[time-nuts] GPS backup for the stationary time and frequencyuser

[jimlux]

Brian Kirby wrote:
>  20 log(base10) (diameter in meters) + 20log(frequency in ghz) +17.8 = dbi
> 

That assumes some nominal efficiency?

I'll have to remember that one.. 17.8

It's like the 32.44 dB for free space loss between isotropes 1 km apart 
at 1 MHz
(+20log10(dist in km) + 20log10(freq in MHz))