Mini-Museum of Japanese Radios/日本のラジオのミニ博物館

Tube Index (2) American Type Alpha-Numeric Names/

真空管の索引-(2) 米国型英数字名

2nd edition (2007.10.5), (2007.11.11)

1st edition (2001.7.10)+(2002.12.18)+(2002.12.28)+(2003.4.19)+(2003.5.17)

HomeTube_Index_20.html

written by Koji HAYASHI, Ibaraki JAPAN

Index/索引

2. Alphabetic Name Tubes -American Type and Japanese Origin/英字管-米国型と日本独自

2A. 1-Letter/1文字管

2B. Japanese Transformerless 1-letter/日本のトランスレス用1文字管

5A. American EIA Alphabetic 1-letter Name tubes/米国型英字1文字管

5B. American EIA Alphabetic 2-letter Name tubes/米国型英字2文字管

Return to Tube Gallery/真空管展示室に戻る

Table2A. Early-Time 1-Letter Alphabetic American and Japanese Tube/(米国と日本の)初期の1文字英字管

Table 2A-(A-D).

No.	Name	Outline	Ef	Class	Proto type	Page	Maker
A3	2A3 CH-2A3	ST 4pin	2.5V	Power Triode	- 2A3	- Direct_heat	- Shunguang
A3 (J)	UX-2A3	ST 4pin	2.5V	Power Triode	2A3	Radio_tube_13B Direct_heat	Matsuda After WWII Matsuda, TEN, Matsushita, NEC, TVC
A3	6A3	ST 4pin	6.3V	Power Triode			-
A3H	2A3H	ST 4pin	2.5V IDH			Radio_tube_13B	Unknown
A3B (J)	UY-6A3B	ST50 5pin	6.3V IDH	Twin Power Triode	6A3	Radio_tube_2_IndMil	Matsuda
A4	1A4P	ST12 4pin	2.0Vdc	Vari-mu Pentode		Radio_tube_35A	RCA
A4 (J)	UX-1A4	ST12 4pin	2.0Vdc	Vari-mu Pentode	1A4P	Radio_tube_35A
A5	2A5	ST14 6pin	2.5V IDH	Power Pentode	-	Radio_tube_3_PenOpt	-
A5 (J)	UZ-2A5, 2A5	ST14 6pin	2.5V IDH	Power Pentode	2A5	Radio_tube_3_PenOpt	Matsuda, Elevam, Toyo After WWII; Matsuda, DON, Star, Hitachi
A5B (J)	UZ-2A5B	ST	2.5V IDH	Power Pentode	-	Radio_tube_3_PenOpt	(DON)
A5	6A5-G	ST Octal	6.3V IDH	Twin Power Triode	6A3	Radio_tube_13B	Raytheon
A6	1A6	ST	2.0Vdc	Converter	-	Radio_tube_35A	Sylvania
A6 A6B (J)	(UZ) 1A6 (UZ) 1A6B	ST	2.0V dc	Converter	1A6	Radio_tube_35A	Tou Tou
A6	2A6	ST 6pin	2.5V IDH	Dual Diode Triode		Radio_tube_32_super	-
A6 (J)	UZ-2A6	ST 6pin	2.5V IDH	Dual Diode Triode		Radio_tube_32_super	Matsuda
A6	6A6	ST 7pin	6.3V IDH	Twin Power Triode	53	Radio_tube_32_63IMa	KR
A6 (J)	UT-6A6	ST 7pin	6.3V IDH	Twin Power Triode	UT-53	Radio_tube_32_63IMa	Matsuda
A7	2A7, 6A7	ST 7pin	2.5V IDH 6.3V IDH	Converter
A7 (J)	Ut-2A7, 2A7 Ut-6A7 (BX-6A7), 6A7	ST 7pin	2.5V IDH 6.3V IDH	Converter	2A7 6A7	Radio_tube_32_super	Matsuda, DON After WWII; Matsuda, Futaba
A8	6A8	Metal	6.3V IDH	Converter	6A7	Radio_Tube_Metal	Radiotron (die)
A8 (J)	US-6A8, MC-812A	Metal	6.3V IDH	Converter	6A8	Radio_Tube_Metal	(Matsuda), (NEC)
B4	1B4P	ST 4pin	2.0Vdc	Pentode	32	Radio_tube_35A	Sylvania, TungSol, Adzam
B4 (J)	UX-1B4	ST 4pin	2.0Vdc	Pentode	1B4P	Radio_tube_35A
B5	1B5/25S	ST 6pin	2.0Vdc	Twin Diode Medium mu Triode	-	Radio_tube_35A	RCA
B7	2B7, 6B7	ST12 7pin	2.5V IDH 6.3V IDH	Diode Pentode	-	Radio_tube_32_super
B7 (J)	Ut-2B7, Ut-6B7, 6B7	ST12 7pin	2.5V IDH 6.3V IDH	Diode Pentode	2B7, 6B7	Radio_tube_32_super	Matsuda After WWII; Matsuda, NEC
B8	6B8	Metal	6.3V IDH	Twin Diode Pentode	6B7
B8 (J)	US-6B8	Metal	6.3V IDH	Twin Diode Pentode	6B8	Radio_tube_2_Jmetal	Matsuda
C5	6C5	Metal	6.3V IDH	Triode	-	Radio_Tube_Metal	Unknown (die), GE
C5 (J)	US-6C5, TB-818A	Metal	6.3V IDH	Triode	6C5	Radio_tube_2_Jmetal	Matsuda
C6	1C6	ST	2.0Vdc	Converter	1A6	Radio_tube_35A	TungSol
C6B (J)	UZ-1C6B	ST	2.0V dc	Converter	1C6	Radio_tube_35A	Matsuda
C6	6C6	ST12 6pin	6.3V IDH	Pentode	77	Radio_tube_32_super	Haltron
C6 (J)	UZ-6C6, (=MC-670A) 6C6	ST12 6pin	6.3V IDH	Pentode	6C6	Radio_tube_32_super	Matsuda (NEC) After WWII;

D5	1D5-GP	ST Octal	2.0Vdc	Pentode	1A4	Radio_tube_35A	Philco, RCA
D6	6D6	ST12 6pin	6.3V IDH	Vari-mu Pentode	78	Radio_tube_32_super	United
D6	UZ-6D6, (=MC-671A =RT3), 6D6	ST12 6pin	6.3V IDH	Vari-mu Pentode	6D6	Radio_tube_32_super	Matsuda, (NEC), (Mitsubishi) After WWII;
D7	1D7G	ST octal	2.0V dc	Converter	1A6		Word Super Airline

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Table 2A-(E-X).

No.	Name	Outline	Ef	Class	Proto type	Page	Maker
E5	6E5		6.3V IDH	Magic Eye			RCA, Sylvania
E5 (J)	EZ-6E5/6E5
E5-M (J)	6E5-M (6M-E5)
E5-MT (J)	6E5-MT (6M-E2)
E5-P (J)	6E5-P (6M-E4)
E5-W (J)	6E5-W (6Z-E1)
E7	1E7G	ST	2.0Vdc	Twin Po Pentode	-	Radio_tube_35A	Philco
F4	1F4	ST14	2.0Vdc	Power Pentode	-	Radio_tube_35A	Sylvania
F4 (J)	UY-1F4	ST14	2.0Vdc	Power Pentode	1F4	Radio_tube_35A
F6	1F6	ST	2.0Vdc	Twin Diode SCO Pentode		Radio_tube_35A	Cunningham
F6	6F6	Metal	6.3V IDH	Power Pentode	42	Radio_Tube_Metal	RCA
F6 (J)	US-6F6, MB-816A	Metal	6.3V IDH	Power Pentode	6F6
F7	6F7	ST 7pin	6.3V IDH	Triode Pentode	-	Radio_tube_32
F7 (J)	Ut-6F7	ST 7pin	6.3V IDH	Triode Pentode	6F7	Radio_tube_32	Matsuda, Kawanishi
F7A (J)	US-6F7A, MC-804A	Metal	6.3V IDH	Triode Pentode	6F7	Radio_tube_2_Jmetal	Matsuda, NEC
G5	6G5		6.3V IDH	Tuning Eye
G5 (J)	EZ-6G5	ST					Matsuda
H4	1H4-G						RCA
H6	1H6-G	ST Octal	2Vdc	Twin Diode Medium mu Triode	1B5/25S	Radio_tube_35A	CBS-Hytron
H6	6H6 6H6-G	Metal Glass Octal	6.3V IDH	Twin Diode	-	Radio_Tube_Metal	GE -
H6 (J)	US-6H6, DB-817A	Metal	6.3V IDH	Twin Diode	6H6		(Matsuda), (NEC)
H6A (J)	Kt-6H6A	T 7pin	6.3V IDH	Twin Diode	6H6-G	Radio_tube_32_63IMb	Matsuda
J5	6J5, VT94/6J5		6.3V IDH	Triode
J5 (J)	US-6J5
J6	1J6G	ST	2V dc	Twin Power Triode	19	Radio_tube_35A	Emerson, Sylvania
J7	6J7	Metal	6.3V IDH	Pentode	77
J7 (J)	US-6J7, MC-810A	Metal	6.3V IDH	Pentode	6J7	Radio_tube_2_Jmetal	Matsuda
K7	6K7 / VT86	Metal	6.3V IDH	Vari-mu Pentode		Radio_Tube_Metal	RCA-Cun (die), RCA-Vic, Radiotron, Kenrad VT86/6K7
K7 (J)	US-6K7, MC-811A	Metal	6.3V IDH	Vari-mu Pentode	6K7	Radio_tube_2_Jmetal	Matsuda
L7	6L7, 6L7-G	Metal	6.3V IDH	Mixer
L7 (J)	US-6L7	Metal	6.3V IDH	Mixer	6L7	Radio_tube_2_Jmetal	Matsuda
L7G (J)	Ut-6L7G	ST 7pin	6.3V IDH	Mixer	6L7G	Radio_tube_32_63IMb	Matsuda After WWII; NEC
L6	6L6	Matal	6.3V IDH	Beam Power
L6A	UZ-6L6A	ST 6pin	6.3V IDH	Beam Power	6L6-G	Radio_tube_32_63IMb	Matsuda
P7	6P7-G	ST octal	6.3V IDH	Triode Pentode	6F7
P7G (J)	UG-6P7G	ST octal	6.3V IDH	Triode Pentode	6P7-G	Radio_tube_32_63IMb	Matsuda
Q7	6Q7	Metal	6.3V IDH	Twin Diode Triode			Wards (die)
Q7 (J)	US-6Q7, MC-813A	Metal
U5	6U5/6G5	T 6pin	6.3V IDH	Magic Eye			GE
U5 (J)	6U5/6G5	T 6pin
V	1V		6.3V IDH	Halfwave Rectifier
V (J)	KX-1V
V6	6V6, 6V6Y	Metal	6.3V IDH	Beam Power	-	Radio_Tube_Metal	Unknown
V6 (J)	US-6V6	Metal	6.3V IDH	Beam Power	6V6	Radio_tube_2_Jmetal	Matsuda
Y5	25Y5	ST 6pin	25V IDH	Rectifier Doubler		Radio_tube_33_us	Unknown
Z3	5Z3 /VT-145	ST 4pin	5V	Fullwave Rectifier		Radio_tube_13B Audio_REC_US	RCA
Z3 (J)	KX-5Z3, 5Z3	ST 4pin	5V	Fullwave Rectifier		Radio_tube_13B Audio_REC_US	Matsuda, NEC, Matsushita, Futaba,
Z4	5Z4	Timnie oct Metal	5V IDH	Fullwave Rectifier		Radio_Tube_Metal	RCA (Die)
Z4	84/6Z4	ST 5pin	6.3V	Fullwave Rectifier	84	Radio_tube_32_36to39	National Union
Z5	25Z5 25Z5GT	ST 6pin	25V IDH	Rectifier Doubler	-	Radio_tube_33_us	RCA, Tung-Sol, Fivre
Z5 (J)	KZ-25Z5	ST 6pin	25V IDH	Rectifier Doubler	25Z5	Radio_tube_33_us	Matsuda
Z7	6Z7G	ST Octal	6.3V	B-class PP amp			RCA

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Table2B. Japanese Transformerless 1-letter/日本のトランスレス用1文字管

Table2B.

No.

Ef

Class

American Type ST

American Type S

Japanese Compatible [RefA]

Japanese Original [RefB]

36,

37,

39

43

25Z5

6.3V IDH

6.3V IDH

6.3V IDH

6.3V IDH

25V/0.3A IDH

SCO Tetrode

Medium mu Triode

RCO Pentode

Power Pentode

Rectifier Doubler

236

237

239

43

25Z5

UY-236 (Tos, Don)

UY-237 (Tos, Don)

-

-

-

UY-36 (elv)

-

UY-39(elv)

UZ-43 (Tos, Don)

KZ-25Z5 (Tos, Don, elv))

77, 78

6.3V IDH

SCO Pentode

RCO Pentode

77

78

-

UZ-77

UZ-78

(Tos), (DON)

B1, B2, B3, B4, B5

IDH

Unknown

UY-36, UY-37, UY-38, UY-39, UZ-25Z5

-

UX-B1, UX-B2, UY-B3 (UY-35), UY-B4, UZ-B5 (Best)

C3, C4, C5

each 25V/ 0.3A IDH

Triode, Tetrode, Pentode

-

UY-25C3, UY-25C4, UY-25C5 (UZ-25A5), KX-25Z5 (HW)

3D, 3K

4R, 4D, 4K

3 tube Total 100V

4 tube Total 100V

Unknown

Unknown

UY-36, UZ-43, UZ-25Z5

UY-36, UY-37, UZ-43, UZ-25Z5

-

TY-3D, TZ-3D, TZ-3K

TY-4R, TY-4D, TZ-4D, TZ-4K (DON)

[RefA]池谷理,受信管物語(15), [RefB](HW)+(DON)藤室衛, 真空管半代記による

DON/ドン真空管, elv;エレバム, HW;HW真空管, Best;ベスト, Tos;東芝

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5A. American EIA Alphabetic 1-letter Name tubes/米国型英字1文字管

Table 5D Transmitting Tubes (A to Z)

	American		Japanese
B		B Beam	1B15, 2B29(829B), Toshiba, Fujitsu 2B32(832 np, 832A), JRC 2B33(5833), NEC 2B39, 2B46(6146), RCA, NEC, Toshiba 2B52(6252), NEC 2B94(5894) Toshiba, NEC
C Triode	2C22(7193), 2C46, 2C53
D Tetrode	2D21, 3D21B
E Pentode	2E24, 2E26, 2E30, 2E36
F		F
G	2G21	Gas	2G21SF 4G63A(5563A), 4G93(393A)
K		Rectifier	1K22(2X2A)
P		Pentode
T		Triodde	2T12P
X	2X2A

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Table 5A Receiving Tubes (A-Z)

		2nd Numeric
Alpha		1 to 2	3	4	5	6	7	8 to 10
A	USA EAI	85A1 0A2 20A2 85A2	2A3 3A3 19A3/HY92 audio, radio 31A3/UY41	0A4G 1A4P (np), 1A4T, 3A4 nec, Matsuda 7A4	1A5G,1A5GT (np) 2A5, 3A5 hit 6A5G 30A5/HL94, detail 45A5/UL41	1A6 Sylvania 2A6, 6A6, 7A6 12A6/VT134, 12A6-GTY (np) 21A6/PL81 26A6	1A7G, 1A7GT (np) 2A7, 6A7 7A7 12A7 26A7GT	6A8, 6A8GT, 12A8GT(np) 7A8 8A8, 17A8, 16A8, 32A8
A	JPN OLD		UX-2A3 UY-6A3B Matsuda	UX-1A4 (np)	UZ-2A5 Matsuda, Star, UZ-2A5B	1A6 Tou, 1A6B Tou UZ-2A6 UT-6A6	Ut-2A7, Ut-6A7 Matsuda, Ut-6A7	US-6A8 (np)
B	USA	0B2	1B3GT	1B4P Sylvania, 1B4T 3B4, 3B4WA, 3B4/CV2440 /DL98 12B4A	1B5/25S (np) 50B5 USA	7B6		6B8 7B8 8B8 8B10
B	JPN			UX-1B4			Ut-2B7, Ut-6B7	US-6B8
C	USA	0C2	0C3/VR105	6C4 USA 3C4/DL96	1C5G, 1C5GT (np) 6C5, 6C5GT (np) 7C5 35C5, 50C5	1C6 TungSol 6C6 7C6 26C6		12C8, 6C9, 17C9
C	JPN				US-6C5, 6C5GT Japan	UZ-1C6B Matsuda UZ-6C6 Matsuda
D	USA			6D4 12D4	1D5-GP Philco	1299/3D6 6D6 26D6		19D8/UCH81
D	JPN					UZ-6D6 Matsuda
E	USA				6E5 RCA, Sylvania, 25E5/PL36		1E7G Philco	6E8MG (np)
E	JPN				EZ-6E5, 6E5D, 6E5M, 6E5MT, 6E5P, 6E5W

		2nd Numeric
Alpha		1 to 2	3	4	5	6	7	8 to 10
F	USA EIA			1F4 Sylvania	6F5	1F6 (np) 6F6, 6F6G (no sample), 6F6GT (np),	6F7 7F7, 14F7
F	JPN			UY-1F4 (np)		6F6GT Japan audio	Ut-6F7 Matsuda, Kawanishi, US-6F7A
G	USA		0G3 1G3GT/1B3GT, 1G3GT/1K3		6G5	6G6G audio
G	JPN				EZ-6G5
H	USA EIA		1H3/DM90		1H5G (np)	1H6G (np) 6H6, 6H6-GT (np)
H	JPN					US-6H6, Kt-6H6A 6H6-GT Japan
J	USA EIA			6J4, 6J4WA	6J5, VT94/6J5, 6J5GT, 6J5GT/G	1J6G (np) 6J6, 5J6	6J7, (1620), 6J7G 6J7GT(np), 7J7 12J7GT (np)	6J8G (np)
J	JPN				US-6J5		US-6J7
K	USA		1K3/1G3GT			6K6, 6K6GT	6K7 RCA-Cun, RCA-Vic, Radiotron, Kenrad VT86/6K7 6K7G 6K7GT/VT86B, 12K7GT (np) 14K7/UCH42	6K8/VT167, 6K8GT, 6K8G (np) 12K8
K	JPN					6K6GT	US-6K7
L	USA EIA			1L4 6L4		6L6, 6L6G, 6L6GT, 25L6(1632), 25L6GT, 25L6GT/G (np), 35L6GT (np), 50L6GT (np)	6L7, 6L7G (no sample) 14L7/UBC41 32L7GTG (np) 117L7GT/ 117M7GT	12L8GT
L	JPN					UZ-6L6A 35L6GT/M Matsushita	US-6L7 Ut-6L7G Matsuda
M	USA		1M3/DM70					6M11
N	USA		1N3/DM71		1N5G, 1N5GT (np)		6N7 (VT96) 7N7	6N8/EBF80
N	JPN				1N5-SF
P	USA				6P5GT		6P7
P	JPN						UG-6P7G Matsuda
Q	USA			3Q4	1Q5GT, 3Q5GT (np)		6Q7 6Q7G (np), 6Q7GT (np), 12Q7GT (np) 7Q7

		2nd Numeric
Alpha		1 to 2	3	4	5	6	7	8 to 10
R	USA		34R3/HY81	1R4/1294 5R4GY, 5R4GYA	1R5 USA, Japan,		6R7, 7R7, 14R7
R	JPN				1R5-SF/1AQ5
S	USA	1S2/DY88		1S4, 3S4 6S4A	1S5			6S8GT (np)
S	JPN			3S4-SF/3W4	1S5-SF/1AR5
T	USA			1T4	1T5GT (Philco)			19T8/HABC80 6T10
T	JPN			1T4-SF/1AM4
U	USA			1U4 5U4G, 5U4GB	1U5 6U5/6G5, GE		6U7G	5U8, 6U8, 6U8A 6U10
U	JPN				1U5SF/1AS5 EZ-6U5/6G5
V	USA	1V 1V2	6V3A	5V4G 6V4 (EZ80)		1V6 6V6, 6V6Y, 6V6GT, 6V6GT/6V6G, 6V6GT/G, 6V6GTA, 12V6GT
V	JPN	KX-1V				US-6V6
W	USA			3W4/3S4-SF 6W4- GT 35W4 USA, Japan
W	JPN
X	USA	1X2A, 1X2B		6X4 audio, radio, 6X4/EZ90	6X5GT/G/VT126B, 6X5GT (np),		7X7	6X9/ LCF200
X	JPN	1K22/2X2A			6X5GT japan
Y	USA		5Y3G (no sample), 5Y3GT (np), 5Y3WGTA 19Y3/PL82	3Y4/DL97 7Y4	25Y5	6Y6G 50Y6GT (np)
Y	JPN		5Y3G
Z	USA	1Z2	5Z3 17Z3/PY81 117Z3	0Z4 5Z4 6Z4/84, 7Z4 35Z4GT (np)	25Z5 Tung-Sol, 25Z5GT Fivre 35Z5GT (np), 35Z5GT/G	25Z6GT (np), 25Z6GT/G (np)
Z	JPN		KZ-5Z3	5Z4GT Japan	KZ-25Z5 35Z5GT/M Matsushita

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5B. American EIA Alphabetic 2-letter Name tubes/米国型英字2文字管

Table 5B Receiving Tubes (AB to AZ)

		2nd Numeric
Alpha		1 to 2	3	4	5	6	7	8 to 11
AB				9AB4 (UC92)		1AB6/DK96	6AB7/1853	6AB8/ECL81 6AB9, 17AB9
AC	US				1AC5/DK92 12AC5/UF41	1AC6/DK92 12AC6	6AC7/1852, 6AC7, 6AC7W, 6AC7/6134	6AC10
AC	JP						6AC7GT Japan,
AD		1AD2		1AD4 (DF62) 6AD4		12AD6 USA, Japan	12AD7
AE			30AE3/PY88					12AE10
AF			6AF3	6AF4A		6AF6G	7AF7
AG	US				6AG5		6AG7, 6AG7/VT247, 6AG7GT
AG	JP				1AG5SF
AH				6AH4GT	1AH5/DAF96	6AH6 Early-time, 6AH6V 6AH6WA	12AH7GT/VT207
AJ				1AJ4/DF96	1AJ5 6AJ5	12AJ6 6AJ6	12AJ7/HCH81	6AJ8/ECH81
AK					6AK5 Early-time, normal, 6AK5W	6AK6		6AK8/EABC80 6AK10
AL					6AL5 USA, 3AL5, 12AL5			6AL11
AM			36AM3, 36AM3A, 36AM3B	1AM4/1T4SF		6AM6		6AM8
AN				6AN4	1AN5/DF97		7AN7/PCC84	6AN8, 5AN8

	2nd Numeric
Alpha	1 to 2	3	4	5	6	7	8 to 11
AP
AQ		16AQ3/XY88, 20AQ3A		1AQ5/1R5SF 6AQ5 audio, USA radio, Japan radio 6AQ5A, 5AQ5, 12AQ5 USA		6AQ7	6AQ8/ECC85, 9AQ8/PCC85, 26AQ8/UCC85
AR			5AR4/GZ34	1AR5/1S5-SF 6AR5 audio, radio			6AR8 6AR11, 8AR11
AS				1AS5/1U5-SF 6AS5	6AS6	6AS7G	6AS11
AT	3AT2				6AT6, 12AT6	6AT7, 12AT7/ECC81, 12AT7WA, 12AT7WB
AU			19AU4, 19AU4GTA	6AU5GT	6AU6 USA, japan, 3AU6, 12AU6, 6AU6A, 6AU6LA	7AU7, 12AU7 Early-time, 12AU7A, 12AU7WA	6AU8
AV					6AV6 USA, Japan, inside view 12AV6 USA, Japan, 3AV6	12AV7
AW							6AW8, 6AW8A, 8AW8A
AX			6AX4GT, 6AX4GTA 12AX4-GTA			12AX7 Early-time, 12AX7/ECC83, 12AX7A
AY		17AY3A				12AY7
AZ			5AZ4			12AZ7, 12AZ7A

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Table 5B Receiving Tubes (BA to BZ)

	2nd Numeric
Alpha	1 to 2	3	4	5	6	7	8 to 11
BA					6BA6 USA, Japan, Inside view, 12BA6 USA, Japan
BC						6BC7	4BC8
BD					6BD6 USA, Japan, 12BD6		15BD11
BE		17BE3			6BE6 USA, Japan, 12BE6 USA, Japan, Inside view, 3BE6	6BE7 (EQ80)
BF					6BF6 USA, 12BF6		12BF11
BG					6BG6G, 6BG6GA
BH					6BH6	12BH7A	6BH11
BJ					6BJ6
BK			6BK4, 6BK4A, 6BK4B, 6BK4C	6BK5		6BK7B
BL							6BL8
BM							6BM8/ECL82, 50BM8 8BM11
BN				6BN5/EL85	6BN6, 3BN6		6BN8 6BN11

	2nd Numeric
Alpha	1 to 2	3	4	5	6	7	8 to 11
BQ				6BQ5/EL84, 8BQ5	6BQ6GT, 6BQ6GA, 6BQ6GTA, 6BQ6GTB, 6BQ6GTB/6CU6, 12BQ6GTA 12BQ6GTB, 25BQ6GTB, 25BQ6GTB/25CU6	6BQ7A, 4BQ7A	8BQ11
BR		6BR3/6RK19, 12BR3/12RK19, 17BR3/17R-K19		6BR5 (EM80)		12BR7
BS	3BS2 A	6BS3A
BT		12BT3	6BT4/EZ40				11BT11
BU						12BV7	8BU11
BV
BW							6BW11
BX					6BX6	6BX7GT
BY		12BY3		6BY5GA		12BY7A
BZ					6BZ6, 3BZ6	6BZ7

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Table 5B Receiving Tubes (CA to EZ)

	2nd Numeric
Alpha	1 to 2	3	4	5	6	7	8 to 11
CA			6CA4/EZ81			6CA7/EL34
CB				6CB5, 6CB5A	6CB6, 3CB6, 6CB6A
CD					6CD6, 6CD6GA, 26CD6GB	6CD7/EM34
CG		6CG3, 19CG3, 25CG3, 6CG3/6CF3/6CD3				6CG7	6CG8, 5CG8
CH		6CH3
CJ		6CJ3/6DW4B		6CJ5/EF41
CK			6CK4	6CK5/EL41
CL					6CL6		5CL8A
CM			6CM4	6CM5/EL36		6CM7
CN				12CN5	EL38/6CN6

	2nd Numeric
Alpha	1 to 2	3	4	5	6	7	8 to 11
CR					12CR6
CS						6CS7
CT				12CT5
CU			5CU4	12CU5, 17CU5	6CU6	6CU7/ECH42
CV		3CV3				6CV7/EBC41
CW			6CW4	6CW5/EL86, 8CW5, 10CW5, 15CW5/PL84, 30CW5		6CW7/ECC84
CX					12CX6		8CX8
CY				6CY5
CZ				5CZ5

	2nd Numeric
Alpha	1 to 2	3	4	5	6	7	8 to 11
DA				6DA5/EM81	6DA6/EF89
DE						6DE7, 10DE7
DG			3DG4		6DG6
DJ							6DJ8/ECC88, 7DJ8
DK					6DK6, 3DK6
DN				26DN5
DQ				6DQ5, 26DQ5	12DQ6A, 6DQ6B		15DQ8/PCL84
DR						6DR7
DT					6DT6, 3DT6, 6DT6A, 4DT6A		12DT8
DU						12DU7
DW			6DW4A, 12DW4A, 6DW4B
DX							6DX8, 10DX8
DY				6DY5/EL82			12DY8
DZ			6DZ4		12DZ6

	2nd Numeric
Alpha	1 to 2	3	4	5	6	7	8 to 11
EA				6EA5			5EA8
EB							8EB8, 10EB8/10GN8
EC			42EC4/PY500
ED				12ED5
EG						10EG7
EH				50EH5		6EH7, 3EH7, 4EH7
EJ						6EJ7, 3EJ7, 4EJ7
EM				6EM5, 8EM5	12EM6	6EM7
EW					6EW6, 4EW6	6EW7, 10EW7	17EW8/HCC85

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Table 5B Receiving Tubes (FA to HZ)

	2nd Numeric
Alpha	1 to 2	3	4	5	6	7	8 to 11
FD						13FD7
FG				6FG5
FM					12FM6	6FM7, 15FM7
FQ						6FQ7, 8FQ7, 12FQ7
FV				6FV5, 35FV5/PL136
FW				6FW5	18FW6A
FX				12FX5
FY						6FY7

	2nd Numeric
Alpha	1 to 2	3	4	5	6	7	8 to 11
GB				6GB5/EL500, 18GB5/LL500, 27GB5/PL500
GC				6GC5
GD				34GD5
GF						6GF7A, 10GF7A
GH							5GH8, 6GH8, 5GH8A, 6GH8A, 9GH8A
GK				2GK5, 3GK5, 4GK5, 6GK5	6GK6, 10GK6
GM					6GM6, 4GM6		ECC86/ 6GM8
GN						12GN7A/12HG7A	8GN8
GS						4GS7, 5GS7, 6GS7, 7GS7
GT				17GT5
GU				6GU5		6GU7
GV				17GV5			10GV8/LCL85, 18GV8
GW							6GW8/ECL86, 14GW8/PCL86
GX						4GX7
GY				16GY5	6GY6	33GY7, 33GY7A

	2nd Numeric
Alpha	1 to 2	3	4	5	6	7	8 to 11
HA				2HA5, 3HA5, 6HA5
HB						6HB7
HE				6HE5		33HE7, 38HE7
HG						12HG7	7HG8
HJ				6HJ5
HM				2HM5/2HA5
HQ				6HQ5
HS					19HS6
HU				26HU5
HV				6HV5A
HZ					6HZ6, 5HZ6

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Table 5B Receiving Tubes (JA-MZ)

	2nd Numeric
Alpha	1 to 2	3	4	5	6	7	8 to 11
JA				6JA5
JB				6JB5, 6JB5/6HE5
JC				6JC5, 6JC5/6JB5/6HE5	4JC6
JD					4JD6
JE					6JE6A, 6JE6C
JH				6JH5	6JH6
JM					6JM6
JN					6JN6, 17JN6
JQ					12JQ6
JS					6JS6A, 21JS6A, 23JS6A, 31JS6A, 6JS6B, 6JS6C
JU							6JU8, 6JU8A
JV							6JV8, 8JV8
JW							9JW8
JX							6JX8
JY					50JY6		10JY8
JZ					21JZ6		6JZ8, 12JZ8, 13JZ8, 17JZ8

	2nd Numeric
Alpha	1 to 2	3	4	5	6	7	8 to 11
KA							6KA8
KD					6KD6, 30KD6, 40KD6
KG					6KG6/EL505, 6KG6A/EL509, 40KG6A/PL509
KM					6KM6
KN							4KN8/4RHH8
KQ					21KQ6/LL521, 29KQ6, 29KQ6C
KR							6KR8, 10KR8
KV					17KV6A
KX					9KX6

	2nd Numeric
Alpha	1 to 2	3	4	5	6	7	8 to 11
LA			1LA4 (np)		1LA6 (np)
LB					6LB6
LC					1LC6 (p)		6LC8
LE					29LE6
LF			3LF4 (np)		6LF6		6LF8
LG
LH			1LH4 (p)
LN				1LN5 (p)			6LN8
LQ					6LQ6
LR							6LR8, 21LR8
LS					8LS6
LU							6LU8, 16LU8, 21LU8
LX							6LX8
LY					11LY6
	6LT-06

	2nd Numeric
Alpha	1 to 2	3	4	5	6	7	8 to 11
MD					6MD6		6MD8
MF							15MF8
MS							11MS8

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Table 5B Receiving Tubes (NA-RZ)

	2nd Numeric
Alpha	1 to 2	3	4	5	6	7	8 to 11
NA to NZ
PA to PZ
QA to QZ
RA to RZ

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Table 5B Receiving Tubes (SA to SZ)

		2nd Numeric
Alpha		1 to 2	3	4	5	6	7	8 to 11
SA	US						6SA7, 6SA7GT, 6SA7GT/G, 12SA7, 12SA7Y, 12SA7GT/G
SA	JP						6SA7GT, Japan,12SA7GT/M
SB	US						6SB7Y
SC	US						6SC7
SD	US
SD	JP						6SD7GT Japan
SF	US				6SF5, 6SF5-GT (np)
SG	US						VT209/12SG7, 12SG7Y
SG	JP						12SG7GT Japan
SH	US						6SH7, 12SH7/VT288
SH	JP						6SH7GT Japan
SJ	US						6SJ7, 6SJ7/VT116, 6SJ7Y, 6SJ7GT, 6SJ7GT/G, 12SJ7GT
SJ	JP						6SJ7GT, Japan,
SK	US						6SK7, VT117, 6SK7Y, 6SK7GT, 6SK7GT/G, 12SK7/VT131, 12SK7GT
SK	JP						6SK7GT/G ,12SK7GT Japan, 12SK7GT/M
SL	US						6SL7GT, 12SL7GT/G (np)
SN	US						6SN7GT (np), 6SN7/VT231, 6SN7GTB
SQ	US						6SQ7, 6SQ7GT, 12SQ7, 12SQ7GT 12SQ7GT/G,
SQ	JP						6SQ7GT, 12SQ7GT Japan,12SQ7GT/M
SR	US						6SR7/VT233 12SR7/VT133
SS	US						6SS7
SW	US						12SW7
SY	US						12SY7

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Table 5B Receiving Tubes (TA-ZY)

	2nd Numeric
Alpha	1 to 2	3	4	5	6	7	8 to 11
TA to TZ
UA to UZ
VA to VZ
WA to WZ
XA to XZ
YA to YZ
ZA to ZY

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No.	Ef	Class	American Type ST	American Type S	Japanese Compatible [RefA]	Japanese Original [RefB]
36, 37, 39 43 25Z5	6.3V IDH 6.3V IDH 6.3V IDH 6.3V IDH 25V/0.3A IDH	SCO Tetrode Medium mu Triode RCO Pentode Power Pentode Rectifier Doubler	236 237 239 43 25Z5	UY-236 (Tos, Don) UY-237 (Tos, Don) - - -	UY-36 (elv) - UY-39(elv) UZ-43 (Tos, Don) KZ-25Z5 (Tos, Don, elv))
77, 78	6.3V IDH	SCO Pentode RCO Pentode	77 78	-	UZ-77 UZ-78 (Tos), (DON)
B1, B2, B3, B4, B5	IDH	Unknown	UY-36, UY-37, UY-38, UY-39, UZ-25Z5	-		UX-B1, UX-B2, UY-B3 (UY-35), UY-B4, UZ-B5 (Best)
C3, C4, C5	each 25V/ 0.3A IDH	Triode, Tetrode, Pentode		-		UY-25C3, UY-25C4, UY-25C5 (UZ-25A5), KX-25Z5 (HW)
3D, 3K 4R, 4D, 4K	3 tube Total 100V 4 tube Total 100V	Unknown Unknown	UY-36, UZ-43, UZ-25Z5 UY-36, UY-37, UZ-43, UZ-25Z5	-		TY-3D, TZ-3D, TZ-3K TY-4R, TY-4D, TZ-4D, TZ-4K (DON)