De Forest D-10, 1923


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Radio a reazione a 4 valvole con circuito reflex e rivelatore a cristallo. Antenna a quadro girevole innestabile a jack. Ricezione in onde medie da 500Khz a 1350Khz mediante bobine intercambiabili. Ottima sensibilità e selettività. La rivelazione si effettua tramite cristallo di galena: sistema un po’ laborioso ma efficiente.
Valvole DeForest DV5 originali con i loro contenitori in latta, tutte le 5 bobine d’accordo sono presenti, antenna originale, logo incluso, ma con nuovo filo litz.
Valvole: DeForest DV3 (basso consumo: 60mA) oppure DV5(alto consumo: 250mA).
Alimentazione: batteria filamenti da 4,5V (tubi DV3) oppure 6V (tubi DV5),  anodica 67,5V
Dimensioni: 320 x 230 x 350mm (1070mm con antenna)

Regenerative 4-tube radio with reflex circuit and crystal detector. Rotating loop antenna with plug-in jack. Medium waves from 500Khz to 1350Khz using interchangeable coils. Great sensibility and selectivity. Galena crystal detector: an awkward method but efficient.
DeForest Original Tubes (DV5) and tin cans, all 5 coils are included, original antenna with original logo but with new litz wire.
Tubes: DeForest DV3 (low power consumption: 60mA) or DV5 (high consumption: 250mA).
Power supply:  filament battery 4.5V (DV3 tubes)  or 6V (DV5 tubes), anodic 67.5V
Dimensions: 320 x 230 x 350mm (1070mm with antenna)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Ben visibile il cristallo di galena col suo filo in bronzo fosforoso. Una levetta esterna permette di posizionarlo per la migliore ricezione.
Well visible galena crystal with its phosphor bronze wire. An external lever allows you to position it for best reception.

 

 

 

 

 

 

 

 

 

 

 

 

 

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