Range of free band

[venkatkumar]

What is the range of licence-free frequency band upto 1 kilometers?

[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]

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.

[The_Big_K]

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??