In a vacuum, the range would be independent of frequency. I think that
two items are the main reasons why the terrestrial range decreases
with frequency: 1) atmospheric absorption/scattering and 2) more
specialized technology for higher frequencies, leading to fewer
attempts, lower transmit power, and higher receiver noise.

Sean


On Mon, Apr 26, 2010 at 9:09 AM, Electron <electron2k4@infinito.it> wrote:
> At 00.33 2010.04.26, you wrote:
>>UK records
>>=95 1.3GHz 2617km
>>=95 2.3GHz 1083km
>>=95 3.4GHz 980km
>>=95 5.7GHz 1244km
>>=95 10GHz 1275km
>>=95 24GHz 391km
>>=95 47GHz 203km
>>=95 76GHz 79.6km
>>=95 134GHz 17.7km
>>=95 145GHz 1.29km
>
> Looks like the higher the frequency, the lower the range.. why?
>
> Is it a limit of physics or just of technology?
>
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