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E-1

MODEL CLI-1450

INTRODUCTION

The VMA-3 Quarterwave Antenna is a field tunable antenna

designed to perform leakage measurements when used with the

WWG Model CLI-1450 leakage meters. The field tunable 1/4 λ

antenna can be cut to any frequency in the 115-140 MHz range.

INSTALLATION

The VMA-3 is easy to install. To adjust the VMA-3 antenna to the

desired frequency:

1. Using the cutting chart, locate the desired frequency on the

horizontal axis.

2. Draw a vertical straight line to the point of intersection with the

sloping line for the antenna to be tuned.

3. Draw a horizontal straight line to the point of intersection with

the vertical axis.

4. Read the approximate length "L" (in inches) of the antenna

element from the vertical axis.

Appendix E:

Technical Note -

VMA-3

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Wavetek MS1300 Specifiche Pagina 99