Range of free band

venkatkumar

@venkatkumar-xPKP79 • Oct 22, 2024

Oct 22, 2024

1.0K

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

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venkatkumar

@venkatkumar-xPKP79 • Sep 30, 2008

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

@docel-OoPbTa • Sep 30, 2008

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.
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sauravgoswami

@sauravgoswami-UAfTlI • Sep 30, 2008

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

@venkatkumar-xPKP79 • Oct 3, 2008

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

what is HAM radio frequency?
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sauravgoswami

@sauravgoswami-UAfTlI • Oct 3, 2008

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

@docel-OoPbTa • Oct 3, 2008

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

@thebigk • Oct 3, 2008

No flames, please!

We all are here to share knowledge; everyone's intention is to help each other.

#peace#
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sauravgoswami

@sauravgoswami-UAfTlI • Oct 7, 2008

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!!!
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docel

@docel-OoPbTa • Oct 7, 2008

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

@venkatkumar-xPKP79 • Oct 8, 2008

Frequency mixer

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

@venkatkumar-xPKP79 • Oct 8, 2008

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