Samsung 20-006A User Manual
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 transm itting. You can
use it as a
you can use it as a
MHz.
USING THE ANTENNA FOR TRANSMITTING
receiving
antenna from 25 MHz through the 1296 MHz Ham Ba nd, and
1
/4 wavelength
transmitting
antenna from 130 M H z t hrough 5 35
For transmitting, you must set the antenna length as close as possible to the transmitting frequency’s
1
/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.
1
• When you use the antenna to transmit, you must calculate the
/4 wavelength
and adjust the antenna length acc ordingly. If you do not do this, you can damage your transmitting equipment due to an improper standing wave ratio
(SWR).
Use this formula to calculate the proper len gth for a
1
/4 wavelength transmitting an-
tenna:
2834
Freq. in MHz
=
Antenna Length in Inches
Example: 2834
147 (MHz) =19.3 Inches
© 1996 Tandy Corporation.
RadioShack is a trademark used by Tandy Corporation.
All Rights Reserved.
g
20-006 .fm Page 2 Tuesday, August 3, 1999 2:25 PM
USING THE ANTENNA FOR RECEIVING
For the best reception, adjust the antenna length as shown below.
Frequency Antenna Length
25–50 MHz (VHF Low)
50–54 MHz (Ham)
108–136 MHz (Aircraft)
138–144 MHz (Government)
144–148 MHz (Ham)
148–174 MHz (VHF Hi
h)
220 MHz (Ham)
380–450 MHz (UHF Low)
470–512 MHz (UHF TV)
800–900 MHz
1296 MHz (Ham)
Extend All Nine Sections
Extend Only the Top Four Sections
Extend Only 1 to 3 Lower Sections
RadioShack Limited Warranty
This product is warranted against defects for 90 days from date of purchase from
RadioS ha c k c om p any-ow ne d s to r es an d a ut h orized RadioSha ck fr a nc hi se e s an d d ea lers. Wit h in th is period, w e w i ll r epair it w i th ou t c ha rge f o r parts an d l ab or. Sim ply br in g
your RadioShack sales slip as proof of purchase date to any RadioShack store. Warranty does not cover transportation costs. Nor does it cover a product subjected to misuse or accidental damage.
EXCEPT AS PROVIDED HEREIN, RadioShack MAKES NO EXPRESS WARRANTIES
AND ANY IMPLIED WARRANTIES ARE L IMITED IN DURATION TO THE DURATION
OF THE WRITTEN LIMITED WARRANTIES CONTAINED HEREIN. Some states do
not permit limitation or exclusion of implied warranties; therefore, the aforesaid limitation(s) or exclusion(s) may not apply to the purc haser.
This warranty gives you specifi c legal rights and you may also have other rights which vary fr om
state to state.
We Service What We Sell
10/95
RadioShack
A Division of Tandy Corporation
Fort Worth, Texas 76102
9A6 Printed in T ai wan
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