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USA: Radio Catalog for the radio manufacturer National Company; Cambridge & Malden (MA)

Choose the only.

Model	Year	Category	Tubes	Pictures			Forum	Coll.Pr.
Power Unit 5897-AB	1935	Power-S	1 - 280	2
HRO Prototype [1.0 modified]	1935 ?	Commercial Re	9 - 58	10
HRO [Var. 2 (according to Moore)]	1935/36 ?	Commercial Re	9 - 6D6	9				$
Dial R	1935–46 ?	Radio part		2
DCS-8	1936 ?	Speaker-P
DCS-10	1936 ?	Speaker-P		4
HRO Senior HRO-SR	1936 ?	Commercial Re	9 - 6D6	15
HRO [Var. 3 (according to Moore)]	1936–38 ?	Commercial Re	9 - 6D6	13
NC-100	1936–38 ?	Amateur-R	12 - 6K7	12		3S	1F
NC-100 Battery model	1936–38 ?	Amateur-R	10 - 6K7
NC-100S	1936–38 ?	Amateur-R	12 - 6K7
NC-100X	1936–38 ?	Amateur-R	12 - 6K7	4			1F
NC-100XS	1936–38 ?	Amateur-R	12 - 6K7
NC-101X	1936–39 ?	Amateur-R	12 - 6K7	1				$
NC-101XB	1936–39 ?	Amateur-R	10 - 6K7
SW-3 Model II [var 1]	1936–40 ?	Radio	3 - 6D6	11		1S
SW-3 Model II (AC SW-3)	1936–40 ?	Radio	3 - 58	13		4S
Speaker Cabinet NDC-8	1936–41 ?	Cabinet		3
Speaker Cabinet NDC-10	1936–41 ?	Cabinet		1
HRO Junior HRO-JR	1936–43 ?	Amateur-R	9 - 58	9		1S
O Dial	1936–55 ??	Radio part		2
NC-100 F	1937 ?	Commercial Re	11 - 6K7
DCS-8G	1937/38	Speaker-P
NC-80X	1937/38	Commercial Re	10 - 6L7	1		1S
Signal Meter S-80	1937/38	Amateur-D		2
NC-80X-B	1937–39	Commercial Re	9 - 6L7
NC-81X	1937–39	Amateur-R	10 - 6L7			1S
NC-81X-B	1937–39	Amateur-R	9 - 6L7
High Fidelity TRF Unit	1937–39 ?	Radio		2
NC-510	1938 ?	Radio	3 - 956
RAO-1 CNA-46088	1938 ?	Mil Re
RAO CNA-46072 CG-46072	1938 ?	Mil Re		2
1-10	1938 ?	Commercial Re	4 - 954	14		2S		$
Coil Rack H-CRP	1938 ??	Misc
HRO-B-Junior HRO-B-JR	1938 ??	Amateur-R	9 - 6D6
HRO-C	1938 ??	Commercial Re	9 - 6D6	5
RAS-1	1938 ??	Mil Re	9 - 6D6
RAS-2 CNA-46080	1938 ??	Mil Re	9 - 6D6	3
RAW	1938 ??	Mil Re	9 - 6D6
Relay Rack HRO-SPC	1938 ??	Misc	1 - 80	4				$
1-10A	1938 ??	Amateur-R	4 - 954	11		4S
Exciter NTE-C	1938–41	Amateur-T		1
Exciter - Speech Amplifier NTE-A	1938–41	Amateur-T	10 - 6L6G	4		3S
Exciter - Speech Amplifier NTE-B	1938–41	Amateur-T	10 - 6L6G	4		1S
Modulator NSM	1938–41	Amateur-D	8 - 6C6	2		2S
Speech Amplifier NSA	1938–41	Ampl/Mixer		2
Transmitter NTX-30	1938–41	Amateur-T	8 - 6L6	2		2S
HRO [Var.4 (according to Moore)]	1938–43 ?	Commercial Re	9 - 6D6	19		2S
HRO-B	1938–43 ??	Commercial Re	9 - 6D6	7
NC-100A	1938–45 ?	Amateur-R	11 - 6K7	1		3S
NC-100AB	1938–45 ?	Amateur-R	9 - 6K7			1S
NC-100A Special	1938–45 ?	Amateur-R	11 - 6K7
NC-100SA	1938–45 ?	Amateur-R	11 - 6K7	1		1S
NC-100XA	1938–45 ?	Amateur-R	11 - 6K7	8		1S
NC-100XSA	1938–45 ?	Amateur-R	11 - 6K7			1S
BC-903-A	1938–45 ??	Mil Re
NC-100ASD	1938–45 ??	Mil Re	10 - 6K7	3		15S
NC-100XAB	1938–45 ??	Amateur-R	9 - 6K7
Speaker MCS	1938–46 ??	Speaker-P		3
Monitor Speaker RFSH	1938–47 ?	Speaker-P
Power Supply 697	1939	Power-S	1 - 80	10		1S		$
SPU686S	1939	Power-S	1 - 6X5			1S
686	1939	Power-S	1 - 6X5
686S	1939	Power-S	1 - 6X5	3		1S
686SB	1939	Misc	1 - 6X5			1S
1286	1939	Power-S	1 - 0Z4
1286S	1939	Power-S	1 - 0Z4			1S
SPU-697	1939 ?	Power-S	1 - 80
5856	1939 ?	Power-S	1 - 80
RBT	1939 ??	Commercial Re	4 - 954
Class B Modulator NT 300 PCW	1939–41	Amateur-D	2 - 203Z	3		2S
Final Amplifier NT 100 PCW	1939–41	Amateur-D	3 - 35T	1		2S
High Voltage Supply NT 2000 PCW	1939–41	Power-S	2 - 866	3		2S
Loudspeaker NC-44-TS	1939–41	Speaker-P
Medium Voltage Supply NT 1200 PCW	1939–41	Power-S	2 - 866	3		2S
NC-44	1939–41	Amateur-R	7 - 6K8	3		1S
NC-44A	1939–41	Amateur-R	7 - 6K8
NC-44B	1939–41	Amateur-R	6 - 6K8			1S
NHU	1939–41	Radio	12 - 956	2
NHU20	1939–41	Radio	12 - 956
NHU-20B	1939–41	Radio	12 - 956
NHUB	1939–41	Radio	12 - 956
Pi Network Coupler NT-APW	1939–41	Amateur-D		1
Power Supply SPU-56	1939–41	Power-S	1 - 80
Relay Control Panel NT-RPW	1939–41	Amateur-D		1
The National 600 Watt Transmitter NC-600	1939–41	Amateur-T	19 - 6L6	3		2S
NC-101XA	1939–41 ?	Amateur-R	11 - 6K7	6		1S
NC-101XAB	1939–41 ?	Amateur-R	9 - 6K7
Oscilloscope CRR	1939–41 ?	Equipment	2 - 902	2
CRM	1939–46	Equipment	2 - 913	13		2S		$
NC-120 RAO-2	1940 ??	Mil Re	11 - 6K7	2		8S
NC-127	1940 ??	Mil Re		4
NC-156	1940 ??	Commercial Re	12 - 6K7	6
RAO-2	1940 ??	Mil Re	11 - 6K7
RAS-3	1940 ??	Mil Re
RAS-4	1940 ??	Mil Re
NC-200RG	1940–42	Amateur-R	12 - 6SK7			8S
NY Dial	1940–42	Radio part		2
NC-2RS	1940–42 ?	Speaker-P
NC-200 TG	1940–43	Commercial Re	12 - 6SK7	8		4S

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