Hongxing 红星 Red Star 504

Nanjing 南京无线电厂 Nanjing Radio Factory, Nanjing

Data
Forum
Pictures
Collections

  • Year
  • 1956 ?
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 176171

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

 Technical Specifications

  • Number of Tubes
  • 5
  • Main principle
  • Superheterodyne (common); ZF/IF 465 kHz; 2 AF stage(s)
  • Tuned circuits
  • 6 AM circuit(s)
  • Wave bands
  • Broadcast plus 2 Short Wave bands.
  • Power type and voltage
  • Alternating Current supply (AC) / 110; 220 Volt
  • Loudspeaker
  • -Loudspeaker incorporated, but system not known.
  • Material
  • Wooden case
  • from Radiomuseum.org
  • Model: Hongxing 红星 Red Star 504 - Nanjing 南京无线电厂 Nanjing Radio
  • Shape
  • Tablemodel, low profile (big size).
  • Notes
  • The Hongxing 红星 Red Star model 504 has a full transformer. Same tube line up like 502 and 502-A. The same documentation is beginning page 180 (BRM 1959) for the models 504, 504-1, 504-2, 551, 552 and 553 but check the two slightly different schematics (both AC). They all have broadband 520 - 1600 kHz, SW 3.9 - 8 MHz and SW 9 - 16 MHz. Models 504-1 and 504-2 can also have two Russian tubes (6a2p for 6SA7GT and 6p1p for 6V6).

    According to BRM July 1959 on page 180: Model Hongxing 红星 504 (trad. Chinese = 紅星牌) and Panda-Xiongmao 熊猫 551 (trad. Chinese = 熊猫牌) share the same cabinet - but the Panda are for export 出口. The same is for 504-1 / 552 and 504-2 / 553. This manual is still in trad. Chinese, not simplyfied Chinese! Therefore the same manufacturers are written differently to later or other manuals.
  • Author
  • Model page created by Ernst Erb. See "Data change" for further contributors.

 Collections | Museums | Literature

 Forum