HRO-5A1

National Company; Cambridge & Malden (MA)

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  • Année
  • 1946/1947
  • Catégorie
  • Récepteur commercial (peut inclure bandes amateurs)
  • Radiomuseum.org ID
  • 49569
    • alternative name: National Toy Co.
    • Brand: Thrillbox

Cliquez sur la vignette du schéma pour le demander en tant que document gratuit.

 Spécifications techniques

  • No. de tubes
  • 11
  • Principe général
  • Super hétérodyne avec étage HF; FI/IF 456 kHz; 2 Etage(s) BF
  • Circuits accordés
  • 11 Circuits MA (AM)
  • Gammes d'ondes
  • PO, GO et plus que 2 x OC
  • Tension / type courant
  • Alimentation externe ou alimentation principale / AC 6.3 & DC 240 Volt
  • Haut-parleur
  • - Ce modèle nécessite des HP externes
  • Puissance de sortie
  • 1.5 W (qualité inconnue)
  • Matière
  • Boitier métallique
  • De Radiomuseum.org
  • Modèle: HRO-5A1 - National Company; Cambridge &
  • Forme
  • Gros appareil industriel ou militaire (> 20 kg)
  • Dimensions (LHP)
  • 440 x 220 x 300 mm / 17.3 x 8.7 x 11.8 inch
  • Remarques

  • 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.

  • Poids net
  • 14.5 kg / 31 lb 15 oz (31.938 lb)
  • Prix de mise sur le marché
  • 274.00 $
  • Source extérieure
  • Ernst Erb
  • Source du schéma
  • Rider's Perpetual, Volume 17 = 1948 and before

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