Samsung Satellite Radio 20 006A User Guide

20-006.fm Page 1 Tuesday, August 3, 1999 2:25 PM  
Cat. No. 20-006A  
Telescoping Antenna for Portable Scanners  
and Walkie Talkies  
You can use this telescoping antenna for either receiving or transmitting. You can  
use it as a receiving antenna from 25 MHz through the 1296 MHz Ham Band, and  
you can use it as a 1/4 wavelength transmitting antenna from 130 MHz through 535  
MHz.  
USING THE ANTENNA FOR TRANSMITTING  
For transmitting, you must set the antenna length as close as possible to the trans-  
1
mitting frequency’s /4 wavelength. This ensures the best possible transmission by  
using the proper standing wave ratio (SWR).  
Cautions:  
• When you use the antenna to transmit, you must always collapse the section  
located just above the loading coil. If you do not, you might damage the  
antenna and/or your radio.  
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• When you use the antenna to transmit, you must calculate the /4 wavelength  
and adjust the antenna length accordingly. If you do not do this, you can dam-  
age your transmitting equipment due to an improper standing wave ratio  
(SWR).  
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Use this formula to calculate the proper length for a /4 wavelength transmitting an-  
tenna:  
2834  
Freq. in MHz = Antenna Length in Inches  
Example:  
2834  
147 (MHz) =19.3 Inches  
© 1996 Tandy Corporation.  
All Rights Reserved.  
RadioShack is a trademark used by Tandy Corporation.  
 
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