A Bellini–Tosi direction finder (B–T or BTDF) is a type of radio direction finder (RDF), which determines the direction to, or bearing of, a radio transmitter...

with ground stations homing in on the aircraft's radio set. Bellini–Tosi direction finders were widespread from the 1920s into the 1950s. Early RDF systems...

antennas. This eliminated any need for the antennas to move. The Bellini–Tosi direction finder (B-T) was widely used on ships, although rotating loops remained...

Libellus de locorum describendorum ratione. The Bellini–Tosi direction finder was a type of radio direction finder that was widely used from World War I to World...

advance in RDF technique was introduced in the form of the Bellini-Tosi direction finder (B-T) system, which replaced the rotation of the antenna with...

the approximate inductance of several inductor constructions. Bellini–Tosi direction finder (radio goniometer) Hanna curve Induction coil Induction cooking...

displays the amount of stereo in a dual-channel signal The Bellini–Tosi direction finder is also known as a radio goniometer This disambiguation page...

the bearing of a radio transmitter using a system known as a Bellini–Tosi direction finder (B-T). A trained B-T operator could produce a reasonably accurate...

received the XPY-1 for service tests and development of the Bellini–Tosi direction finder. 1 May 1930: VP-8S operated with VT-9S during fleet exercises...

United States; and Bellini and Tosi, of Italy." The Stone Radio & Telegraph Company installed an early prototype radio direction finder on the naval collier...