Made by National Electronics (U.S.A.).
Packing : In original box.
The NOS CCa (6DJ8,6922,E88CC) National U.S.A. tubes have been checked by a calibrated Hickok 539B vacuum tube tester.
By the operating manual of the tester the typical value
of the MC (Mutual Conductance) of the NEW
CCa (6DJ8,6922,E88CC) vacuum tube is : 10.500
This is taken as 100%.
(Given for each tube System 1 and System 2 [in Micromhos]).
On each tube I placed a little white sticker with the measurement results.
MUTUAL CONDUCTANCE TEST: here we can get exact
numerical value in Micromhos.
The condition of TUT (Tube Under Test) can be expressed in percent.
For example : in case of NEW CCa (6DJ8,6922,E88CC) the listed typical
value of mutual conductance is 10.500 Micromhos.
If the TUT has 11.000, the percental condition is
(11.000/10.500) x 100% = 105 %.
Result of the mutual conductance test, as follows :
|
No |
MC |
Price Euro |
Date Codes |
Comments |
Photos |
|
001 |
Triode 1 : 12.000 = 114 % |
100.00 USD / quadrate SOLD |
|
Matched quadrate
|
|
|
Triode 2 : 12.000 = 114 % |
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|
002 |
Triode 1 : 12.000 = 114 % |
|
|||
|
Triode 2 : 12.000 = 114 % |
|||||
|
003 |
Triode 1 : 12.000 = 114 % |
|
|||
|
Triode 2 : 12.000 = 114 % |
|||||
|
004 |
Triode 1 : 12.000 = 114 % |
|
|||
|
Triode 2 : 12.000 = 114 % |
|
No |
MC |
Price Euro |
Date Codes |
Comments |
Photos |
|
005 |
Triode 1 : 12.250 = 117 % |
100.00 USD / quadrate SOLD |
|
Matched quadrate |
|
|
Triode 2 : 12.250 = 117 % |
|||||
|
006 |
Triode 1 : 12.250 = 117 % |
|
|||
|
Triode 2 : 12.250 = 117 % |
|||||
|
007 |
Triode 1 : 12.250 = 117 % |
|
|||
|
Triode 2 : 12.250 = 117 % |
|||||
|
008 |
Triode 1 : 12.250 = 117 % |
|
|||
|
Triode 2 : 12.250 = 117 % |
|
No |
MC |
Price Euro |
Date Codes |
Comments |
Photos |
|
009 |
Triode 1 : 13.000 = 124 % |
50.00 USD / pair SOLD |
|
Matched pair set |
|
|
Triode 2 : 13.000 = 124 % |
|||||
|
010 |
Triode 1 : 13.000 = 124 % |
|
|||
|
Triode 2 : 13.000 = 124 % |
TERMS:
Each tube has been packaged in two layers by
use of air insulating
wrapping paper.
So packaged tubes are housed in an international standard size box.
We use foam inside the box to preserve the tubes against bumps.
Method of payment is : USD or Euro.
Paying method:
- per PayPal,
- per Bank Transferring.
If you have any questions , I will answer as quick as possible.
Thanks for visiting.
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Last update : 2009. augusztus 21. 19:06