The acorn tubes found widespread use in radios and radar systems.
2.
The wide-band regenerative receiver used Acorn tubes from RCA, and the receiving antenna had three pairs of dipoles and incorporated lobe switching.
3.
The receiver was super-regenerative, using type 955 and 956 Acorn tubes in the front end and a 9-MHz IF amplifier.
4.
The Airborne Group had been experimenting with microwave systems as early as 1938 after discovering that a suitable arrangement of the acorn tubes could be operated at wavelengths as short as 30 cm.
5.
The prototype had a peak-power of 1 kW, and used a pulse length of 2 to 3 ?s with a 10-to 20 kHz PRF . The receiver was a super-heterodyne type using Acorn tubes and a 6 MHz IF stage.
6.
An "'acorn tube "', or "'acorn valve "', refers to any member of a family of UHF vacuum tubes starting just before World War II . They were named after their resemblance to the acorn, specifically due to the glass cap at one end of the tube that looked similar to the cap on an acorn.
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