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>> putting your receiver in a metal box with the top removed solves the problem No. Radio can turn around corners. It can also bounce off things. Radio is lig
by sandworm101 3y ago
>> putting your receiver in a metal box with the top removed solves the problem
No. Radio can turn around corners. It can also bounce off things. Radio is light, but at a much longer wavelength. It is less like blocking a laser and more akin to blocking out sound waves. Blocking line-of-sight to the transmitter would block the laser but would do little to block sound waves.
- kurthr 3y agoYeah high frequency sound is a good analogy. Starlink is in the 11&40GHz region with wavelengths measured in cm which is about the equivalent to 20kHz. The other really annoying thing about radio waves is that even relatively long wavelengths can leak through really narrow cracks (<1mm) if they are long enough (eg a wavelength) in the right polarization.
- ethbr1 3y agoGPS is on 1575.42 and 1227.60 Mhz, though. Isn't that above the critical frequency you'd get ionosphere reflection at? (Which makes sense, since the signals are coming from outside it at LEO)