Precision Condenser Micrometer Dial PW Series PW-1 PW-2 PW-3 PW-4
National Company; Cambridge & Malden (MA)
- País
- Estados Unidos
- Fabricante / Marca
- National Company; Cambridge & Malden (MA)
- Año
- 1934–1960 ?
- Categoría
- Pieza de radio (no módulo)
- Radiomuseum.org ID
- 286207
-
- alternative name: National Toy Co.
- Brand: Thrillbox
- Gama de ondas
- - no hay
- Tensión de funcionamiento
- No necesita alimentación
- Altavoz
- - - No hay salida de sonido.
- Material
- Materiales diversos
- de Radiomuseum.org
- Modelo: Precision Condenser Micrometer Dial PW Series [PW-1 PW-2 PW-3 PW-4] - National Company; Cambridge &
- Anotaciones
-
The National PW Series Dials were introduced in 1934, along with the National HRO receiver. It is a combination of a geared variable condenser with a micrometer dial. The worm gear drive has a ratio of 20 to 1. It was available with a single or ganged condenser.
PW-1 Single Section Condenser $13.50 PW-2 Two Section Condenser $17.00 PW-3 Three Section Condenser $20.50 PW-4 Four Section Condenser $ 24.00
The PW Series of Dials were most famously used on the National HRO series of receivers, from the original through the HRO-60. A variation of the dial was even used in the 1960s on the solid-state HRO-500. However, they were also used on other National receivers, such as, the 1-10, 1-10A, and HFS.
- Precio durante el primer año
- 24.00 USD
- Mencionado en
- National Catalog No. 240 - 1934
- Autor
- Modelo creado por Wayne Childress. Ver en "Modificar Ficha" los participantes posteriores.
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Colecciones
El modelo Precision Condenser Micrometer Dial es parte de las colecciones de los siguientes miembros.