无线电广播是以无线电波为传输广播节目载体的广播方式。世界公认的首次电台播音是1920年11月2日美国威斯汀豪斯公司在匹茨堡的KDKA电台播出哈定当选总统。此后，苏联、英国以及中国等许多国家纷纷建立了广播电台。
Wiley - The Mobile Radio Propagation Channel - Second Edition
Documentation for Silabs Si470x family FM Radio Receivers.
Source code for driving RFM02 radio transmitter module
This book is intended for the RF planners, to serve as a practical tool in their daily work designing indoor radio distr...
AU1200-2,45R and AU1200-2,45 Radio Relay Antennas The antenna in the picture is AU1200-2,
资料->【E】光盘论文->【E5】英文书籍->Digital Radio Systems on a Chip (英).pdf
射频识别技术[Radio Frequency Identification，RFID]是自动识别技术的一种，近几年发展非常迅速。射频识别技术的工作方式是利用射频方式进行非接触双向通信，以达到识别目标对象并交换数据。
This is source code for COS231 radio propagation model
this e-book is about radio frequency identification technology.
EIMAC Tube Catalog ( ref data) - Radio and TV Broadcasters (z-lib.org)