Radio Shack 21-534 Owner's Manual page 2

21-534.fm Page 2 Thursday, August 5, 1999 3:53 PM
INTRODUCTION
Your RadioShack CB/High-Frequency Ham Power SWR
Meter helps you tune your CB or amateur radio system for
the best performance.
CB and amateur radio systems work best when the antenna
system's impedance closely matches the transmitter's out-
put impedance. The meter's standing wave ratio (SWR)
function helps you trim your antenna to the precise length
that produces the maximum transmit power. The meter's
power meter function measures your radio's peak envelope
power (PEP) or average power.
Carefully read all of these instructions to get the best use
from this meter.
Warning: You can use this meter to make measurements on
equipment that uses high voltages. Carefully observe all
safety precautions provided with the equipment you are test-
ing.
Note: You need a separate 50-ohm coaxial cable (such as
RG-58U) with a PL-259 connector connected to both ends
(such as Cat. No. 278-968, not supplied), long enough to
reach from your radio's antenna jack to the back of the
meter.
© 1998 Tandy Corporation.
All Rights Reserved.
RadioShack is a registered trademark used by Tandy Corporation.
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