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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.
HRO-50TS	1949–52	Speaker-P
HRO-60	1952–64	Amateur-R	16 - 6BA6	9		3S
HRO-60-R	1952 ?	Amateur-R	16 - 6BA6
HRO-60RS	1952 ?	Speaker-P		1
HRO-60-SC2	1952 ?	Speaker-P		4
HRO-60-T	1952 ?	Amateur-R	16 - 6BA6
HRO-60TS	1952 ?	Speaker-P		3
HRO-500	1964–73	Amateur-R	37	11		4S		$
HRO-500P	1964–73	Amateur-R	37	1
HRO-500-TS	1964 ??	Speaker-P		1
HRO-600	1971–81	Amateur-R		1
HRO-B	1938–43 ??	Commercial Re	9 - 6D6	7
HRO-B-Junior HRO-B-JR	1938 ??	Amateur-R	9 - 6D6
HRO-C	1938 ??	Commercial Re	9 - 6D6	5
HRO Coils Consumer Models	1934–64	Radio part		8
HRO Junior HRO-JR	1936–43 ?	Amateur-R	9 - 58	9		1S
HRO-M	1944/45	Commercial Re	9 - 6D6	12		5S		$
HRO-M-RR	1944/45	Commercial Re	9 - 6D6			1S
HRO-M-TM	1944/45	Commercial Re	9 - 6D6			1S
HRO-MX	1944/45	Commercial Re	9 - 6D6	27		2S		$
HRO Receiver Tuning Mechanism Type PW	1935	Radio part		5
HRO-S [Prototype]	1934 ?	Commercial Re	10 - 58	4
HRO Senior HRO-SR	1936 ?	Commercial Re	9 - 6D6	15
HRO-W	1944/45 ?	Commercial Re	9 - 6K7
Keyer Oscillator Unit	1945/45	Amateur-D		2
Loudspeaker NC-44-TS	1939–41	Speaker-P
MB-29	1929	Radio	9 - 24	1		1S
MB-29A	1930–32	Radio	4 - 224	3
MB-30	1929 ?	Radio	5 - 24	1
MB32	1932 ?	Radio	5 - 35	1
MCR	1947–49	Speaker-P		2
Medium Voltage Supply NT 1200 PCW	1939–41	Power-S	2 - 866	3		2S
Modulator NSM	1938–41	Amateur-D	8 - 6C6	2		2S
Monitor Panel	1945/45	Misc		2
Monitor Speaker RFSH	1938–47 ?	Speaker-P
Multi-Channel Diversity Receiver NRCM	1945/45	Commercial Re		1
Narrow-band FM Adapter NFM-07	1948/49	Amateur-D	2 - 6H6	1
Narrow Band FM - Adaptor NFM-50	1950 ?	mod-past25	2 - 6SK7
Narrow Band FM Adaptor NFM-73	1947–51 ?	mod-past25
Narrow Band FM Adaptor NFM-83-50	1954–56 ??	mod-past25	2 - 6H6	1
NBS-1	1948	Commercial Re	16 - 6J5	4			1F
NBS-2	1950 ??	Commercial Re	17
NC-2-40	1943/44	Amateur-R	13 - 6SK7
NC-2-40C	1945/46	Amateur-R	12 - 6SK7	2		13S
NC-2-40CR	1945/46 ?	Amateur-R	12 - 6SK7
NC-2-40CS	1945/46	Amateur-R	12 - 6SK7	2		13S		$
NC-2-40CSR	1945/46 ?	Amateur-R	12 - 6SK7
NC-2-40D	1946–49	Amateur-R	12 - 6SK7	5		7S		$
NC-2-40DR	1946–49 ?	Amateur-R	12 - 6SK7	1		10S
NC-2-40DT	1946–49 ?	Amateur-R	12 - 6SK7			10S
NC-2-40S	1943/44 ?	Amateur-R	13 - 6SK7	1
NC-2RS	1940–42 ?	Speaker-P
NC-2TS	1940–44	Speaker-P		1
NC-5 (NC-5W, NC-5S)	1931/32	Converter	5 - 35	5		1S
NC-5M	1932 ?	Converter	5 - 35	1
NC-33	1948–50	Amateur-R	6 - 12SA7	22		9S
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
NC-45	1941–45	Commercial Re	8 - 6K8					$
NC-45A	1941–45	Amateur-R	8 - 6K8
NC-45B	1941–45	Commercial Re	7 - 6K8			1S
NC-46	1945–48	Commercial Re	10 - 6K8	7		15S
NC-46-TS	1945–47 ?	Speaker-P
NC-57	1947–51	Amateur-R	8 - 6SG7	15		28S
NC-57B	1951	Amateur-R	8 - 6SG7	12		17S
NC-57C	1951	Amateur-R	8 - 6SG7
NC-57M	1950/51 ?	Commercial Re	8 - 6SG7	1		15S
NC-66	1957–61	Amateur-R	5 - 1U4	11		12S
NC-77X	1963–67	Amateur-R	5 - 12BE6	6		1S
NC-77XW	1964–67	Amateur-R	5 - 12BE6	1
NC-80X	1937/38	Commercial Re	10 - 6L7	1		1S
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
NC-98	1954–56	Amateur-R	9 - 6BA6	14		10S	1F
NC-98SW	1954–56	Amateur-R	9 - 6BA6
NC-98TS	1954–56	Speaker-P
NC-100	1936–38 ?	Amateur-R	12 - 6K7	12		3S	1F
NC-100A	1938–45 ?	Amateur-R	11 - 6K7	1		3S
NC-100AB	1938–45 ?	Amateur-R	9 - 6K7			1S
NC-100ASD	1938–45 ??	Mil Re	10 - 6K7	3		15S
NC-100A Special	1938–45 ?	Amateur-R	11 - 6K7
NC-100 Battery model	1936–38 ?	Amateur-R	10 - 6K7
NC-100 F	1937 ?	Commercial Re	11 - 6K7
NC-100S	1936–38 ?	Amateur-R	12 - 6K7
NC-100SA	1938–45 ?	Amateur-R	11 - 6K7	1		1S
NC-100X	1936–38 ?	Amateur-R	12 - 6K7	4			1F
NC-100XA	1938–45 ?	Amateur-R	11 - 6K7	8		1S
NC-100XAB	1938–45 ??	Amateur-R	9 - 6K7
NC-100XS	1936–38 ?	Amateur-R	12 - 6K7
NC-100XSA	1938–45 ?	Amateur-R	11 - 6K7			1S
NC-101X	1936–39 ?	Amateur-R	12 - 6K7	1				$
NC-101XA	1939–41 ?	Amateur-R	11 - 6K7	6		1S
NC-101XAB	1939–41 ?	Amateur-R	9 - 6K7
NC-101XB	1936–39 ?	Amateur-R	10 - 6K7
NC-105	1962/63 ?	Amateur-R	6 - 6BE6	5		1S
NC-108	1948 ?	Radio	11 - 6BA6
NC-108-R	1948	Radio	10 - 6BA6			8S
NC-108-T	1948	Radio	11 - 6BA6	2		5S

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