Creation of PicoDopp DF

A Doppler DF sensor is used in this PicoDopp device which consists of 6 OEM PC boards that are tested and assembled but not assembled into a finished DF instrument.

The PicoDopp is designed for hobbyists and amateurs where additional work is required in terms of tools and constructions skills. All interconnecting cables, display computer, antenna platform, and FM receiver have to be provided by the user. There are four termination boards in the PicoDopp PC board with one for each antenna. The optional displays were provided with additional connections and these displays use the AUX outputs by the main board of PicoDopp.

A horizontal metal plate and 4 vertical antenna elements comprise the antenna platform. To add strength and rigidity to the 2×2 or 3×3 metal plate, struts were reinforced. The antenna elements are made from brazing rod that are soldered into RF connectors to allow easy installation and removal from the platform. The metal plate can be secured to a vehicle roof with a cargo strap and to prevent damage to the roof, tennis balls can serve as cushions. For each antenna element, the mating connectors are installed into metal plate holes.

Rest of the project