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National PL-420B

National PL-420B; Panasonic, (ID = 1552181) Radio
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National PL-420B; Panasonic, (ID = 1552181) Radio
Select picture or schematic to display from thumbnails on the right and click for download.
Country:  Japan
Manufacturer / Brand:  Panasonic, Matsushita, National ナショナル (also tubes); Osaka
Year: 1954 Category: Broadcast Receiver - or past WW2 Tuner
Valves / Tubes 4: 1R5 1T4 1S5 3S4
Main principle Superheterodyne (common); ZF/IF 455 kHz
Wave bands Broadcast only (MW).
Power type and voltage Dry Batteries / 1.5 & 67.5 Volt
Loudspeaker Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 6 cm = 2.4 inch
Power out
from Model: National PL-420B - Panasonic, Matsushita,
Material Plastics (no bakelite or catalin)
Shape Very small Portable or Pocket-Set (Handheld) < 8 inch.

Test-Export of 1000 radios for the US-Market. The decision made at that time was the first step in opening up and expanding the U.S. market. Earphone available.

Note that the National brand could not be used in the USA and subsequently Panasonic was created as a brand.

Model PL-420B uses a National BL-145 (Eveready 467, RCA VS-016, Burgess XX-45) battery. Model PL-420A uses the smaller battery National BL-145B (Eveready 457, RCA VS-082, Burgess K-45) - probably the cabinets differ in the internal layout or exterior dimensions.

Mentioned in -- Schematic

Model page created by Mark Hippenstiel. See "Data change" for further contributors.

All listed radios etc. from Panasonic, Matsushita, National ナショナル (also tubes); Osaka
Here you find 2625 models, 2385 with images and 507 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.