The radio amateur's handbook 

 - 48th ed. 
 - [S.l.] :  American radio rely league,  1971 
 - 610 p. ;  25 cm. 
<br/><br/><label>ISBN: </label> USD 10.00 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Wireless communication systems<br/>Satellites in telecommunication<br/>Radio relay systems
<br/><br/><label>Dewey Class. No.: </label>621.384