Radio Shack 21-534 User Manual

Cat. No. 21-534
OWNER’S MANUAL
Please read before using this equipment.
CB/High-Frequency Ham
Power SWR Meter
21-534.fm Page 1 Thursday, August 5, 1999 3:53 PM
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Amateur Radio Directory

Radio Shack 21-534 Specifications

General

Type	Digital Multimeter
Functions	Voltage, Current, Resistance
DC Voltage Range	200mV to 1000V
AC Voltage Range	200V to 750V
DC Current Range	200µA to 10A
Display Type	LCD
Battery Required	9V

Summary

Introduction to the SWR Meter

Measuring SWR

Connecting the SWR Meter

Details the necessary coaxial cable and steps to connect the meter to the radio and antenna.

SWR Calibration and Measurement Procedure

Outlines the procedure for calibrating the meter and taking SWR measurements.

Interpreting SWR Readings

Provides a table and explanation for understanding different SWR values and their efficiency interpretations.

Improving SWR

Offers methods to improve SWR, including using correct cables and antenna mounting.

Measuring Power Output

Power Measurement Setup and Configuration

Details setting the meter's FUNCTION, RANGE, and MODE for accurate power measurement.

Performing Power Measurement

Instructs on transmitting and reading the power level on the meter's scales.

Care and Maintenance

Schematic Diagram

Specifications

Limited Ninety-Day Warranty