Model: NC-100 (NC100)
Antique radios, Old Time Radios
NC-100 (NC100)
Country:
United States of America (USA)
Manufacturer/Brand:
National Company, Inc.; Malden (MA)
Year: 1936 – 1938 ?
Type:
Amateur-Receiver
Mod.-ID = 49582
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Schematics etc.: 0 (for
members)
Principle
Superhet with RF-stage; IF-Freq. 456 kHzSuperhet with a preamplification stage.
Please use «To add informations to model» if you know more! Thanks.
Récepteur TSF superhétérodyne avec préamplification de HF.
Superhet mit HF-Vorstufe.
Wave bands
Broadcast plus more than 2 Short Wave bands.Bei der KW kann es sich um einen Gesamtbereich plus gespreizte Bänder oder um mehrere Bänder ohne Gesamtbereich handeln.
Power type and voltage
Alternating Current supply (AC) / 115 VoltAC set plus voltage range.
/ = 2 different voltages
- = voltage from-to
* = «Special»
Apparareil à courant alternatif. Tensions mentionnées.
/ = 2 Spannungswahlen
- = von-bis
* = Fabrikwahl/«Spezial»
Trafo ist nicht immer mit Primär- undSekundärwicklungen versehen. Dadurch kann das Chassis ein gefährlichesPotential führen.
Loudspeaker/pwr.out
Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil)Permanent magnet type moving coil speaker (principle by Rice-Kellog, without field excitation coil).
Haut-parleur avec système dynamique à aimant permanent (sans bobine d`excitation).
Permanentdynamischer Lautsprecher, also (modernes) Tauchspulenprinzip mit Selbsterregung bzw. Permanentmagnet statt Magnetspule. Siehe «Radios von gestern» Seiten 329ff.
/ 10 W
/ Ø 20.3 cm = 8 inch
www.radiomuseum.org
Model: NC-100 (NC100)
Material
Metal caseMetal case.
Caisse en métal.
Gerät, dessen Gehäuse aus Metall gefertigt ist. Es kann sich um verschiedenartige Metalle und Oberflächenbearbeitungen handeln. Ist es hingegen nur ein Chassis, so erhält das Gerät eine andere Bezeichnung.
Shape
Tablemodel, with any shape - general.
Valves / Tubes
12:
6K7
(more
for members)
Notes
coverage 540 kHz - 30 MHz, AM, CW (BFO);
micrometer dial, switchable coil sets, tuning eye;
comes with 8" speaker with chassis but no cabinet, optional RRA rack mounting brackets, optional DCS matching speaker cabinet.
Price in first year of sale
175
US$
External source of data
Ernst Erb
Source of data
Communication ReceiversCommunication Receivers, R. S. Moore.
Circuit diagram reference
Rider's Perpetual, Volume 8Ave, RD 2, Canandaigua, NY 14424-9564, USA.
For your information:
Other big collections of schematics for the USA are the books «Most-Often-Needed Radio Diagrams», compiled by M.N.BEITMAN (beginning: 1926-1938 = Vol. 1).
and folders from:
Howard W. Sams Company, 2647 Waterfront Parkway East Drive, Indianapolis, IN 46214-2041, Tel.: 1-800-GET-SAMS or 1-800-428-5331 or 7267.
Mentioned in
Shortwave Receivers-Past & pres.Shortwave Receivers - Past and Present; Fred Osterman, N8EKU.
NC100 Exterior
Inside the NC100. The interstage transformer at the rear is home-wound - not original. The original power supply capacitors have been replaced with modern ones.
ARRL-Handbook 1936
Further information on
NC-100 (NC100) (National Company, Inc.; Malden (MA))
Additional Notes for NC100 that may be of interest:
The model was available with an optional crystal filter. Bandswitching was performed using a moving "catacomb" containing the band coils. There was also an amateur-band only version of this receiver, the NC101X
