منابع مشابه
Amateur Radio Astronomy
After a brief introduction on the theoretical and technical principles of radioastronomy, the author proposes to link the concepts of the discipline with the activity of amateur research. They will discuss some areas of work truly accessible to amateur experimenters, and the possible outcomes within the description of feasible projects, together with the analysis of the equipment and the necess...
متن کاملLocal Distribution in the Amateur Radio Environment
Packet radio is of ten used as a means of access ing comput ing faci l i t ies or , more general ly , a larger ter res t r ia l network. In th is respect , i t can be seen as a form of local dis t r ibut ion. Similar ly , in te l l igent repeaters in terconnect ing s ta t ions that are not in one a n o t h e r ’ s h e a r i n g r a n g e c a n b e t h o u g h t o f a s p e r f o r m i n g a n a...
متن کاملConvolutional Decoders for Amateur Packet Radio
This paper describes two freely available convolutional decoders written in the C language. One implements the Fano algorithm for sequentially decoding three rate l/2 K=32 codes while the other implcmcnts the Viterbi algorithm for maximum likelihood decoding of the rate l/2 K=7 NASA Standard code. Both support 8-W soft-decision decoding with arbitrary metric tables and perform according to theory.
متن کاملPacket Radio in the Amateur Service
Ahstruct -During the past several years there has been much activity in the development of networking hardware and software for personal computers. At the same time the amateur radio community has been equally active in the development of networking equipment and procedures especially suited for radio circuits. Although the initial efforts have been with terrestrial circuits, experimentation wi...
متن کاملAn Amateur 900 MHz Spread-Spectrum Radio Design
System design principles and high-level design details are described for a new spreadspectrum radio design for the 900 MHz. Amateur band. The radio is designed to provide a 10-base-T interface as the data port, and is designed to provide transport of IP-based data. It is planned to provide both stand-alone and fully-networked hub configurations. The design is based on Frequency-Hopped Spread Sp...
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ژورنال
عنوان ژورنال: IEEE Microwave Magazine
سال: 2019
ISSN: 1527-3342,1557-9581
DOI: 10.1109/mmm.2019.2891830