quality with another maker's products.

Legal name: Applied Concepts, Inc., doing business as Stalker Radar
Founded: 1975 (company statement)
Headquarters: 855 East Collins Boulevard, Richardson, Texas
Earlier location: Plano, Texas, as described in June 2002
Employees: "over 200" (company statement)

History and the Plano years

Applied Concepts describes its beginning modestly: it was "founded as a small contract engineering and manufacturing firm in 1975." A regulatory news announcement filed on the London Stock Exchange by Screen plc on June 17, 2002 offers a dated outside description. It called ACI "a Plano, Texas electronics manufacturer," 25 years old at the time, and the largest US maker of speed radar systems. The same announcement recorded that ACI would distribute a US version of Screen's ProVida video enforcement product.

That 2002 announcement also relayed a company claim: that in 1990 ACI "pioneered digital signal processing in Doppler speed radar" with the Stalker ATR, a Ka-band radar. Digital signal processing means analyzing the reflected radar signal with computation rather than analog circuitry. The claim is the company's. The Stalker ATR itself appears in the CPL's list of discontinued models, recorded as Ka-band, stationary and moving.

The company has since moved to Richardson, Texas. The date of the move from Plano was not found. A WFAA television report on an expansion in Richardson quoted chief executive Alan Mead; the article's date was not captured. The company does not state its ownership on its pages, and no official source located describes it.

A common error is to treat "Stalker" as the company name. Stalker is the brand. Applied Concepts, Inc. is the company, and official lists use that name.

Brands and product lines

Applied Concepts operates three brands, according to its company page. Stalker Radar covers police radar, lidar, photo enforcement and OEM sensors. Stalker Street Dynamics covers radar speed signs, message signs and traffic data. Stalker Sport covers sports radar. The company also makes an undated claim that "More state police agencies use our speed enforcement equipment than all other radar brands combined"; that is the manufacturer's statement and has not been verified here.

Dash-mounted radar

Dash-mounted radar is a console unit in the patrol car that measures from a parked or moving car. The company's police radar page lists the DSR 2X+ (described as new), DSR 2X, DSR, Dual SL and Patrol, noting that "K-band radars come standard" on the Patrol. The 2026 contract catalog filed with New York, with prices effective January 1, 2026, lists the Patrol in K-band with one or two antennas, and the Dual SL, DSR and 2X in Ka-band.

Handheld radar

The Stalker II is the handheld line, offered as the Stalker II Stationary Directional Radar and the Stalker II Moving Directional Radar, both Ka-band. Motorcycle versions are catalogued for the Harley-Davidson, BMW RT-P and Honda ST1300.

Lidar and photo enforcement

Lidar measures speed by timing pulses of infrared laser light. The catalog lists the XS ("2000 foot range"), XLR ("4000 foot range"), XLR-FTC for following-too-close enforcement, and RLR ("9000 foot range"). Those ranges are the manufacturer's product descriptions, not test results. For context, a 1998 New Jersey court decision on a different maker's lidar required expert testimony for readings taken beyond 1,000 feet. The LidarCam 2 is a lidar-based photo enforcement unit, offered with automatic license plate recognition options. The company also lists MC360 message and speed trailers.

Stalker on the federal conforming product list

NHTSA's CPL dated September 15, 2025 lists six current-production Applied Concepts radars in Part I. Mode "S" is stationary; "M" is moving. Ka-band is the 33.4-36.0 GHz range and K-band 24.050-24.250 GHz, as NHTSA defines them.

Stalker Dual SL (Ka; S/M)
Stalker Dual DSR (Ka; S/M)
Stalker DSR 2X (Ka; S/M), with an updated LCD display approved
Stalker II SDR (Ka; S), the stationary handheld
Stalker II MDR (Ka; S/M), the moving handheld
Stalker Patrol (K; S/M)

Part II lists current Stalker lidar: the Stalker RLR, Stalker XLR, Stalker XS-OEM and Stalker LIDARCAM II. The November 28, 2022 CPL, posted by Georgia's Department of Public Safety, listed the same radars, with the DSR 2X shown as "Stalker DSR 2X2" and a footnote for the display substitute, and listed the lidar as RLR, XLR, XS and LIDARCAM II. The details of the 2025 list, including the XS-OEM entry and the move of the Stalker XS to the discontinued section, come from a reading of NHTSA's page rather than a full reading of the PDF.

Part III, models "approved but no longer in production," lists the Stalker Basic (K), Stalker ATR (Ka), Stalker Dual (K and Ka) and the K-band Stalker Dual SL, plus the original Stalker Lidar and Stalker Lidar LR. Band again matters: the Ka-band Dual SL is current, while the K-band Dual SL is discontinued.

A CPL listing records that a model met NHTSA's specification when first listed; NHTSA says test results "do not represent product endorsement." NHTSA retired the down-the-road radar CPL on November 21, 2025, replacing it with an industry program verifying radar against IEEE Std 2450-2019. Whether any Stalker radar has completed that verification was not found. The list can be checked on the NHTSA CPL page.

State approvals, contracts and the record

Pennsylvania's December 29, 2018 list of approved speed-timing devices included the Applied Concepts Stalker Dual, approved for the Pennsylvania State Police in stationary mode only; state approval is separate from federal listing. Applied Concepts holds New York contract PC70500 under Award PGB 23348 (January 9, 2025 to August 31, 2027), a purchasing arrangement rather than an approval for evidentiary use.

No court decision or regulatory action naming Applied Concepts was located in the official records reviewed for this profile.

Frequently asked questions

Who makes Stalker radar?

Applied Concepts, Inc. makes Stalker radar. Stalker Radar is the company's trade name, and federal and state records list the maker as Applied Concepts. The company was founded in 1975 as a small contract engineering and manufacturing firm and is headquartered at 855 East Collins Boulevard in Richardson, Texas.

Is Stalker Radar based in Plano, Texas?

Not now. A June 2002 London Stock Exchange announcement described Applied Concepts as a Plano, Texas electronics manufacturer, but the company's current address, on its own pages and on a January 2025 New York contract award, is in Richardson, Texas. The date of the move was not found.

Is the Stalker DSR 2X on the NHTSA conforming product list?

Yes. The Stalker DSR 2X appears in Part I of NHTSA's September 15, 2025 conforming product list as a Ka-band radar rated for stationary and moving modes, with an updated LCD display approved. NHTSA retired the down-the-road radar list on November 21, 2025.

Does Stalker make a handheld radar?

Yes. The Stalker II is the handheld line, in two versions: the Stalker II SDR, listed on the federal conforming product list for stationary use, and the Stalker II MDR, listed for stationary and moving use. Both are Ka-band. Motorcycle-mounted versions are also catalogued.

What is the Stalker LidarCam 2?

The LidarCam 2 is a lidar-based photo enforcement unit from Applied Concepts that measures speed with a laser and records images of the vehicle. It is offered with automatic license plate recognition options, and the LIDARCAM II appears in Part II of NHTSA's September 15, 2025 conforming product list.

What lidar models does Stalker make?

Stalker's current lidar models are the XS, XLR, XLR-FTC and RLR, plus the LidarCam 2 photo enforcement unit. The company describes ranges of 2,000, 4,000 and 9,000 feet for the XS, XLR and RLR; those are manufacturer descriptions. The RLR, XLR, XS-OEM and LIDARCAM II appear on the 2025 federal list.

Stalker Radar (Applied Concepts, Inc.)