- Produttore / Marca
- National Company; Cambridge & Malden (MA)
- Anno
- 1951–1958
- Categoria
- Ricevitore amatoriale (può includere bande broadcast)
- Radiomuseum.org ID
- 49625
-
- alternative name: National Toy Co.
- Brand: Thrillbox
National SW-54
National SW 54
National SW 54 vista interno
National SW 54
By courtesy of William Kendrick, USA
National SW 54 Vista telaio
Sams Photofact Folders reference picture.
1952 National advertising in Brazil
Clicca sulla miniatura dello schema per richiederlo come documento gratuito.
- Numero di tubi
- 5
- Principio generale
- Supereterodina (in generale); ZF/IF 455 kHz; 2 Stadi BF
- N. di circuiti accordati
- 6 Circuiti Mod. Amp. (AM)
- Gamme d'onda
- Onde medie (OM) e più di 2 gamme di onde corte (> 2 x OC).
- Tensioni di funzionamento
- Alimentazione universale (doppia: CC/CA) / 117V = 105 -130 Volt
- Altoparlante
- AP magnetodinamico (magnete permanente e bobina mobile) / Ø 5 inch = 12.7 cm
- Potenza d'uscita
- 1.8 W (qualità ignota)
- Materiali
- Mobile di metallo
- Radiomuseum.org
- Modello: SW-54 - National Company; Cambridge &
- Forma
- Soprammobile con qualsiasi forma (non saputo).
- Dimensioni (LxAxP)
- 279 x 178 x 178 mm / 11 x 7 x 7 inch
- Annotazioni
-
National model SW-54 is an AC-DC operated multi-band superheterodyne receiver.
coverage 540 kHz - 30 MHz, AM, CW (BFO).National introduced the SW-54 in late 1950 as a 1951 model. It was advertised as "The Mighty Midget", covering broadcast and three shortwave bands. National's target was the low-end market, aimed at the shortwave listener and beginning ham radio operator for whom the 50 dollar price point was important. It did not have a real BFO stage but used regenerative IF as a substitute.
The set used mechanical "bandspread" with a 4 1/2 inch wide clear-plastic second knob with logging scale which was accessible on the right side of the cabinet. That larger knob was directly concentric with the tuning knob.
The SW-54 carried a warning label that the chassis was directly connected to one side of the power line. It was UL approved since the hot chassis was separated from the cabinet by insulators. The control shafts for the bandswitch and volume control were separately mounted on an insulator which protected the user in case a knob came off. The set also used an interlock connector that cut off the power if the back was removed to replace the tubes.
- Peso netto
- 5.8 kg / 12 lb 12.4 oz (12.775 lb)
- Prezzo nel primo anno
- 50.00 $
- Fonte esterna dei dati
- Ernst Erb
- Fonte dei dati
- Communications Receivers
- Riferimenti schemi
- Rider's Perpetual, Volume 22, covering 1951
- Bibliografia
- Shortwave Receivers - Past & Present (3rd ed.)
- Letteratura / Schemi (1)
- Photofact Folder, Howard W. SAMS (Date 8-51, Set 141, Folder 9)
- Letteratura / Schemi (2)
- Montgomery Ward Catalogs (Wards, Airline) (Fall/Winter 1951/52, page 702. Spring/Summer 1952, page 604. Fall/Winter 1954/55, page 665.)
- Letteratura / Schemi (3)
- National’s Entry-Level Shortwave Radio;The ‘Mighty Midget’ SW-54,The Spectrum Monitor, 3-2025,
- Altri modelli
-
In questo link sono elencati 446 modelli, di cui 285 con immagini e 189 con schemi.
Elenco delle radio e altri apparecchi della National Company; Cambridge & Malden (MA)
Collezioni
Il modello fa parte delle collezioni dei seguenti membri.