AndiScan micro is an advanced ballistic velocity Doppler radar for measuring muzzle velocity of projectiles. It operates in 24GHz frequency band. It is a highly integrated and extremely small form-factor device that is intended to be directly mounted on the rifle. This frees the user from a complicated setup alignment and it also allows to perform measurements under dynamic conditions. It is a first device of this form-factor on the public market.

Latest updates

  • (3/2023) case – improved advanced industrial plastic technology (used in all 2023 production)

New and updated features of A2 model

  • completely redesigned electronics – to make the device more robust, better serviceable and to allow new functionalities
  • modifications of the mechanical form factor – better ergonomics of keys, easier battery access, SD card slot in more robust position against acceleration shocks, unified dimensions of mounting slots
  • real time clock – allows to keep a track of time and date in measurement data
  • extended configuration of transceiver HW – allows fine offset setting of carrier frequency for better interference control, gain of the receiver can be set to two values for handling extremely weak and extremely strong signals
  • remote trigger option – allows precise triggering with minimal latency (less than 200 microseconds) for almost “true” V0 measurement or for a triggering of the device in special measurement setups
  • internal memory independent of SD card – for storing last 100 measured data
  • automatic self-calibration of internal trigger sensor – better and repeatable settings in wide range of environmental conditions
  • improved browsing of stored data – long key press for fast changes
  • power profile display – 16 slot line display showing relative power of the received signal over the measurement window. It allow the user to find possible problems with triggering or with aiming the antenna.
  • mounting side-offset compensation – (see Chapter 5 of User Guide) the compensation of the side offset allows to find a true V0 velocity value.
  • improved signal processing – the processing is more tolerant to proper positioning of the device and eliminates some imperfections of radio wave propagation
  • SD/ES display choice

Key features

  • Micro form-factor allows a direct mount on the rifle. The form-factor minimization was a main design target.
  • The direct rifle mount close to the chamber enables to trigger the device by a direct transmission of the shot vibration waves. It makes a reliable and short latency triggering.
  • Short latency triggering allows to perform a velocity measurement directly on close-to-muzzle range. This avoids the need of any measurement extrapolations to get the muzzle velocity.
  • Signal processing is optimized for velocity measurement precision and for small device form-factor.
  • A full velocity measurement statistic including graphical histogram data are provided.
  • The device explicitly estimate its own measurement precision (99% confidence interval) based on received signal-to-noise ratio.

Production & Distribution

Important: Please check the availability in the e-shop. See our Terms and Conditions.


  • Doppler radar in 24GHz band (24.150 – 24.220 GHz, channel spacing 10 MHz)
  • Transmitter output power 11 dBm
  • Velocity measurement range (* only in expert mode)
    • High (H) 484.9 – 1309.3 mps
    • (*) Wide (W) 242.5 – 1309.3 mps
    • (*) Mid (M) 30.3 – 303.1 mps
    • (*) Low (L) 1.0 – 121.3 mps
  • Measurement unit – mps, fps, kph, mph
  • Measurement precision with 99% confidence for given signal-to-noise ratio (SNR) (expected value based on theoretical analysis)
    • 0.50 mps H/W range, SNR= 20dB
    • 0.06 mps M range, SNR= 20dB
    • 0.03 mps L range, SNR= 20dB
    • 0.16 mps H/W range, SNR= 30dB
    • 0.02 mps M range, SNR= 30dB
    • 0.008 mps L range, SNR= 30dB
  • Minimum time between measurements – approx 1s.
  • Dimensions (H) 92 x (W) 66 x (D) 28 mm
  • Weight (including internal battery) 141g


(*) additional language versions (CZ) will be available soon.

Technical support

If you experience any technical difficulties or if you need a technical help contact us at

Firmware Updates

Latest version and compatibility notes

  • (8/2023) The latest firmware version US/TXR is US_A2.5.1/TXR_A2.4.0
  • Change log
    • US_A2.5.1/TXR_A2.4.0 (8/2023)
      • (minor internal update) US_A2.5.1 updates internal version number storage for devices produced 8/2023 and later.
      • There is no need to update the devices already having US_A2.5.0/TXR_A2.4.0
    • US_A2.5.0/TXR_A2.4.0 (4/2023)
      • FW Compatibility. US_A2.5.0+ requires TXR_A2.4.0+. When upgrading from 2.3.x/2.2.x or 2.4.x/2.3.x versions, both US and TXR must be upgraded at once.
      • (1) Both AS2 processing units – MainBoard UserShell (US) and core-low-level transceiver (TXR) code are upgradeable. This allows much more radical changes to the unit behaviour.
      • (2) A new FastResponse-TRG mode is introduced. It substantially reduces the unit TRG recovery time when there are many other shooters on the firing line and false readings “***” triggered by others block the reading of the true shot. It is made a default mode activated by a standard short press of [Enter]. The original full response mode is activated by a long press of [Enter] and it is indicated by black “*” in the Armed display white flag.
      • (3) TXR_A2.4.0 has optimised more robust internal signal processing that substantially reduces a chance of getting false readings (with low range margin value) caused by strong vibrations.
      • (4) Up to 10 Configuration Profiles can be set (e.g. for different rifles or measurement scenaria). Selection of the profile is activated by pressing and keeping pressed the [Enter] button during the welcome screen. The DATAxx.CSV contains a ConfProfile marker. Also, for easier orientation in stored data, a subset of folders is dedicated to each profile (e.g. ConfProfile 2 uses F200..F299). Default profile #0 uses (for backward compatibility reasons) through the whole range F000..F999.
      • (5) DATAxx.CSV files contain additional data: Time Stamps for each shot, and numerical values of PowerProfile. PowerProfile data is a set of 16 numbers [0..8] describing relative signal strength over the measurement window segments.
      • (6) New Folder/Session Management (FSM) mode enables (a) a direct access to setting Folder and Session number, (b) listing Series files in Folder, (c) deleting Series, (d) deleting Folder. FSM mode is activated by a long press of [Enter] in DAT mode. When deleting Folder/Series, the time progress sequence of Folder/Session is preserved. The newer one will go after the highest number already used. If the maximum value of the Folder range number is reached, the device tries to find some unused number in Folder sequence. If there is no one, the device prompts the user for action to empty the space. If the deleted Folder or Session is the last one, than its number is reused, otherwise it is increased as usual.
      • (7) Actions associated to buttons in Firmware Config/Diagnostic are made more consistent with standard operation modes. [Mode] key moves to the next screen or exits the mode.
      • (8) PowerProfile display is enabled in both Standard and Expert modes.
    • US_A2.4.0 (10/2022)
      • internal SW optimization
    • US_A2.3.0 (12.8.2022)
      • bug fix: corrected wrong displayed Min/Max/dv values in C4 configuration screen for Low range setting (affects only diplayed values, measurement itself is unaffected)
      • new feature: SD and ES can be shown both together at the main screen display, if it is set in C8 configuration screen
    • US_A2.2.0 (4.7.2022) – initial release

Firmware Update Request Form

    Firmware installation instructions

    AndiScan A2 has two main processing units – Main Board User Shell (US) and Transceiver board (TXR). Firmware (FW) for each of them is updated separately. The firmware file for US and TXR are named A2FW-US.BIN and A2FW-TXR.BIN respectively. For easier distribution and identification of their version, they are distributed as compressed zip files named A2FW-US.BIN_<version>.zip and A2FW-TXR.BIN_<version>.zip where <version> is the version number (e.g. Before using them for the update procedure, they must be unzipped to A2FW-US.BIN and A2FW-TXR.BIN on your personal compter and their names must be kept exactly as they are including the capital letters.

    Version numbers of A2FW-US.BIN and A2FW-TXR.BIN do not need to be the same. The release compatibility notes will always declare which versions are mutually compatible. Updating A2FW-US.BIN is technically much easier and takes only few seconds. Updating of core low-level TXR firmware A2FW-TXR.BIN is technically much more complex procedure and it takes several minutes. Each phase of the upgrade has its information progress screen. Please, make sure that the device has a sufficiently charged battery. Powering off the device (e.g. due to a discharged battery) during the update process might have unpredictable consequences.

    All following options are generally possible (on condition of mutual compatibility of the versions). (1) Upgrading only A2FW-US.BIN, (2) upgrading only A2FW-TXR.BIN, (3) upgrading both A2FW-US.BIN and A2FW-TXR.BIN at once. You can generally both upgrade or downgrade the firmware, provided that the chosen versions (US/TXR) are mutually compatible and also compatible with your device HW.

    Update procedure steps

    1. Check the current firmware US/TXR versions of your AndiScan A2 device (C0 configuration screen) and decide whether the update is needed.
    2. Request the US and/or TXR firmware update file/files. For the following steps, they must be named A2FW-US.BIN and/or A2FW-TXR.BIN regardless of the version number.
    3. Switch off your AndiScan A2, remove its micro SD card and insert it to your personal computer. Use the provided SD adapter if needed.
    4. Store the file(s) to the root directory of the SD card.
    5. Insert the SD card back to your AndiScan A2 device.
    6. Switch on the device. The update is applied automatically. Do not switch off the device until normal operation screen is shown. Observe the progress screens and monitor for any potential warnings or errors. If there are no errors, the device finally gets into the standard operation regime. If there are any errors, contact us for resolving the issues.
    7. Check the new firmware version shown on welcome screen or in the configuration C0 screen.