Samsung 20-006A User Manual

Using the antenna for transmitting

RadioShack is a trademark used by Tandy Corporation.

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

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-
mitting frequency’s

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.

• When you use the antenna to transmit, you must calculate the

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).

Use this formula to calculate the proper length for a

wavelength transmitting an-

tenna:

2834

Freq. in MHz

Antenna Length in Inches

Example: 2834

147 (MHz) =19.3 Inches

20-006.fm Page 1 Tuesday, August 3, 1999 2:25 PM