BTS Short Wave Unit

BTS (B.T.S.) British Television Supplies; London

Datos
Foro
Imágenes
Colecciones

  • Año
  • 1935 ?
  • Categoría
  • Conversor o Adaptador de frecuencia
  • Radiomuseum.org ID
  • 361753

 Especificaciones técnicas

  • Numero de valvulas
  • 1
  • Principio principal
  • Convertidor de RF
  • Gama de ondas
  • Onda Corta solamente
  • Tensión de funcionamiento
  • Alimentado desde otro equipo o aparato principal.
  • Altavoz
  • - - No hay salida de sonido.
  • Material
  • Metálico
  • de Radiomuseum.org
  • Modelo: BTS Short Wave Unit - BTS B.T.S. British Television
  • Forma
  • Sobremesa de tamaño mediano sin botonera <= 35 cm. (Incluso portables pero sólo con alimantación por red).
  • Anotaciones

  • The BTS Short Wave Unit was a versatile shortwave converter designed to expand the reception capabilities of standard broadcast receivers. It enables listeners to tune into both amateur phone transmissions and commercial shortwave broadcasts, greatly increasing the range of stations accessible on a conventional radio set.

    Frequency Coverage

    • Standard Coils: The unit covers wavelengths from 13 to 52 metres, corresponding to the following shortwave bands: 13 m, 16 m, 19 m, 20 m, 25 m, 31 m, 40 m, and 50 m.
    • Optional Coils: Two additional coils are available to extend coverage from 50 to 260 metres, allowing reception of lower-frequency bands.

    Flexibility & Compatibility

    • Adapter Function: The unit can be plugged directly into the detector stage of straight (non-superheterodyne) receivers, effectively converting them for shortwave reception.
    • Superhet Function: It can also serve as a superheterodyne (superhet) converter, positioned ahead of receivers equipped with one or more high-frequency (RF) stages.
    • Triple Detection: When used in conjunction with a superheterodyne receiver, the system achieves triple detection, resulting in exceptionally high efficiency and selectivity.

    Valve Requirements

    • Battery Sets: Requires a PM2DX valve (tube).
    • Mains Receivers: Requires an AC/HL valve.

    Tuning Mechanism

    • Main Tuning: Utilises a single air-dielectric tuning condenser with a very low loss value of 0.00016 uF.
    • Dial Mechanism: Tuning is accomplished via a slow-motion dial with a 180:1 gear ratio, allowing for extremely precise frequency adjustment.
    • Reaction Control: Features a slow-motion reaction condenser for fine-tuning and optimising sensitivity.

    Construction & Usability

    • Screening: The unit is fully screened to minimize the effects of hand capacity (unwanted detuning caused by the proximity of the operator’s hand).
    • Ease of Use: Designed to be as straightforward to operate as a standard broadcast set.
  • Precio durante el primer año
  • 2.65 GB £
  • Mencionado en
  • -- Original prospect or advert (Wireless Magazine Jan 1935, Page 571.)
  • Documentación / Esquemas (1)
  • -- Original prospect or advert (Television & Shortwave World Apr 1936, Page 236)
  • Autor
  • Modelo creado por Gary Cowans. Ver en "Modificar Ficha" los participantes posteriores.

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