The 1L6 is a 7 pin miniature

vacuum tube A vacuum tube, electron tube, valve (British usage), or tube (North America), is a device that controls electric current flow in a high vacuum between electrodes to which an electric voltage, potential difference has been applied. The type kn ...

of the

pentagrid converter The pentagrid converter is a type of radio receiving valve (vacuum tube) with five grids used as the frequency mixer stage of a superheterodyne radio receiver. The pentagrid was part of a line of development of valves that were able to take an ...

type. It was developed in the United States by Sylvania. It is very similar electrically to its predecessors, the Loktal-based 1LA6 and 1LC6. Released in 1949 for the

Zenith Trans-Oceanic The Trans-Oceanic (abbreviated T/O) was a brand of portable radios produced from 1941 to 1981 by Zenith Radio. They were characterized by heavy-duty, high-quality construction and their performance as shortwave receivers. History Zenith's founde ...

shortwave portable radio, this tube was in commercial production until the early 1960s . The 1L6 was to be a specialty tube, produced in small quantities by very few manufacturers, mostly Sylvania for use by just a few manufacturers of shortwave portables, such as Zenith - in their Trans-Oceanics - and its short-lived rivals, such as the

Hallicrafters The Hallicrafters Company manufactured, marketed, and sold radio equipment, and to a lesser extent televisions and phonographs, beginning in 1932. The company was founded by William J. Halligan and based in Chicago, Illinois, United States. In ...

TW-1000 and the

RCA The RCA Corporation was a major American electronics company, which was founded as the Radio Corporation of America in 1919. It was initially a patent trust owned by General Electric (GE), Westinghouse, AT&T Corporation and United Fruit Comp ...

Strat-O-World and very few others. In fact, Zenith, Crosley and more than a few others used it in many radios. 1L6 based multi-band radios were made by Crosley, Airline (Montgomery Ward house-brand), Silvertone (Sears house brand), Hallicrafters, FADA, and several others. When the US military commissioned two versions of the Trans-Oceanics, they stockpiled 1L6s in the uncounted thousands, some of which still show up at surplus sales. It was offered to Zenith by Sylvania in place of the larger 1LA6 - for which Zenith made production line changes as the first Miniature-Tube T/O was starting production. The original G500 chassis was punched for a Locktal socket, Zenith changed the phenolic wafer socket to accommodate the smaller tube. NOTE: a 1LA6 (or a 1LC6) will work as a near drop-in replacement for the 1L6 with the use of an adapter socket. The closest European analog to the 1L6 is the DK92.TransOceanic, the Royalty of Radios (Bryant and Cones) 2008

References

* {{cite book , author=Radio Corporation of America , title=Receiving Tube Manual - Technical Series RC-20 , publisher =RCA Electron Tube Division, Harrison, NJ(USA) , year=1960 , id=

External links

1L6 Tube
at the Radio Museum Vacuum tubes

See also

References

External links