Philips Ultra Rare EL34 Nickelbase...
Philips Ultra Rare EL34 Nickelbase...
Philips Ultra Rare EL34 Nickelbase...
Philips Ultra Rare EL34 Nickelbase...
Philips Ultra Rare EL34 Nickelbase...
Philips Ultra Rare EL34 Nickelbase...
Philips Ultra Rare EL34 Nickelbase...

Philips Ultra Rare EL34 Nickelbase tube (77%) 1954

- Factory Code: 5x SYA

- flat ring + disc getter

- black metal base

- Eindhoven 1954

- second generation

- welded plates

- Yellow paint marked (special selected)

Last items in stock
€250.00

 

settings: Va = 250V, Vs = 250V, Vg = -13.5V , Vh = 6.3 V

a good (NOS) tube test for: Gm = 11mA/V and Ia 75 mA

Testresults:

Tube 2 : Ia = 58mA (77%)   

             Gm = 6mA/V (55%)

Date code
5xSYA
Factory
Eindhoven Holland
Year of Manufacturing
1954
Generation
2nd
General availability
Very Rare
Condition
Used (see test results)
Label markings
label & serial number readable
Tube 1 - Section 1: DC plate current in mA
58
Tube 1 - Section 1: Mutual transconductance in uMhos
6
1 Item

test

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