Radioamator i Krótkofalowiec (Radio Amateur & Short-waver) 1968/04

YEAR 18 - APRIL 1968 - No 4

• FROM THE COUNTRY AND ABROAD
  
  • Belgian Technology Week in Warsaw (77)
    "On January 15-21 this year, the Belgian Foreign Trade Office, in cooperation with the Supreme Technical Organization (NOT), organized an exhibition and a series of papers at the Museum of Technology at the Museum of Technology as part of the Belgian Technology Week, presenting the achievements of the Belgian industry, especially in the fields of nuclear energy, reactors, plutonium production, and chemicals and plastics, as well as electronic measuring equipment..."
  • An exhibition of Czechoslovak radio and television equipment (77)
    ''On February 12 - 19 this year, in the Czechoslovak Culture Center in Warsaw, the KOVO commercial headquarters demonstrated the latest models of equipment manufactured by the well-known company TESLA..."
  • News from the Hungarian industry (78)
    "The Hungarian electronic industry in search of sales markets cooperates with many foreign companies, using their licenses and documentation, as well as supplements its devices with components of a global brand..."

8 - 16 - channel SHR-8-16 type tape recorder for recording the course of airplane - air tower conversations

• Interesting facts from Japanese electronics (78)
  "Electronic watches promise a revolution in the manufacture of watches. The fantastic accuracy (e.g. 1 second delay per month) of handwatches based on the quartz oscillator and integrated circuit technology will in the future shift watches with mechanical drive and mechanical stability to a background.
  The Japanese company SUWA SEIKOSHA has developed a prototype of a manual watch based on the technique of integrated circuits..."

Electronic watch from SUWA SEIKOSHA

• ELECTRONIC SYSTEMS ON ELECTRON TUBES
  
  • Radio receiver with aperiodic FM demodulator (79)
    "For a long time, the development of electro-acoustic devices has been aimed at ensuring the best possible quality of broadcasting. Such devices, known as Hi-Fi devices, must, inter alia, have a wide acoustic frequency response, high sound dynamics, low harmonic content, low level of mains hum and noise... "
• SEMICONDUCTOR TECHNIQUE
  
  • Silicon epiplanar transistors (Conclusion on 3/68) (83)
    "Silicon epiplanar transistors are usually manufactured as n-p-n transistors by the diffusion doping method using the masking effect of silicon dioxide...
• MEASUREMENT TECHNIQUES
  
  • Oscilloscope measurement of the static characteristics of transistors (Ending from number 3/68) (86)
    ''' Switching circuits are perfect for producing stepped waveforms. Depending on the number of flip-flops (n) used, when they are connected in series, N = 2ⁿ equilibrium states can be obtained..."
• OVERVIEW OF THE SCHEMES
  
  • "Atol 19" television receiver (89)
    "Atol is a modern, unified and good quality television set, mass-produced by Gdańskie Zakłady Radiowe. It is equipped with 12 channels, enabling the reception of a TV program in bands I, II and III according to the OIRT standard, or CCIR..."
• MISCELLANEOUS
  
  • List of vocational schools for 1968/1969 (92)
• AMATEUR RADIO COMMUNICATION
  
  • Universal receiver for "Fox hunting" on the bands 3.5 MHz and 144 MHz (93)
    "The Fox Hunt competition is becoming more and more popular among young hams. This is evidenced by the number of competitors participating in provincial, national and international competitions. Every two years European championships are organized, and almost every year international competitions are held in one of the countries of people's democracy..."
• POLISH SHORT WAVE (99)
• FROM THE LIFE AND ACTIVITY OF SHORT WAVE CLUBS
  
  • Good job - SP4LZ (101)
• RADIO AMATEUR IN THE COUNTRY DEFENSE LEAGUE (LOK)
  • Nowa Huta's National Defense League Radio Club participation in the celebrations of the 50th anniversary of the Great October Revolution (102)
• FROM RADIO AMATEURS PRACTICE
  
  • Anode voltage stabilizer (104)
    "It is often necessary to stabilize the anode voltage, e.g. to power the line generator, RF stages. on the TV. The stabilizer shown schematically in the figure works with PCL82 and PL84 tubes, which are used in almost every TV set..."
• TIPS (104)
• PUBLISHING REVIEW (III cover)

PDF : RiK 1968/04 v1

The whole list