MULLARD BLACKBURN EZ81 6CA4 Vacuum Tubewith Square Boxed Getter with Seemed Top Glass.
Excellent silk screen White ink. In original Mullard EZ81 / 6CA4 box
TV7D/U Testing : No Shorts, No Leakage, No Gas, No Micro-phonics apparent
Minimum good on the TV7D/U scale is 40/40. Where a Vintage Factory new
Mullard EZ81 will test 60/60 (60 on each plate of the Full Wave Rectifier 2xplates)
TV7 Settings :
| EZ81/6CA4 |
6.3v |
EV0-7030 |
Bias=0 |
Shunt=59 |
Switch= A |
Press Button=7 |
Min Good=40 |
Plate #1. |
| EZ81/6CA4 |
6.3v |
EV0-1030 |
0 |
59 |
A |
7 |
40 |
Plate
#2. |
Tube 1: Etched Code 'B1C2' March 1961 - Mullard brand 'Mullard Shield Logo'
- "Made in Great Britain"
Test Results : 60.0 / 61.0
Notes: This tube tested with balanced plates and right at Vintage Mullard factory Specs
for a EZ81/6CA4 tubes.
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