Desconocido - Unknown 1
Radio Royam, Martín Mayor; Madrid
- Country
- Spain
- Manufacturer / Brand
- Radio Royam, Martín Mayor; Madrid
- Year
- 1933/1934
- Category
- Broadcast Receiver - or past WW2 Tuner
- Radiomuseum.org ID
- 236297
Advertisement in ACB, 15/12/1933, p.40
Advertisement in ACB, 31/01/1934, p.2
- Number of Tubes
- 5
- Main principle
- Superheterodyne (common)
- Tuned circuits
- 5 AM circuit(s)
- Wave bands
- Broadcast only (MW).
- Power type and voltage
- AC/DC-set / 125 Volt
- Loudspeaker
- Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 4 inch = 10.2 cm
- Power out
- 2.5 W (unknown quality)
- Material
- Wooden case
- from Radiomuseum.org
- Model: Desconocido - Unknown 1 - Radio Royam, Martín Mayor;
- Shape
- Tablemodel without push buttons, Mantel/Midget/Compact up to 14
- Dimensions (WHD)
- 280 x 200 x 150 mm / 11 x 7.9 x 5.9 inch
- Notes
-
This model can be found in an advertisement from 1933 (see pictures), detailing the use of Magnavox, or Rola or Jensen (spelled incorrectly as "Gensen") speakers, as well as the use of "Multivoltimetrica" resistance cords for it.
The model was made with Spanish components, and originally equipped with "ROYAM tubes". It was also sold by Bolsa de la Radio in Madrid.
For the documentation of the manufacturer, this model exists twice: under the Radio-Royam brand as well as under RCA USA (likely the actual maker) - with a slightly different cabinet.
- Price in first year of sale
- 195.00 ESP
- Mentioned in
- -- Original prospect or advert (ABC Sevilla, 15.12.1933, 31.01.1934)
- Other Models
-
Here you find 3 models, 3 with images and 0 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
All listed radios etc. from Radio Royam, Martín Mayor; Madrid
Collections
The model Desconocido - Unknown 1 is part of the collections of the following members.