Adcockn.
/ˈadkɒk/, U.S. /ˈædˌkɑk/ Now chiefly historical.
Designating a type of radio aerial having four equidistant vertical elements, typically used for determining the direction of a source.
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society > communication > telecommunication > radio communications > radio equipment > [noun] > aerial
radiator1897
aerial wire1899
aerial1902
antenna1902
loop antenna1906
loop aerial1913
twin aerial1913
frame aerial1916
loop1922
beam aerial1926
cage aerial1926
Adcock1928
dipole1929
V antenna1932
beam antenna1935
rig1935
horn1936
whip1940
whip aerial1941
whip antenna1943
polyrod1945
unipole1945
slot aerial1946
slot antenna1946
dish1948
quad1951
V aerial1961
dish aerial1962
rectenna1964
omni-antenna1966
monopole1974
1928 Jrnl. Inst. Electr. Engineers 66 270/1 These three systems are the single coil, the double-spaced coil, and the Adcock aerial arrangement.
1940 Science 31 May 524/2 Using an Adcock antenna the azimuth of the incoming electromagnetic wave can be defined within one half degree accuracy.
1975 Jrnl. Wildlife Managem. 39 820/2 (caption) Elevating platform with Adcock antenna.
2003 A. Paulraj et al. Introd. Space-time Wireless Communications i. 4 Adcock antennas were a significant advance and were used in World War II.
This is a new entry (OED Third Edition, December 2011; most recently modified version published online December 2021).
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n.1928