Range of free band

Replies

• 

  venkatkumar

  What is the range of license-free band frequencies
  upto 1 kilometers?It's very urgent.....
• 

  docel

  There is NO licence-free band for a received range of 1km.
  
  This is difficult to digest, as all power output constraints talk in terms of ERP which is a function of bandwidth and Frequency.
  Besides, the main rule for Licence-free band operations is Low power Short Range devices without external antennae.
  All specifications are in "funny" techno-legal language, less understood by lesser mortals. But the end result is the same: There is NO Licence-free band for a range of 1KM.
  Meaning, the rules does not allow Free communication beyond 100m.
• 

  sauravgoswami

  Buddy,why dont ya try using HAM radio frequency!!!!they are available for free
• 

  venkatkumar

  sauravgoswami

  Buddy,why dont ya try using HAM radio frequency!!!!they are available for free

  
  what is HAM radio frequency?
• 

  sauravgoswami

  well tat depends on the operator,i will definately let u know the frequency in my area!!!!
• 

  docel

  Sorry, friend.....HAM (Amateur Radio) frequencies are NOT free.
• 

  Kaustubh Katdare

  No flames, please!
  
  We all are here to share knowledge; everyone's intention is to help each other.
  
  #peace#
• 

  sauravgoswami

  hey docel,why dont ya take permission form the authorities,they provide access to frequencies for experimental purposes and wat more, u can get watever bandwidth u require,u just have to convince them!!!
• 

  docel

  Huh????
  Have you tried for that permission anytime??
• 

  venkatkumar

  Frequency mixer
  
  I want a frequency mixer circuit using op-amp(frequency modulation)...how to add the two frequencies in the transmission...
• 

  venkatkumar

  What is HAM frequency and the range of HAM frequency?
  Which band is free for transmission upto 100m?