Description
This is a pair early VALVO RED LABEL E88CC tubes made by Siemens &Halske in Germany (Munch). Tubes have grey shield and 0-getter. Very nice tubes; one tube tests Nos, while the other tube tests strong till oké. Very reliable, long life and low noise version of a ECC88 tube only used for military or postal purposes.The properties of the Valvo E88CC are legendary and widely known. I refer to the many threads on the web for more information. The tubes are manufactured in 1962 and 1964.
Test results*
The tubes are thoroughly tested. See test results below.
| Tube 1
Section 1/2 V106 |
Ia (plate current)
Mutual conductance: Gas test, Shorts test: |
14,9 / 15,0 mA
12,5 / 11,7 mA/V OK |
= NOS
= NOS
|
| Tube 2
Section 1/2 V107 |
Ia (plate current)
Mutual conductance: Gas test, Shorts test: |
14,4/ 14,0 mA
10,4 / 9,1 mA/V OK |
= Strong
= Oké
|
* Where NOS is : Ia = 14,2 to 15,8mA, Gm= 10,5 to 14,9 mA/V.
Test methods are outline on the Tube testing page, for test conditions see Category Page.
Short description
| Tube type | E88CC |
| Quantity of Tubes | One pair |
| Brand | Valvo |
| Manufactured in | Munich, Germany |
| Date codes | A@ 1 # 2C (1962) & A@ 1 # 4C (1964) |
| Plate Construction | “Spangitter” |
| Getter Construction | 0-getter, grey shield |
| Print Condition | See pictures |
| Box included | White box |
| Equivalent tubes: | Cca 6922 |
| General test results | Oké specs |
