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USA: Radio Catalog for the radio manufacturer Electrical Research Laboratories Inc. (Erla); Chicago, Illinois

Choose the only.

Model	Year	Category	Tubes	Pictures			Forum	Coll.Pr.
21-P	1931/32	Radio	4 - 35
50-P	1931/32	Radio	5 - 47	11
61-P	1931/32	Radio	6 - 35
81 Ch= 245	1931/32	Radio	8 - 24A			1S
81-P Ch= 248	1931/32	Radio	7 - 35			1S
Sky Rover [4 Tube]	1932 ?	Radio	4 - 35	5		1S
SW-Converter 254	1932 ?	Converter	3 - 24	5		1S
Variable-Mu	1932 ?	Radio	4	1
62-P	1932 ?	Radio	5 - 35
67-P	1932 ?	Radio	7 - 32
82-P Ch= 248	1932 ?	Radio	7 - 35
90-P	1932 ?	Radio	7 - 32
264	1933 ?	Radio	6 - 58	7
603	1933 ?	Car Radio	6 - 78			2S
5700	1933 ?	Radio	5 - 2A7			2S
6100	1933 ?	Radio	6 - 78			2S
6300	1933 ?	Radio	6 - 2A7			3S
7700	1933 ?	Radio	6 - 1C6			3S
7741	1933 ?	Radio	6 - 1C6			3S
5721	1934	Radio	5 - 2A7			2S
6315	1934	Radio	6 - 2A7			3S
6317	1934	Radio	6 - 2A7			3S
6323	1934	Radio	6 - 2A7	4		3S
7732	1934	Radio	6 - 1C6			3S
6200	1934 ?	Radio	5 - 1A6			2S
6446	1934 ?	Radio	6 - 6D6	7		1S
9100	1935 ?	Radio	9 - 34			3S
Unknown	1935 ??	Radio	6 - 6A7	6
289	1936 ?	Radio	6	1
76-AC	1937	Radio	9	4
72-AC	1937 ?	Radio	11
54B	1938 ??	Radio	5	4
159AE	1939 ?	Radio	6 - 6A7	2
234 ET466	1941 ??	Radio	6 - 12K8	7

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