Name: | National Radio Institute (NRI); Washington, DC (USA) |
Abbreviation: | nri |
Products: | Model types |
Summary: |
National Radio Institute (NRI) National Radio Institute (NRI) was a correspondence school that specialized in training for radio repair and operation. Conar Instruments was a division of National Radio Institute and supplied test equipment for NRI.
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Founded: | 1914 |
Closed: | 2002 |
History: |
From Wikipedia (2014): The National Radio Institute was founded by James E. Smith, a high school teacher, in Washington, D.C., in 1914. McGraw-Hill purchased NRI and the correspondence division of Capitol Radio Engineering Institute in 1968. The school was renamed NRI Schools, McGraw-Hill Continuing education center. James E. Smith remained as NRI chairman until his death in 1973. James' son, J Morrison Smith, succeeded as president, retiring in 1976. McGraw-Hill announced in 1999 that it would phase out NRI Schools, citing "changes in the marketplace". They ceased operation on March 31, 2002. |
This manufacturer was suggested by Wolfgang Scheida.
Country | Year | Name | 1st Tube | Notes |
---|---|---|---|---|
USA | 49 | Professional Tube Tester 70 | Eight valve holders, manual test voltage adjustment, neon lamp for short tests, one instru... | |
USA | 22 | Crystal Radio | 4,25" tapped coil with two times each four selectable positions, condenser tuning knob in ... | |
USA | 47 | Signal Generator 88 | 6BE6 | Provides 170 kHz to 60 MHz on fundamentals (120 MHz harmonics) in six ranges, attenuato... |
USA | 47 | Signal Tracer 33 | 6SK7 | Covers 170 kHz to 11,3 MHz in four ranges. Band A: 170 - 490 kHz Band B: 490 - 1470... |
USA | 47 | Professional Radio Tube Tester 68 | Advertised in National Radio News Vol 13 Oct-Nov 1948 No. 5 (Issued by NRI Training hea... | |
USA | 70 | Oscilloscope 2500 | ||
USA | 48 | Signal Tracer Professional 34 | 6BA6 | This signal tracer has a complete AM 4 band radio circuit incorporated. |
USA | 50 | Electronic Multitester | ||
USA | 48 | Professional Tube Tester 69 | ||
USA | 47 | Professional Resistor-Condensor Tester 112 | 6SL7 | Capacitance/Resistance & Leakage Tester. Six capacitor ranges: 100pF to 200... |
USA | 62 | Tube Tester 71 | NRI tube tester, 9 tube sockets. | |
USA | 50 | Professional Resistor-Capacitor Tester 311 | The RC-tester 311 is equipped with a magic eye as indicator for measurements. |
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