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  1. V

    Caldwell Ballistic Chrony

    The top unit is not on line with the bottom part ( factory assembly ) it is stright, but after changing the position connectors...
  2. V

    AEAC Video - FX Wildcat Compact .25 & FX Wireless Pocket Chronograph

    Before testing, look what the FX radar has specification. You can try use devices at the same time, if frequencies are different. Labradar (FMCW technology) and digitally controlled 24 GHz adjustable frequency with 8 MHz channel step. .
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    FX Wireless Radar Chronograph Review/Opinion Video

    @ Low price only with Arduino + HB100 Doppler radar sensor 😉, but the device with HB100 will be unreliable for a high speed measurement. Jeremy Lee https://www.allaboutcircuits.com/news/teardown-tuesday-hb100-doppler-radar-module/ https://youtu.be/0oK-Co2i01U HenrikL15...
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    FX Wireless Radar Chronograph Review/Opinion Video

    A nice presentation... but if the distance Y of the barrel is higher, an error is higher too. https://youtu.be/1Mae7F3UuYI When the XN ( max. operating distance) is short, a frequency of received signal, strongly depends on an angle. An example 1 (Air Force Texan, assumed X...
  5. V

    FX barrels

    What is BC new X system? Is it higher than below ? https://hardairmagazine.com/ballistic-coefficients My the Daystate Red Wolf .177, JSB Heavy has 0.035 at 12 Ft/Lbs.
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    FX Wireless Radar Chronograph Review/Opinion Video

    @ I'm sorry if I wrote something bad. The results are approximately similar because they are two different devices and different measurement methods. 1) Small devices are sensitive to an angle. 2) If the distance from the barrel is too small - a noise, vibrations, may disturb the measurement...
  7. V

    Daystate Pulsar power re-programming question

    It is not easy, but i can to describe soon - how to change the power ( up/down ) in the Pulsar and Red Wolf. The new design with front panel and circuit for programming ( USA version ).
  8. V

    Doppler Velocimeter

    I will give you today 1000 USD if their accuracy is true...
  9. V

    Doppler Velocimeter

    The Doppler needs a good stability microwave oscillator and antenna. The Labradar is Doppler chronograph - rest are marketing toys.
  10. V

    Air Chrony - be careful with their products!!!

    The TUV SUD test report The technical report or test report does not constitute authorization to use a certification mark. The report itself must not be used for advertising https://www.tuev-sued.de/uploads/images/1468237253134322280400/tuv-sud-broshure-certification-marks.pdf ...
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    Air Chrony - be careful with their products!!!

    Where the Air Chrony has TUV SUD certificate with confirmation an excellent accuracy 0.02% ? Only products with a certificate can be marked with TUV SUD. Even the protocol of one-time measurements does not give permission for marking the product TUV SUD. They use the mark in trading actions...