- Paese
- Olanda
- Produttore / Marca
- Airvoice Radio, N. V., Amsterdam
- Anno
- 1925
- Categoria
- Radio (o sintonizzatore del dopoguerra WW2)
- Radiomuseum.org ID
- 196093
Clicca sulla miniatura dello schema per richiederlo come documento gratuito.
- Numero di tubi
- 4
- Principio generale
- A circuiti accordati (TRF o amplif. diretta in generale)
- N. di circuiti accordati
- 2 Circuiti Mod. Amp. (AM)
- Gamme d'onda
- Onde medie (OM) e onde lunghe (OL).
- Tensioni di funzionamento
- Batterie (di accumulatori e/o a secco) / 4 & 45 & 90 Volt
- Altoparlante
- - Questo apparecchio richiede altoparlante/i esterno/i.
- Materiali
- Mobile in legno, valvole visibili.
- Radiomuseum.org
- Modello: Type 4 - Airvoice Radio, N. V.,
- Forma
- Soprammobile a leggio (pannello inclinato).
- Dimensioni (LxAxP)
- 340 x 325 x 315 mm / 13.4 x 12.8 x 12.4 inch
- Annotazioni
- Ebonite sloping control panel and oak cabinet. Classic lectern shaped model. The control panel was originally made of shining flamed black and brown ebonite. Exposure to sunlight gave the front plate an even brown colour. The highly symmetrical control panel is divided into four rows. In the first row, obscured by the four valves, binding posts for antenna and earth, situated on the upper left and right. In the second row we can see three coil holders. In the third row holds two rheostats. Left of the rheostats a switch that can be used to operate the radio on 3 or 4 valves; the on/off switch is situated on the right of the rheostats. The sockets on the left are for grid bias and filament voltage and the sockets on the left are for the plate voltages. Below the two switches, we see the knobs for primary and secondary tuning, the wave length switch and sockets for headphones and/or loudspeaker. It is a secondary receiver with inductive coupling. A remarkable detail in this circuit is the fact that reaction takes place over two stages, a custom dating back to the time of bright emitters. Because of that, the right coil behaves in a different way: because of the extra phase shift, the point of maximum reaction lays further away from the central coil. The original valve set is not known. Looking at the circuit, both LF tubes must have been the same. The Airvoice Type 7 resembles the Airvoice Type 4 receiver, but that radio has internal coils.
- Fonte dei dati
- - - Data from my own collection
- Autore
- Modello inviato da John Koster. Utilizzare "Proponi modifica" per inviare ulteriori dati.
- Altri modelli
-
In questo link sono elencati 4 modelli, di cui 4 con immagini e 1 con schemi.
Elenco delle radio e altri apparecchi della Airvoice Radio, N. V., Amsterdam