HRO-5A1

National Company; Cambridge & Malden (MA)

Datos
Foro
Imágenes
Colecciones

  • Año
  • 1946/1947
  • Categoría
  • Receptor profesional (puede incluir bandas de aficionados)
  • Radiomuseum.org ID
  • 49569
    • alternative name: National Toy Co.
    • Brand: Thrillbox

Haga clic en la miniatura esquemática para solicitarlo como documento gratuito.

 Especificaciones técnicas

  • Numero de valvulas
  • 11
  • Principio principal
  • Superheterodino con paso previo de RF; ZF/IF 456 kHz; 2 Etapas de AF
  • Número de circuitos sintonía
  • 11 Circuíto(s) AM
  • Gama de ondas
  • OM, OL y más de dos OC
  • Tensión de funcionamiento
  • Alimentado desde otro equipo o aparato principal. / AC 6.3 & DC 240 Volt
  • Altavoz
  • - Este modelo usa altavoz exterior (1 o más).
  • Potencia de salida
  • 1.5 W (unknown quality)
  • Material
  • Metálico
  • de Radiomuseum.org
  • Modelo: HRO-5A1 - National Company; Cambridge &
  • Forma
  • Boatanchor (militar, profesional >20 kg).
  • Ancho, altura, profundidad
  • 440 x 220 x 300 mm / 17.3 x 8.7 x 11.8 inch
  • Anotaciones

  • Coverage : 1.7 – 30 MHz ( 4 standard ganged coil sets for 1.7 – 4, 3.5 – 7.3, 7 – 14.4, 14 – 30 MHz included, 2 coil sets for broadcast immediately available at extra cost, 7 more coil sets Additional coils (50-100, 100-200, 180-430, 480-960 and 900-2050 kHz) sold later including long waves and up to VHF ( total spectrum covered from 50 kHz to 54 MHz ).

    Modes AM / CW/SSB (BFO).

    The 0 – 500 epicyclic readout dial allows for continuous analog tuning while digitally indicating incremental progress over a range of ten full turns of the large tuning knob that tunes with velvet smoothness. Ten times the circumference of the dial is nearly 4 meters on a normal dial scale, which delivers great frequency resolution. The dial is not calibrated to directly indicate a frequency but a frequency calibration chart is necessary to determine the correct operation frequency.

    The latest HRO model (Var. 6) was sold as HRO-5A1, all knobs with metal skirts (selectivity control in right upper corner and new noise limiter control left of main dial both also with metal skirt), round metal labels around AVC and B+ switches, black micrometer dial and rectangular S-meter, S-meter toggle switch; printed metal calibration charts on coilsets. Rectangular IF filter shielding cans.

    External "dog house" type power supply : PSU 697 (filaments 6.3 V AC, B+ 240 V DC) used as standard.

  • Peso neto
  • 14.5 kg / 31 lb 15 oz (31.938 lb)
  • Precio durante el primer año
  • 274.00 $
  • Ext. procedencia de los datos
  • Ernst Erb
  • Referencia esquema
  • Rider's Perpetual, Volume 17 = 1948 and before

 Colecciones | Museos | Literatura

 Forum