eakes
join:2000-10-20
Richardson, TX | reply to kfsutops
Re: What About When It Rains Directv and Dish are transmitted from satellite at 12 Ghz. Since the size of a rain drop is about the same size as one wavelength at 12 Ghz there is rain attenuation (loss of signal) in rain storms. Light rain does not usually affect the signal. Satellite radio is transmitted at 2.4 Ghz, there is no rain attenuation at this frequency. Also, XM has earth based transmitters to 'fill in the gaps' in the coverage. The XM antenna has two leads coming from it to the radio, one is for the satellite signal and the other is for the ground based signal. About the only time you will lose signal is in a garage, long underpass, or a tunnel. |
