Radioamator i Krótkofalowiec 1974/09

Radioamator i Krótkofalowiec Polski
Year 24, September 1974, No. 9

• FROM HOME AND ABROAD
  
  • Investments of the 30th anniversary (201)
• ELECTRONIC COMPONENTS
  
  • Monolithic Integrated Circuits. Design Development of Integrated Low Frequency Power Amplifiers - Part 1 - Krzysztof Dąbrowski, M.Sc. (202)
• DID YOU KNOW THAT... (204)
• ELECTROACOUSTICS
  
  • Pseudo-quadraphonic attachment - Adam B. Myśliński (205)
  • The newest national speakers - Wojciech Kotecki (206)
  • Tube acoustic amplifier 20÷35 W - A.W. (221)
• ELECTRONIC MEASUREMENT
  
  • Electronically tuned Wien bridge generator - Krzysztof Zalas, M.Sc. Eng. (209)
  • A simple acoustic frequency meter - Jan Fabisiak, M.Sc. Eng. (220)
• AMATEUR RADIO COMMUNICATIONS
  
  • "BK" device with integrated circuit - Wiktor Chojnacki - SP5QU (212)
• SCHEMATIC OVERVIEW
  
  • Radio receiver "Elizabeth" - engineer Janusz Justat (213)
• OPERATIONAL TESTS
  
  • Stereophonic radio receiver "Elizabeth" - engineer Janusz Justat (216)
• MOTORIST CORNER
  
  • Power supply voltage converter for the "Safari" receiver - Jacek Sawicki, M.A. (218)
• POWER SUPPLY DEVICES
  
  • Regulated transistor power supply 4÷25 V/1.2 A - MSc. Eng. Stefan Ert-Eberdt (223)
• KRÓTKOFALOWIEC POLSKI (225)
• BEGINNERS' CORNER
  
  • About electric shock - R.T. (226)
• FROM RADIO AMATEUR PRACTICE
  
  • Practical transistor tester - A.G. (227)
  • Rewinding the tape in ZK tape recorders - Artur Chmura (227)
• FROM THE FOREIGN PRESS
  
  • A simple resonance meter - engineer Edward Wągrodzki (228)
• RADIO AMATEUR IN LOK
  
  • The intentions of the LOK communications department in the light of the resolutions of the 6th National LOK Congress - Col. Witold Konwiński - SP5KM (cover III)