JAN DESIGNATION

General Electric Co,  code:33173 means :factory in Owensboro KY  x-KENRAD factory .



KenRad factory Owensboro  .  In 1945 Burlew sold the remainder of the company, the tube division, to General Electric and became GE's primary tube making facility

 







Owensboro is the home of Ken-Rad, the South's only manufacturer of electric lamp bulbs and radio tubes. Daily capacity is 30,000 lamps and 85,000 tubes.
In 1945 Burlew sold the remainder of the company, the tube division, to General Electric and became GE's primary tube making facility

old GE facility

few years ago

TELEFUNKEN

Great Sounding WEST GERMAN workhorse single tube, reproduces sound with accurate tonality. Superb choice for hifi preamps and Guitar Amps. The E83CC Long-Plate Design s a SUPERIOR-CLASS 12AX7 Low-Noise rated long-life tube made to last 10,000 HOURS OR MORE.

E83CC is Siemens Halske Munich West Germany's answer to the ECC803S!

BEAUTIFUL SOUNDING E83CC 12AX7 TUBE AS DISPLAYED

NEAR "TROPHY-QUALITY" CONDITION & PERFORMANCE

LONG-LIFE ECC803S VERSION WAS OFFERED BY SIEMENS HALSKE MUNICH IN THE 1960's as their version competing against the Telefunken ECC803S. Since Siemens couldn't use the Telefunken nomenclature they devised the E83CC instead, to signify a "Special Class" of 12AX7

YOU CAN SEE THE SIEMENS HALSKE WEST GERMAN 1966 ACID CODES ≠ IN THE GLASS ON TUBE

REAL SIEMENS FACTORY CODES:

E0O ≠6B = 1966

≠ is the symbol of the Siemens Halske Munich W. Germany factory

Raytheon

"Ray" comes from "rai," an Old French word that means "a beam of light," while "theon" comes from the Greek and means "from the gods

TUBE TESTERS AND TUBE STORAGE

UPDATED  22-jan-2022

4 of them are renovated and work properly 

 

WESTON  981 TYPE 3 

AVO 160   only AVO needs renovation 

CENTRAD ANNECY 751

 

EICO 667   new add in my collection

MILITARY TV-7D/U

tube testers 2014

 
A French made tube tester for both American and European tubes since 1950.Voltage selector 110-245v 50Hz. Dimensions H450 - 340 - D165.
Weight 7Kg












 
It was made in Canada by Stark Electronics Instruments.The TV-7 series are built like tanks and seems to me, to be one of the best designed tube testers ever made. They are based on a Hickok design and are great for testing real old tubes prior to WWII. It will test many, but not all, tubes made after WWII.






 
WestonModel 981-3 Tube Tester.

High quality components with welded steel case Tests for Mutual Conductance (Gm), Shorts, and Tube LifeTests both sections of dual section tubes without resetting selectors Seven Plate & Screen voltages up to 225 VDC and Bias voltages to -20 VDC. Four grid signals at 4000 Hz. Nice, smooth built-in roll chart6L6GC under test in pictures 4 & 5 = 2000 X 3 = 6000 micromhos. Nice case--almost mint

 





Specifications of AVO CT 160

Tests	Filament, Insulation, cathode/heater leakage resistance to 25M ohms, gas, current draw, mutual conductance.
Bases	British 4/5/7/9 pin (B4/B5/B7/B7A/B9), P type base (8SC), International Octal, Mazda Octal, UX4, UX5, UX6, UX7, American SM7, American loctal (B8B or B8G), B9D, B8D, Hivac 4 pin (SM4), Hivac 5 pin (SM5), B7G (miniature), B9A (noval), B3G, 5AA and 7AA for Acorn valves, F8, B8A, B5A. Two uncommitted clips which can be connected to top cap or side cap connections.
Mains	Selectable 105-120 in 5V steps, 175-250 in 5V steps @ 50-500Hz. AC.
Heater	0.625, 1.25, 1.4, 2.0, 2.5, 3.0, 4.0, 4.5, 5.0, 5.7, 6.3, 7.5, 10, 11, 12.6, 13, 15, 16, 18, 20, 23, 25, 28, 30, 35, 40, 45, 48, 55, 70, 80, 117
Anode	20, 40, 60, 75, 90, 100, 150, 200, 250, 300, 400
Screen	20, 40, 60, 75, 90, 100, 125, 150, 200, 250, 300
Grid	Continuously variable from 0 to -40V.
Other	Measures anode current up to 100mA, gm from 0-20mA/Vm, diode/rectifier efficiency, short circuit protected.
Weight	25 lbs

Electronic tubes stored in my warehouse, kreta, greece

 The packet as originaly delivered from the main warehouse in U.S.A. 

Here you may see 160 pieces of 5749 or 6BA6 JAN

more on testers
https://www.dos4ever.com/uTracer3/uTracer3_pag9.html