wie kent deze buis? (Gezocht)

door Oldtimer , Oegstgeest, 04.01.2018, 14:41 (2297 dagen geleden) @ henk oudenampsen
Bewerkt door Oldtimer, 04.01.2018, 14:47

EAGLE

The company “EAGLE Gesellschaft für Radiobedarf” was founded in October 1925. The adress was given as Wien VIII, Piaristengasse 17. The owners were A. Jacobi and Z. Dezsö. In a catalogue for the year 1925 “EAGLE Hochvakuumröhren” types Th5, Fr12, Dw15, HE6 and LA204 are announced. All tubes were “Dunkelstrahler” (Engl. “dark emitters”). They were designed for different uses: Th5 for universal use, Fr12 for radio frequency amplification, Dw15 for amateur use by its low heating power consumption, HE6 provided high amplification and LA204 as a loudspeaker tube. In the year 1926 the types Na4, Re3,
La204c, La306, La306c, La430, La430c, La430M, La230 and A206 were advertised.

The “Radiowelt” of 1927 introduced the new “Cold Emitter” 2 volts tubes of the EAGLE company. E206H was for radio frequency amplification, E206 for the use as audion, E203 for resistance coupled amplification, E2P for audio frequency amplification and E2PP was a loudspeaker triode. The radio catalogue 1929 of the Viennese radio-shop Eugen Goldschmidt contained a number of new EAGLE tubes. Besides tubes with the usual 2 volts, 4 volts and 6 volts direct heating by batteries, the indirectly heated tubes WG41, WG42 and WG43 to be used with AC power supplies were offered. For the operation of an AC power supply EAGLE offered the rectifier tubes FR1, FR2 and FD2. In March 1930 EAGLE changed its name to “EAGLE Radioröhrenfabrik”. On this occasion the annual production of 80.000 to 100.000 radio tubes was reported. A list of tubes for the year 1931 shows that EAGLE offers besides the usual 2 volts and 4 volts battery types of tubes also tubes for 2 volts and 4 volts AC heating. All the tubes produced until this time by the EAGLE company were triodes. However, by the end of 1931 EAGLE was in the position to produce tetrodes for radio frequency amplification and in addition a directly heated pentode which was comparable to the B443 of Philips. Gerald Tyne, famous American radio historian, mentions in his book “Saga of the Vacuum Tube” that EAGLE tubes were manufactured by Kremenezky. At this time we are not in the position to prove or disprove this. However, the fact that EAGLE stopped the tube production at about 1931/32 just at the time when Kremenezky was taken over by the WATT AG speaks for the statement of Tyne.

Electrical data of EAGLE radio tubes in the “Österreichischer Radio Amateur” (RA) and the “Radiowelt” (RW): Re3 (RW 1926/2), La306 (RW 1926/7), 430 (RW 1926/8), 430c (RW 1926/25), E206H, E206, E203W, E2P, E2PP (RW 1927/47), E206 (RW 1927/49), E404 (RW 1927/50), 4010 K (RW 1931/48).

Willem