Blind receiver is one of the key technologies of software radio.
盲接收是软件无线电中的关键技术之一。
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Between January 2006 and April 2008, in Touch for China provided training in journalism, radio production and disability issues and rights to 41 blind and partially sighted men and women.
HF radio communication has a significant communication blind zone in the range of 200 kilometers usually. This disadvantage restricts its application in the near range tactical mobile communication.