• Country
• Japan

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

• Year
• 1966

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 133469

Click on the schematic thumbnail to request the schematic as a free document.

• Number of Tubes
• 18

• Valves / Tubes
• 6AB9 6BE6 6BA6 6AU6 6AU6 6BA6 12AT7 12AX7 12AX7 12AX7 12AU7 12AX7 12AU7 12AU7 6BQ5 6BQ5 6BQ5 6BQ5

• Number of Transistors

• Semiconductors
• SD-1A OA70 OA79 SC-15

• Main principle
• Superheterodyne (common); ZF/IF 455/10700 kHz

• Tuned circuits
• 6 AM circuit(s)     11 FM circuit(s)

• Wave bands
• Broadcast, Short Wave plus FM or UHF.

• Power type and voltage
• Alternating Current supply (AC) / 117; 200; 220; 240 Volt

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

• Power out
• 60 W (max.)

• Material
• Wooden case

• from Radiomuseum.org
• Model: National FM Multiplex MFB Stereo Amplifier SA-52H - Panasonic, Matsushita,

• Shape
• Book-shelf unit.

• Dimensions (WHD)
• 470 x 160 x 320 mm / 18.5 x 6.3 x 12.6 inch

• Notes

• The National SA-52H amplifier / tuner with Motional Feed Back (MFB) covers three wavebands:

  • MW: 525 - 1605 kHz
  • SW: 3.9 - 12 MHz
  • FM: 88 - 108 MHz

  The MFB speakers with the designation SB-88H have four connections: two for the signal and two for the feedback (MFB coil in front of speaker). A switch at the front regulates the influence of the feedback sensor inside the MFB speakers.

  The SA-52H can also be used with ordinary speakers from 4 to 32 ohms.

  Diodes listed once per type, multiples are:  4 x SD-1A, 2 x OA70, 5 x OA79

  See also National SA-51H with different audio output tubes 4 x 30MP27

• Net weight (2.2 lb = 1 kg)
• 14 kg / 30 lb 13.4 oz (30.837 lb)

• Price in first year of sale
• 979.00 DM

• External source of data
• Sjaak van Schaik

• Source of data
• -- Original prospect or advert

• Literature/Schematics (1)
• -- Original-techn. papers.

• Author
• Model page created by Ernst Erb. See "Data change" for further contributors.

• Other Models

• Here you find 3072 models, 2849 with images and 635 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