• Country
• Japan

• Manufacturer / Brand
• Panasonic, Matsushita, National ナショナル (also tubes); Osaka

• Year
• 1933 ?

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 193095

• Number of Tubes
• 4

• Valves / Tubes
• UY224 UY224 UY247B KX-112B

• Main principle
• TRF with regeneration; Screengrid 1926-1935

• Tuned circuits
• 2 AM circuit(s)

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• Alternating Current supply (AC) / 100 Volt

• Loudspeaker
• - This model requires external speaker(s).

• Material
• Metal case

• from Radiomuseum.org
• Model: National R-48 [chassis only] - Panasonic, Matsushita,

• Shape
• Chassis only or for «building in»

• Notes

• See also the National R-48 in wooden case (tombstone-shaped).

• Literature/Schematics (4)
• National Catalog

• Author
• Model page created by Konrad Birkner † 12.08.2014. See "Data change" for further contributors.

• Other Models

• Here you find 3040 models, 2816 with images and 631 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Panasonic, Matsushita, National ナショナル (also tubes); Osaka