USA: Modelos del fabricante National Company; Cambridge & Malden (MA)
| Modelo | Año | Categoría | Válvulas | Fotos | Foro | Coll.Pr. | ||
|---|---|---|---|---|---|---|---|---|
| TV-1731 | 1951 ? | Televisión | 24 - 6AG5 | 16S | ||||
| TV-1732 | 1951 ? | Televisión | 24 - 6AG5 | 16S | ||||
| TV-2029 | 1951 ? | Televisión | 24 - 6AG5 | 16S | ||||
| TV-2030 | 1951 ? | Televisión | 24 - 6AG5 | 16S | ||||
| TVB-2 | 1950 ?? | Adaptor | 1 - 6AK5 | 2 |  |
$ | ||
| TVB-2B | 1951 ?? | Adaptor | 1 - 6AK5 | 3 | |
$ | ||
| Two Seventy "Cosmic Blue" NC-270 | 1960–64 | Amateur-R | 9 - 6BZ6 | 17 | |
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| Two Tube Tuner | 1928 ? | Radio | 2 | 1 | |
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| Ultra High Frequency Converter HFC | 1932–36 ? | Radio | 3 - 36 | 2 | |
1S | ||
| Ultra High Frequency Converter HFC(AC) | 1932–36 ? | Radio | 3 - 24 | 2 | |
1S | ||
| Universal 100KC Crystal Calibrator XCU-27 | 1956 ? | Amateur-D | 1 - 6AK6 | 4 | |
3S | ||
| Universal Model SW-3 Model III | 1940–45 ?? | Radio | 3 - 6J7 | 2 | |
1S | ||
| URR-36 | 1950 ?? | Commercial Re | 2 | |
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| URR-39 / R-651 | 1952 ?? | Commercial Re | 1 | |
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| Variable Condenser Equicycle | 1925 | Radio part | 1 | |
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| Velvet B 3580B | 1929–38 ? | Fuente-Al | 1 - 80 | 2 | |
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| Velvetone | 1929 ? | Ampl/Mixer | 4 - 227 | 2 | |
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| Velvet Vernier string drive tuning dial | 1925 ?? | Radio part | 5 | |
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| Velvet Vernier Dial A Dial | 1924–45 | Radio part | 5 | |
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| Velvet Vernier Dial B Dial | 1924–50 ? | Radio part | 6 | |
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| Videometer | 1950 | Equipment | 21 | 2 | |
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| VLF Preselector LF-10 | 1964 ?? | mod-past25 | 8 | 2 | |
2S | ||
| VX-501 | 1965 ? | Amateur-D | 3 | |
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| Wellesley Speaker System | 1956 | Altavoz-Au | 1 | |
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| World Master NC-88 | 1953–56 | Amateur-R | 9 - 6BA6 | 14 | |
1S | ||
| World Master NC-88SW | 1953–56 ? | Amateur-R | 9 - 6BA6 | |||||
| XCU-300 | 1955 ? | mod-past25 | 1 - 6AK6 | |||||
| XCU-303 | 1958 ? | mod-past25 | 2 - 12AT7 | 1S | ||||
| XCU-400 | 1959 ? | mod-past25 | 1 - 6AU6 | |||||
| 1-10A | 1938 ?? | Amateur-R | 4 - 954 | 11 | |
4S | ||
| 1-10 | 1938 ? | Commercial Re | 4 - 954 | 14 | |
2S | $ | |
| 3 tube Short Wave Kit | 1928 ? | Radio | 3 - 112A | 1 | |
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| 6A47WTC | 1950 ?? | Radio | 6 - 6SG7 | 8S | ||||
| 6A47WTR | 1950 ?? | Radio | 6 - 6SG7 | 8S | ||||
| 6AFMT | 1950 ?? | Radio | 6 - 6SG7 | 8S | ||||
| 6AMM | 1950 ?? | Radio | 6 - 6SG7 | 8S | ||||
| 8 tubes SH | 1932 | Kit | 8 - 36 | |||||
| 245 Push-pull Amplifier | 1930–32 | Ampl/Mixer | 1 | |
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| 650S | 1950–64 | Fuente-Al | ||||||
| 686 | 1939 | Fuente-Al | 1 - 6X5 | |||||
| 686S | 1939 | Fuente-Al | 1 - 6X5 | 3 | |
1S | ||
| 686SB | 1939 | Diversos | 1 - 6X5 | 1S | ||||
| 1286 | 1939 | Fuente-Al | 1 - 0Z4 | |||||
| 1286S | 1939 | Fuente-Al | 1 - 0Z4 | 1S | ||||
| 5856 | 1939 ? | Fuente-Al | 1 - 80 | |||||
| 37530 | 1946 ?? | Radio | ||||||
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[modelindex.cfm] 18 259
[modelindex.cfm] 18 259
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