HRO Var. 2 (according to Moore)

• alternative name: National Toy Co.
• Brand: Thrillbox

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 sold later including long waves ( 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.

Knobs with metal skirts, push-pull type S-meter switch, pilot light left of selectivity switch, dark calibration charts with white lettering.

External power supply : PSU 697, 5897 or 5886 ("dog house" type).

Vous pourrez trouver sous ce lien 446 modèles d'appareils, 285 avec des images et 189 avec des schémas.
Tous les appareils de National Company; Cambridge & Malden (MA)