Short Wave Receiver and Detector TRD-1

Telephone Maintenance Co.; Chicago, Illinois (Telmaco)

  • Año
  • 1921
perfect model
  • Categoría
  • Radio - o Sintonizador pasado WW2
  • Radiomuseum.org ID
  • 63181
    • Brand: Telmaco

 Especificaciones técnicas

  • Numero de valvulas
  • 1
  • Principio principal
  • RFS (Radio Frecuencia Sintonizada) en general
  • Gama de ondas
  • OM (onda media) solamente
  • Tensión de funcionamiento
  • Baterías recargables o pilas
  • Altavoz
  • - Este modelo usa amplificador externo de B.F.
  • Material
  • Madera
  • de Radiomuseum.org
  • Modelo: Short Wave Receiver and Detector TRD-1 - Telephone Maintenance Co.;
  • Forma
  • Sobremesa, caja, normalmente con tapa (panel no inclinado).
  • Anotaciones
  • (Telmaco) Telmaco TRD-1 is the TR-1 Short Wave Receiver and a Detector combined into one quarter sawed oak cabinet. This kit was completely assembled but sold unwired.

    The well known book "1921-1932 Radio Collector's Guide" by Morgan E. McMahon lists on page 171 for Telephone Maintenance Co. (Telmaco) the following models: 1921: TRD-1 (no price); 1923: Telmaco (Reg. for $ 25 and we assume model B-R), followed by 6 models P-1:
    1924: Telmaco Acme P-1 (we call it "old" for distinction to the "new" Acme portable);
    1925: Acme P-1 ("new" Portable) for $ 125, P-1 ("old" Portable) for $ 147, P-1 (Kit "old") for $ 85;
    1926: P-1 ("new" Portable) for $ 125 and P-1 (Kit, "new") for $ 80.
    All these models with P-1 are shown as Reflex with 3-3 stages and one "Big tuning dial" and four tubes for batteries. It may well be that in this entry there are errors, for instance no distinction between model "old" or "new" or both kits are the same, but as a reference work (not a catalog!) we have to show all of them and to explain.

  • Precio durante el primer año
  • 45.00 $
  • Ext. procedencia de los datos
  • Ernst Erb
  • Documentación / Esquemas (4)
  • November 1921 QST magazine Page 131

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