Tuesday, September 8, 2009

Radio Telephony

Radio telephony with this kind of walky Talky, can be used to communicate or talk with other people with a sufficient distance away. But the condition is a need to create one or more pairs. The higher the antenna that you pasan, the remote power pancarnya.
Components needed:
  1. RFC reel itself is made without a core ferit have koker O = 0.5 cm large wires
  2. Transistor (TR) 1 = 2SA104
  3. Transistor (TR) 2 = SB54
  4. Transistor (TR) 3 = SB54
  5. Resistor (R) 1 = 100ohm / 0.5 watt
  6. Resistor (R) 2 = 4K7ohm / 0.5 watt
  7. Resistor (R) 3 = 4K7ohm / 0.5 watt
  8. Resistor (R) 4 = 270Kohm / 0.5 watt
  9. Resistor (R) 5 = 400ohm / 0.5 watt
  10. Resistor (R) 6 = 35Kohm / 0.5 watt
  11. Resistor (R) 7 = 390ohm / 0.5 watt
  12. Resistor (R) 8 = 120ohm / 0.5 watt
  13. Resistor (R) 9 = 4K7ohm / 0.5 watt
  14. Condensator (C) 1 = 30uF/10 Volt
  15. Condensator (C) 2 = 0.05 UF
  16. Condensator (C) 3 = 1uF/10 Volt
  17. Condensator (C) 4 = 0.02 UF
  18. Condensator (C) 5 = 0.02 UF
  19. Condensator (C) 6 = 20pF
  20. Condensator (C) 7 = 0.04 UF
  21. Spoel antenna with koker diameter0, 8 with stem ferit
  22. Antenna with a minimum height of 5 meters
  23. 9 Volt output transformer
  24. Loudspeaker (LS) = 8ohm
  25. Batteray / Accu = 6 - 9 Volt
  26. Mic or condenser microphone that can be used
  27. Push the switch many-legged

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