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      Collezione   Valvole          
    106            
Tipo Marca Quantità Descrizione Commenti        
807 Sicte 1 Tubo grande          
807 Sicte 2 Tubo piccolo          
5726 Sylvania 5 Equivalente a 6AL5 / CV4007 per AVO CT 160        
6201 Mazda 1 4100/3800 (val.min.1950) Ecc81 equivalente        
7591 RCA 4   Testate OK        
12AU7 ATES     ??        
12AU7 China 2 n.1 3400/3500,n.2 3500/3400 (val.min.1950)          
12AX7 China 2 n.1 1350/1300,n.2 1400/110 (val.min.875)          
12AX7 General Electric (China) 1 1400/1100  (val.min.875)          
12AX7 ATES 1 Grey plates,1200 (val.min.875) Utilizzate sul Mentmore dx        
12AX7 RCA 1 1400 (val.min.875) Testate OK,utilizzate sul Mentmore dx        
12AX7 Philips Miniwatt 1 Ring getter,short plate cod.(I66)    2L2 : 1100/1200 (val.min.875) Utilizzate sul Mentmore sx        
12AX7A RCA 5 Grey plates          
6550 A GE 1 Triple getter ST code 3 holes (rectang.on the middle) black base tested good        
6550 A GE 2 No codes-only dots Tested good        
6550 A GE 3 n.1 RG 185-5,white printing,black base,rectangular center hole,tall bottle:95/100 micromHoms- N.2 EX78 188-5 white label printing,green printing code,black base,rectangular center hole,95/100micromHoms- N.3 E(?) 185-5 white printing,black base,round center hole:95micromHoms          
6BH6  Brimar 4 testate: 80mHoms OK        
6BH6  GE  2 testate:50mHoms Scarse        
6CA7 Sylvania 4 n.1 ring getter,n.2,3,4 dd declined getter Testate OK        
6CG7 RCA 6   Testate OK        
6GY5 GE 1 No guide pin Box originale - UNTESTED        
6J5 Sicte 1            
CV4024 Mullard ?? Blackburn 7 KQDD/K  84-05 Short gray plate,ring getter. n.1 code 654R3I1 4200/4200,n.2 code 654R3I1 3400/5100,n.3 code 654R3I1 5050/5050,n.4 code 654R3H5 4700/5300,n.5 code 654R3I1 3500/4700,n.6 code 654R3I1 4500/4600,n.7 code 654R3I1 4300/4300 (valori minimi 2500)          
CV455 Brimar 2 Equivalente a 12AT7.n.1 3500,n.2 3550 (val.min.2500)          
DAF96 Philips Miniwatt 1 Code beetwen pins: TH061 Box originale - UNTESTED        
DY802 Toshiba 1 YC on the glass Box originale - UNTESTED        
Ecc81 TFK 2 Short plate,ring getter.n.1 3400,n.2 3700 (val.min.2500) Buone        
Ecc81 Mazda 1 3200/4200 (val.min.1950)          
Ecc82 Philips Miniwatt 1 3300/short          
Ecc82 Brimar     ??        
Ecc82 Fivre 1 2200 (val.min.1950) Sospetto short in 2.a posizione        
Ecc83 TFK 4 Ribbed.Codes:Blc01,Bnc01,B3009701,B3204101 tested good        
Ecc83 Felan (China) 2 n.1 1650/1400,n.2 1700/1700 (val.min.875)          
Ecc83 TFK 2 Ring getter, n.1 1110,n.2 1220 (val.min.875) n.1 codice 703,n.2 cod.204,utilizzate sul Mcintosh C20        
Ecc83 TFK 2 Smooth,cod.B3015201(587 al top):1600/1600 (Avo al massimo)-Cod.B3015201(587 al top):1600/1600 (Avo al massimo)           
Ecc83 Siemens 1 1400/1200 (val.min.875)          
Ecc83 Philips Miniwatt 2 Old logo,ring getter,short plate,n.1 codice I66Z0A (900/1000),n.2 codice I60Z9L (1100/1000) (val.min.875)          
Ecc83 Philips Miniwatt 2 Large ring getter,short plate,n.1 cod I66     2D2 (1300/),n.2 cod.I66     1L2 (1400/) (val.min.875) Utilizzate sul Mentmore sx        
Ecc83 Philips Miniwatt 1 Large ring getter,short plate,n.1 cod I63     2C4 (1400/), (val.min.875) Utilizzate sul Mcintosh C20        
Ecc83 TFK 2 Smooth,valori buoni ma non ottimi          
Ecc83 TFK 2 Ribbed.Valori buoni ma non ottimi          
Ecc83  Fivre 1 1300/1600 (val.min.875)          
Ecc830 China 2 n.1 1700/1500,n.2 1700/1500          
EF86 Electron Tube 1            
EL 3010 Tfk 2 NOS,NIB          
GZ34 Sylvania 2 NIB,NOS da testare        
KT 88 Valve Art 4 Metal base,ottimi valori Montate sui 2 Mc75        
KT 88 GEC 4 3 getter.Code TA Z 11.000 (70mA/V)- TF Z 12.000 (75-80mA/V)- TF Z 11.500 (75mA/V)- YM Z 11.000 (70mA/V) Scatoli originali        
KT 88 IEC Mullard 1 Cod.1022-046.Triple getters:11700 (Hickok)-          
PCF200 Sicte 1            
PHC3220 Philips Miniwatt 1 Code 1L8Z952 Box originale - UNTESTED        
PL504 Neutron 1 Glass base Box originale - UNTESTED        
      EL34  Metal      
  AVO CT 160 Min.Good = 53 mA (11 mA/V)          
  HICKOCK 539B Min.Good = 3800 μmhos          
  Brand Code Base Hole in guide pin Getter Plate Avo test (mA/V) Hickock 539 B
1
 Philips Miniwatt 5K KE0 Black No hole Flat ring Folded 66-68 6750
2
 Philips Miniwatt 5X KE0 Black No hole Flat ring Folded 75m  
3
   5U KEB Black No hole Flat ring Folded 75-80   
4
   SY0 55K Black Hole Disc Welded 20-30   
5
   SYO 55F Black Hole Disc Welded 15-20  
6
   SYO 55H Black Hole Disc Welded 20-30   
7
   SY0  56L Black Hole Disc Welded 75-80   
8
 La Radiotechnique SY1  560 Brown Hole Disc Welded 75-80   
9
   SY1  56H Brown Hole Disc Welded 75-80   
10
   Dr  SYA Black No hole Flat ring Welded 70  
11
   D5 SYA Black No hole Flat ring Welded 55-60   
12
   DY SYA Black No hole Flat ring Welded 50-55 5500
13
 50 KE0 Black No hole Flat ring Folded 15-20 1200(2500)
14   SY0 56F Black Hole Disc Welded 60 6500
                 
                 
      EL34  Philips      
  Brand Code Base Hole in guide pin Getter Plate Avo test (mA/V) Hickock 539 B
1 Miniwatt Xf4  L0H Brown Hole D-D Welded 75  
2 Miniwatt Xf4  L0H Brown Hole D-D Welded 80  
3 Miniwatt Xf4 L1D Brown Hole D-D Welded 80  
4 Valvo Xf4  L0I Brown Hole D-D Welded 75  
5 Valvo Xf3  XBI Brown Hole D-D Welded 70  
6   Xf3  X9F Brown Hole D-D Welded 65  
7   Xf3  X9G Brown Hole D-D Welded 60  
8   Xf4 B0E4 (*) Black numbered No 6.th pin Hole Single ring 3 stapled 75  
9   Xf4 B0F1 (**) Black numbered No 6.th pin Hole Single ring 3 stapled 75  
10   ??? B0F1 (***) Black numbered No 6.th pin Hole Single ring 3 stapled 65 - 70  
11   ???B9C2 (****) Darkish brown numbered                             No 6.th pin No hole Single ring 5 welded - 10 dents on top spacer 65 - 70  
                 
  (*) Codice stampato a rovescio. Sigla = EL.34          
  (**) Sigla= EL.34              
  (***) 4 dents on top spacer            
  (****)  Dimple top              
                 
  Brand Code Base Hole in guide pin Getter Plate Avo test (mA/V) Hickock 539 B
1 Mullard Xf2  B9L3 (*) Black numbered.                No 6.th pin Hole Single ring 5 welded 65 - 70  
2 ? ? Xf2  B9C2 Black numbered.                No 6.th pin Hole Single ring 5 welded 65  
                 
  (*) 10 dents on top spacer            
                 
                 
      EL34 Telefunken   
        (East  Germany)        
  Brand Base Hole in guide pin Getter Plate Top glass
Avo test (mA/V)
 Hickock 539 B
1   Black No hole 2 square 7 welded (*) No dimple 40 - 50  
2 TFK Black No hole single ring 4 stapled Dimple 55 - 60  
3 TFK (1) Black No hole single ring 4 stapled Dimple 65  
4 ITT Lorenz  Black No hole single ring 4 stapled Dimple 55 - 60  
5 ITT Lorenz  Black No hole single ring 4 stapled Dimple 65  
6 RFT (M logo) (2) Black No hole single ring 4 stapled Dimple 55  
7 RTF (EK) Black No hole single ring 4 stapled Dimple 60  
8 RFT (M logo) (3) Black No hole 1 square 4 stapled No dimple 70  
9 RFT (M logo) (6) Black -short No hole (Triangle ectched on central pin) 1 disc (Foil getter) 4 stapled No dimple 65 7250
10 RFT (M logo) (6) Black -short No hole (Triangle ectched on central pin) 1 disc (Foil getter) 4 stapled No dimple 70 7250
11 RFT (M logo) (7) Black -short No hole ( 6. ectched on central pin) 1 ring 4 stapled Dimple 68 7500
12 RFT (M logo) (8) Black -short No hole ( 184 ectched on central pin) 1 ring 4 stapled Dimple 18 900
13 TFK (4) Black No hole single ring 4 stapled Dimple 60  
14 TFK (4) Black No hole single ring 4 stapled Dimple 60  
15 TFK  Black No hole single ring 4 stapled Dimple 60  
16 TFK Black No hole single ring 4 stapled Dimple 55 - 60  
17 TFK(5) Black No hole single ring 4 stapled Dimple 60 - 65  
18
 TFK Black No hole single ring 4 stapled Dimple 50 - 55  
                 
                 
                 
  (1) Date code 91025            
  (2) TGL9649 Date code 415098            
  (3) Date code 116108            
  (4) Date code 71025            
  (5) Date code 7102….            
  (6) Date code 010064              
 

(7) TGL9649

Date code 430202

(8) TGL9649

Date code 429195

 

 

 

              
    EL34  by EI - SVETLANA - SOVTEK     
  Brand Base Hole in guide pin Getter Plate Top glass Avo test (mA/V) Hickock 539 B
1 Siemens Black -No 6th Pin Hole Disc 9 welded Closed getter 60  
2 Siemens Black -No 6th Pin Hole Disc 9 welded Closed getter 60  
4 Svetlana "C" wing. Brown No 6th Pin No hole 2 saucer Welded Dimple 60  
5 Svetlana "C" wing. Brown No 6th Pin No hole 2 saucer Welded Dimple 60  
6 Svetlana "C" wing. Brown No 6th Pin No hole 2 saucer Welded Dimple 60  
7 Svetlana "C" wing. Brown No 6th Pin No hole 2 saucer Welded Dimple 60  
8 Sovtek Black -No 6th Pin No hole 2 saucer 4 Stapled     7000-7500
  Svetlana n.4 - n.5 Date code : 0349           
Svetlana n.6 - n.7 Date code : 0403          
               
            EL34  by TESLA        
    Base Hole in guide pin Getter Plate Top glass Avo test (mA/V) Hickock 539 B
  Brown No hole 2 overlapped ring 5 welded   70-72 mA
8000-8500
  Brown No hole 2 overlapped ring 5 welded   54-56 mA
7250
  Blackish-brown No hole 2 overlapped ring 5 welded   68-70 mA
7250
  Brown No hole 2 overlapped ring 5 welded  

75-80 mA

8750
  Brown No hole 2 overlapped ring 5 welded  

75-80 mA

8750
       

EL34 

 by HITACHI        
    Base Hole in guide pin Getter Plate Top glass Avo test (mA/V) Hickock 539 B
  Black Missing guide pin 1 large ring  3 stapled     8000-8500