Patent ID: 6690921
Filing Date: 2004-02-10
Classification: H04B

Abstract:
A receiving apparatus comprising:an outdoor receiving unit; a main apparatus; and a transmitting means for transmitting a receiving signal from the outdoor receiving unit to the main apparatus; wherein the outdoor receiving unit includes, a receiving filter for passing the receiving signal within a predetermined bandwidth, a first pilot signal generating means for outputting a first pilot signal, a first adding means for adding the first pilot signal to a signal being passed through the receiving filter, a receiving amplifier for amplifying a signal added by the first adding means, a second pilot signal generating means for outputting a second pilot signal which has a frequency different from the first pilot signal, and a second adding means for adding the second pilot signal to an output side of the receiving amplifier, and the main apparatus includes an abnormality detecting means for detecting abnormality of the outdoor receiving unit according to the first pilot signal and the second pilot signal contained in a signal which is supplied from the outdoor receiving unit via the transmitting means.