Changzheng 长征 7501
Lanzhou 兰州无线电厂 Lanzhou Radio Factory; Lanzhou (Gansu, NW)
- Country
- People's Republic of China
- Manufacturer / Brand
- Lanzhou 兰州无线电厂 Lanzhou Radio Factory; Lanzhou (Gansu, NW)
- Year
- 1972 ??
- Category
- Broadcast Receiver - or past WW2 Tuner
- Radiomuseum.org ID
- 180858
Click on the schematic thumbnail to request the schematic as a free document.
- Number of Transistors
- 7
- Main principle
- Superheterodyne (common); ZF/IF 465 kHz; 3 AF stage(s); Reflex
- Tuned circuits
- 6 AM circuit(s)
- Wave bands
- Broadcast plus 2 Short Wave bands.
- Power type and voltage
- Line / Batteries (any type) / AC 220 / Battery 9 Volt
- Loudspeaker
- Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil)
- Material
- Wooden case
- from Radiomuseum.org
- Model: Changzheng 长征 7501 - Lanzhou 兰州无线电厂 Lanzhou
- Shape
- Tablemodel, low profile (big size).
- Notes
- The radio model Changzheng 长征 7501 (The Long March) receives broadcast 535 - 1605 kc, SW 3.9 - 8.5 mc and SW 3.5 - 18 mc. Sensitivity 灵敏度: 1 mV/m (1.5 mV/m). Selectivity 选择性: > 20 dB S/N (10 kc at 1000 kc). Set audio output 额定功率: 500 mW (1 Watt). The IF is most probably 465 kc. Loudspeaker is 8 ohm. One transistor 3AX81B is for the power unit as the two 2CP21 and the 2CW3.
- Literature/Schematics (1)
- 03-Transistor Radio Circuit Manual 1981 August (1 of 5) (page 96.)
- Author
- Model page created by Ernst Erb. See "Data change" for further contributors.
- Other Models
-
Here you find 1 models, 1 with images and 1 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
All listed radios etc. from Lanzhou 兰州无线电厂 Lanzhou Radio Factory; Lanzhou (Gansu, NW)