Columbus 5A
Columbus (Brand); Radio Centre Ltd.; Wellington
- Land
- Neuseeland-Aotearoa
- Hersteller / Marke
- Columbus (Brand); Radio Centre Ltd.; Wellington
- Jahr
- 1951 ?
- Kategorie
- Rundfunkempfänger (Radio - oder Tuner nach WW2)
- Radiomuseum.org ID
- 304547
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- Anzahl Röhren
- 5
- Hauptprinzip
- Superhet allgemein; 2 NF-Stufe(n)
- Anzahl Kreise
- 6 Kreis(e) AM
- Wellenbereiche
- Mittelwelle, keine anderen.
- Betriebsart / Volt
- Wechselstromspeisung / 50Hz, 230 Volt
- Lautsprecher
- Dynamischer LS, mit Erregerspule (elektrodynamisch) / Ø 5 inch = 12.7 cm
- Material
- Gerät mit Holzgehäuse
- von Radiomuseum.org
- Modell: Columbus 5A - Columbus Brand; Radio Centre
- Form
- Tischgerät ohne Drucktasten, bis 35 cm Breite (Kleingerät, meist dekorativ. Nur für Netzbetrieb, doch Transportgriff möglich).
- Bemerkung
-
Columbus Model 5A
The model 5 series was in production for a few years and was released in four different variants with two valve lineups. The models were the 5, 5A, 5B and 5M.
The model 5 was originally specified to use an octal 6K6** output valve, although its likely that most have a 6V6. There is also a release note stating it would most likely change to be a 6AQ5 in time. It also showed an octal 6X5GT rectifier. All subsequent models have a full miniature valve lineup. The early schematic showing octal output and rectifier valves has no date or drawing number and may be a draft drawing, or an unofficial release to meet requests from service departments around the country. A subsequently released 'Model 5' drawing dated August 1951, almost a year after the release note, shows all miniature valves. Its unclear if RCNZ was referring to the original model 5 or all available variants at that time (although not all variants had the shown loop antenna).
The later versions also had a better spread of the frequency band as can be seen on the dial scales.
The model 5B has a wider dial, with a narrower speaker grill to compensate, and uses a standard aerial coil rather than the loop aerial the other models have.
- Literaturnachweis
- More Golden Age of Radio (Page 118 (Model 5B))
- Autor
- Modellseite von Stuart Irwin angelegt. Siehe bei "Änderungsvorschlag" für weitere Mitarbeit.
- Weitere Modelle
-
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Alle gelisteten Radios usw. von Columbus (Brand); Radio Centre Ltd.; Wellington