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Next time you look for a tube using your favorite search engine, enter the type, space and the word pax. (example: 6BA6 pax). That will bring us up as one of the 1st pages.

Regulator tubes beginning with 0 are properly listed. 0 means zero filament voltage. Some sellers (most notably Richardson) erroneously list them with a capital o as in O. Although this is incorrect, I have listed them both ways for those who search by the wrong character.

EVERYDAY LOW PRICES
The dealer net info comes from catalogs like Newark, Allied, Richardson, MCM , CEI etc.

TUBE TYPE	BRAND	Mfg/ EIA Code	STAT.	WRIT. CONDIT.	COLOR OF WRITE	COUNTRY OF ORIG.	DATE CODE	BOX STYLE	BOX CONDITION # = record# * = remarked	QY	Our PRICE (each)	Info: typical dealer net
0A2 / 150C4 or OA2	GE	188-5	New	excell.	white	France	SW	GE2	# v.good	1	$3.85	$7.30@ Rich $18.53 @Newk
			New	excell.	white	Italy	SM	GE2	# v.good	1	$3.85
	Penta	THO	New	excell.	yellow	USA	8932	Penta white	good	2	$3.85
	RCA	T	New	excell.	red	W.Ger.	017	RCA6	# v.good	1	$3.85
		-	New	v.good	red	USA	70222	RCA6	excell.	1	$3.85
	Sylvania	ACH	New	excell.	yellow	USA	AH	SYL5	excell.	1	$3.85
0A2u	CBS	?	used	poor	orange	USA	?	box supplied		1	$1.65
	RCA	SOLD	used	good	red	USA	72-39	box supplied		0	$1.65
0A3 u	RCA	-	used	excell.	white	USA	4-39	box supplied		1	$2.50	$12.80
0B2 or OB2	GE	188-5	New	excell.	white	Gt. Britain	IN	GE2	# very good	1	$4.80	$13.85
0B2WA	Sylvania	?	New	smear	green	USA	?	pl.white	excell	1
0C3 or OC3	RCA SOLD	- OUT	New	excell.	red	USA	7148	RCA5	good	0	$-	$13.90
0D3	SOLD OUT
0Y4/G	try 0Z4
0Z4 or OZ4	CBS	--	New	excell.	orange	USA	DC	CBS2	v.good	1	$2.80	$4.90
	RCA	-	New	excell.	white	USA	LQ	pl.white	excell.	1	$2.60
	Sylvania SOLD	YVB OUT	New	excell.	yellow	USA	bb	SYL4	# fair	0	$2.80
0Z4G	Philco	-	New	excell.	yellow	USA	5104	PHIL3	good	1	$3.85	$10.45
1A4E/P	use 34
1A5GT	Philco	M-R	New	sealed		USA	-	PHILa	v.good	1	$2.00	$7.80
1A7GT	Sylvania	M-R	New	sealed		USA	-	SYLb	good	1	$2.80	$7.85
		E5	New	v.good	black	USA	I9	pl white	excell	1	$2.60
1AD2A	GE	188-5	New	v.good	white	USA	JZ	GE2	good	1	$1.00	$6.75
1AD2u	GE	188-5	Used	v.good	white	USA	64-07	box supplied		1	$0.55
use also 1BY2A
1AG5	use 1AK5 parallel fil only
1AJ5	use 1AK5 parallel fil only
1AK5	Raytheon	-	New	excell.	orange	USA	439	RAY2	# good	1	$3.85	$12.90
1AY2A	GE	188-5	New	excell.	white	USA	EF	GE2	# good	1	$1.00	$11.40
		188-5	New	excell.	white	USA	LH	GE2	excell.	1	$1.00
1B3GT	Sylvania	JAN	New	good	green	USA	6751	pl white	excell.	1	$1.00	$9.80
1B3GT / 1G3GT	GE	188-5	New	good	white	USA	KZ	GE2	#*v.good	1	$1.00
	Sylvania	EOT	New	good	yellow	USA	fg	SYL5	#*v.good	1	$1.00
	Sylvania	?	New	smear	yellow	USA	?	SYL5	#*v.good	1	$1.00
	use also 1G3GT/1B3GT or 1G3GTA/1B3GT
1B4/G/P/T	use 34
1B24A	Bomac	355	New	excell.	black	USA	6621	VAR1	#v.good	1	$13.00	$110.00 @Rich
	JRC	-	New	v.good	blue	-	A5562	pl box	excell	1	$13.00
1B60	try 1B24A (size)
1BC2	Admiral	188-20	used	excell.	red	USA	66-26	QB1	excell	1	$1.00	$8.20
	Philco	1063	New	excell	orange	USA	1/13	Phil1	*v.good	1	$1.00
	Zenith	NA	New	fair	orange	Japan	276-25	QB1	excell	1	$1.00
1BC2A	Admiral	188-5	New	good	red	USA	70-38	ADM1	*v.good	1	$1.00
	Sylvania	EAG	New	excell	orange	USA	hd	SYL5	# v.good	1	$1.00
1BQ2	use 1S2A or B
1BX2	use 1X2C
1BY2A	Sylvania	AAA	New	excell.	yellow	USA	DF	SYL5	#v.good	1	$1.00	$6.75
		ECA	New	excell	yellow	USA	NR	SYL5	good	1	$1.00
1BY2A/ 1AD2A	Amperex	111	New	faded	orange	USA	74-09	AMP3	#v.good	1	$1.00
	GE	188-5	New	v.good	white	USA	RH	GE2	good	1	$1.00
1BY2Au	Sylvania	?	New	poor	yellow	USA	?	box supplied		1	$0.55
1C1	use 1R5		This is Pentigrid Converter, not the Ballast Tube
1C7G	National Union	-	New	excell.	lt.blue	USA	JC	NU3	good	1	$2.95	$7.90
1DN5	Sylvania	EAC	New	excell.	yellow	USA	W	SYL3	# fair	1	$1.00	$7.85
1F3	use 1T4
1G3GT / 1B3GT	GE	188-5	New	v.good	white	USA	RW	GE2	excell.	1	$1.00	$9.80
		188-5	New	excell.	white	USA	63-22	GE2	excell.	2	$1.00
	RCA	IKJ	New	v.good	red	USA	63-17	RCA3	excell.	1	$1.00
	use also 1B3GT/1G3GT
1G3GTA / 1B3GT	RCA	-	New	excell.	red	USA	?	RCA6	excell.	1	$1.00
		D34SGA	New	good	red	USA	72-52	RCA5	excell.	1	$1.00
		D14YGA	New	faded	red	USA	?	PAX1	excell.	1	$1.00
	use also 1B3GT/1G3GTA
1G5G	RCA	T1	BN	good	red	USA	*	McMur1	# * fair	1	$3.40	$7.80
1G45P	use 6130/3C45
1G50	use 2050A
1H2/1S2u	Motorola	188-5	used	good	yellow	USA	59-22	box supplied		1	$0.95	$7.80
	use also 1S2
1H4G	Tung-Sol	322	New	excell.	silver	USA	639	TSa	good	1	$5.75	$7.70
1H5GT	Raytheon	SOLD OUT	New	sealed		USA	-	RAY pl.white	v.good	0	$-	$7.80
1H33	use 1R5 parallel fil only
1J3	Zenith	188-5	New	excell.	red	USA	59-43	ZEN1	fair scrunched	1	$1.00	$7.50
	use also 1K3/1J3 or 1K3A/1J3
1J5G	use 1G5G
1K3 / 1J3	GE	188-5	New	good	white	-	58-43 58-52	GE2	good	1 1	$1.00	$7.50
	Inter- national	922	New	v.good	white	-	26	INT5	# good	1	$1.00
	RCA	-	New	excell	red	USA	CV	RCA4	excell	1	$1.00
	Truetone	p/n 3D7121	New	v.good	blue	-	-	True1	v.good	1	$1.00
1K3A / 1J3	Sylvania	?	New	poor	yellow	USA	?	SYL5	excell.	1	$1.00
1K4	use 34 parallel fil only
1K24	use 3B24W
1LA6	Sylvania	-	New	good	green	USA	336	SYL1	good	1	$4.85	$12.80
1LH4	Philco	SOLD OUT	New	excell.	yellow	USA	3P	PHILa	good	0	$-	$12.80
1LN5	RCA	-	New	excell.	white	USA	322	RCA3	good	1	$3.95	$12.80
1N2 or 1N2A		try 1B3GT family
1N5GT	Tung-Sol	-	New	good	black	USA	L-16	TSa	good	1	$3.85	$9.60
1P5GT	use 1N5GT
1P10	use 3S4
1R4	Sylvania	-	New	good	yellow	USA	-	SYL2	v.good	2	$1.00	$3.60
1R5	Arcturus	-	New	fair	white	USA	1064	ARC1	# good	1	$4.75	$8.50
	Emerson	322	New	excell.	white	USA	926	STAN4	excell.	1	$4.75
	Raytheon	-	New	excell.	yellow	USA	H24	RAY5	# excell.	1	$4.95
		Uniline	New	smear	?	USA	?	STAN4	excell.	1	$4.75
	RCA	-	New	good	red	USA	LP	RCA3	good	1	$4.95
		-	New	good	white	USA	62-?77	STAN4	scrunch	1	$4.75
	Sylvania	-	New	good	yellow	USA	CK	pl red	good	1	$4.75
		BCA	New	excellent	yellow	USA	jm	STAN6	v.good	1	$4.75
	Zenith	312	New	excell.	yellow	USA	226	STAN4	excell.	1	$4.75
1S2A	GE	188-5	New	excell.	red	USA	60-13	GE2	good	1	$1.00	$7.80
	Raytheon Uniline	-	New	excell.	yellow	USA	104	Ray3	v.good	1	$1.00
1S2B / DY87	GE	188-5	New	excell.	white	G.Brit	FL	GE2	excell	2	$1.00
1S5	RCA	-	New	good	white	USA	KH	RCA3	excell	1	$2.90	$9.00
1T4	Arcturus	-	New	excell.	white	-	164	ARC1	# v.good	1	$2.50	$9.80
	GE	188-5	New	excell.	white	USA	IV	GE2	# fair	1	$2.60
	Sylvania	-	New	good	yellow	USA	CJ	SYL3	v.good	1	$2.60
	Use also W17
1T4u	Sylvania	?	used	smear	?	USA	?	box supplied		1	$1.45
1U4	RCA	-	New	fair	white	USA	?	RCA4	#*v.good	1	$4.45	$6.20
		-	New	goof	red	USA	L?	<RCA3	v.good	1	$4.45
1U5	CBS	-	New	excell.	orange	USA	CF	CBS2	v.good	1	$5.80	$7.50
	RCA	-	New	excell.	red	USA	DE	RCA4	# good	3	$5.80
	Sylvania	-	New	fair	green	USA	4-26	SYL1	good	1	$5.80
		ELR	New	v.good	yellow	USA	FB	SYL4	# good	1	$5.80
1V2	GE	188-5	New	excell.	white	USA	JM	GE2	excell	1	$1.00	$5.10
	Inter- national	922	New	excell.	white	Korea	126	INT4	v.good	1	$1.00
	Raytheon	280	New	excell.	yellow	USA	113	RAY2	v.good	1	$1.00
		-	New	excell.	yellow	Japan	H-06	RAY5	# v.good	1	$1.00
		850	New	excell.	yellow	Japan	P02	RAY5	excell	1	$1.00
	Tung-Sol	?	New	smear	white	?	?	TS1	good	1	$1.00
	Zenith	343	New	excell.	orange	USA	909	ZEN2	# excell.	2	$1.00
1X2A	RCA	-	New	fair	white	USA	504	RCA3	fair	1	$1.00	$6.00
	Sentinel	210	New	excell	white	USA	50-52	pl. red	good	5	$0.85
1X2A/ 1X2B	GE	188-5	New	excell.	white	USA	JZ	GE2	v.good	1	$1.00
		188-5	New	excell	white	USA	61-43	GE2	excell	1	$1.00
	Hitachi	-	New	excell.	white	Japan	06	pl.white	excell.	1	$0.85
	Westing- house	337	New	excell.	yellow	USA	-	WEST4	# very good	1	$1.00
1X2B	Sylvania	-	New	excell.	yellow	USA	CH	SYL2	good	2	$1.00
		EYR	New	excell	yellow	USA	dm	SYL5	v.good	1	$1.00
	Tung-Sol	322	New	v.good	white	USA	PT3	TS1	excell	1	$1.00
	Westing- house	SOLD OUT	New	excell.	yellow	USA	7R13	WEST1	very good	0	$1.00
1X2Bu	Admiral	210	used	fair	white	USA	5443	box supplied		1	$0.50
1X2C/ 1BX2	Sylvania SOLD	EAY OUT	New	very good	yellow	USA	lh	SYL5	# very good	0	$-	$7.90
2AF4A	RCA	SOLD	New	good	white	USA	NU	RCA3	v.good	0	$-	$5.10
2AF4B	RCA	-	New	good	red	USA	?	RCA4	fair	1	$1.00
2AH2	see 2AS2A
2AS2A/ 2AH2/ 2BU2	Inter- national	922	New	excell.	white	USA	47	INT5	good	1	$1.00	$7.50
	Raytheon	-	New	poor	yellow	USA	J02	RAY5	good	1	$1.00
	RCA	-	New	v.good	red	USA	CY	RCA5	v.good	1	$1.00
	Westing- house	337	New	v.good	yellow	USA	83-06	WEST4	# very good	1	$1.00
2AS15A	Kalotron	-	new	excell.	green	USA	48	plain white		1	$13.75	$152.00 @Rich
2AV2	GE	188-5	New	excell.	white	USA	KG	GE2	excell.	2	$1.00	$5.70
	RCA	AHE (Syl)	New	good	red	USA	JJ	PAX1	excell.	1	$1.00
	Realistic	-	New	good	yellow	Korea	?	Real.	v.good	1	$0.90
2B46	use 6146B
2B94	use 5894
2B/250	use 807
2BA2	see 2AV2
2BN4A	GE	188-5	New	excell.	white	USA	LU	GE2	v.good	1	$1.00	$3.60
	RCA	-	New	v.good	red	USA	LV	RCA3	v.good	1	$1.00
2BU2	use 2AS2A/2AH2
2C22	use 7193
2C48	use 7C5
2C51W	use 5670
2C52	see 12SL7GT parallel fil only
2CN3B	Sylvania	EAC	New	v.good	yellow	USA	NR	SYL5	good	2	$1.00	$3.50
		EAD	New	excell.	yellow	USA	NR	SYL5	v.good	1	$1.00
2CW4	Amperex	111	New	v.good	orange	-	74-35	AMP3	# v.good	1	$3.95	$14.90
2CW4/ 2DS4	Inter- national	922	New	excell.	black	-	85	INT6	# very good	1	$3.85
2CY5	GE	188-5	New	good	white	USA	LW	GE2	v.good	1	$1.00	$3.30
	RCA	-	New	excell.	red	USA	BY	RCA4	# v.good	1	$1.00
		-	New	good	red	USA	?	PAX1	excell.	1	$0.90
	Tung-Sol	322	New	excell.	white	USA	N73	TS1	excell	1	$1.00
2D21	GE	SOLD	New	excell.	white	USA	IL	pl white	excell.	0	$2.10	$9.20
2D21W	use 5727
2DS4	use 2CW4
2DZ4	Motorola	188-5	New	excell	green	USA	64-35	QB	*excell	1	$0.90	$5.10
		188-5	New	excell	green	USA	65-43	MOT3	# v.good	2	$1.00
2E26	GE	188-5	BN	excell.	white	USA	60-35	GE2	#*v.good	1	$4.55	$28.20
	GE	188-5	New	excell.	white	USA	KI	GE2	# good	1	$4.85
2E41	try 1AK5 parallel fil only
2E42	try 1AK5 parallel fil only
2EG4	GE	188-5	New	excell.	black	-	HR	GE2	# excell.	1	$3.80	$13.60
2EN5	GE	?	New	fair	white	?	HR	GE2	v.good	1	$1.00	$6.50
	Sylvania	AAF	New	good	yellow	USA	W	SYL4	# v.good	1	$1.00
		AD?	New	good	yellow	USA	NR	SYL4	v.good	1	$1.00
2ER5	Sylvania	BAN	New	good	yellow	USA	-	SYL4	# good	1	$1.00	$2.90
2FH5	GE	188-5	New	good	white	USA	63-38	GE2	excell.	1	$1.00	$2.50
		188-5	New	v.good	white	USA	EV	GE2	# v.good	1	$1.00
2FQ5, 2FQ5A, 2FQ5/2GK5 or 2FQ5A/2GK5					use 2GK5 family
2FS5	IEC Mullard	-	New	excell.	white	USA	249	INT4	good	1	$1.00	$6.00
2FY5	GE	188-5	New	v.good	orange	Holland	61-43	GE2	good	1	$1.00	$6.50
2GK5/ 2FQ5	Olympic	?	New	smear	orange	USA	?	pl.white	v.good	1	$0.85	$7.20
	Sylvania	AAT	New	good	yellow	USA	hf	SYL5	v.good	1	$1.00
	Westing- house	337	New	excell.	yellow	USA	85-01	WEST4	# excell.	1	$1.00
2GW5	Dumont	158	New	v.good	red	USA	27-62	STAN4	# good	1	$4.70	$6.50
	Sylvania	?	New	fair	yellow	USA	?	SYL4	@v.good	1	$4.90
2HA5 / 2HM5 / XC900	Amperex	-	New	v.good	orange	Holland	-	AMP2	# excell.	1	$1.00	$6.90
	GE	188-5	New	excell.	white	Gt. Britain	KJ	GE2	excell.	1	$1.00
2HK5	use 2HQ5
2HQ5	Westing- house	337	New	excell.	yellow	Japan	-	WEST4	# excell.	1	$1.00	$5.80
2J42	SOLD OUT
2K25	Amperex (black)	-	New	excell.	orange	USA	-	AMP3	v.good	1	$42.00	$130.00 @IEC $304.00 @Rich $90.00 @AES
	Eng. Elect (black)	1307	New	excell.	white	England	6815	EEV1	good	1	$42.00
	Raytheon (light blue)	RK	New	excell.	dark blue	USA	6812	AMP3	# * v.good	1	$42.00
2W3GT	Lafayette	-	New	good	red	USA	17	pl.white	excell.	1	$13.75	$15.00
2X2A	RCA	JAN	New	excell.	white	USA	939	mil box	v.good	1	$1.00	$18.80
	Tung-Sol	322	New	excell.	white	USA	939	TSa	v.good	1	$1.00
2Y2	use 2X2A

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