MFJ -853 Manual

INTRODUCTION

Congratulations on purchasing the MFJ-853 RF-Current Meter. The MFJ-853

is designed for measuring RF current distribution on antenna elements and

radials, ground wires, and coax shields. Here are some important features we

think you'll like:

Range: Measures RF current from as little as 300 mA to 3 Amps in three

ranges.

Low Interaction: Sense coil has minimal effect on circuits under test.

Large Cable Capacity: Accepts cables up to approximately 1/2" in diameter.

Power: No power source needed.

Non-metallic case: Minimizes field disturbance for accurate reading.

Handheld Size: Light weight, only 2.25" x 1" x 3.75"

1. Sense Coil: Clamps onto conductor under test, accepts diameters to around

1/2" .

2. Meter: Calibrated scale indicates readings in mA or Amps.

3. Range: Selects from three measurement ranges.

Using the Sense Coil: The sense coil snaps over wires and cables, as shown

below. To unlatch, squeeze the nylon carrier between thumb and forefinger--

applying opposing pressure.

The coil's top section should move forward

slightly. With pressure applied, lift up to open. Position the wire or cable inside

the core opening. Close the lid over the cable, pressing down until latch clicks

shut.

Press

Unlatch

Lift

Click!

Table of Contents

Do you have a question about the MFJ-853 and is the answer not in the manual?

Page 1 INTRODUCTION Congratulations on purchasing the MFJ-853 RF-Current Meter. The MFJ-853 is designed for measuring RF current distribution on antenna elements and radials, ground wires, and coax shields. Here are some important features we think you'll like: Range: Measures RF current from as little as 300 mA to 3 Amps in three ranges.
Page 2 Meter: The meter is scaled from 0 to 100. On the 100-mA range, readout is direct (100 = 100 mA). On the 1-A range, move the decimal point 2 places to the left (100 = 1.00 A). To convert meter readings made on the 30 mA, 300 mA, and 3-A ranges, multiply accordingly.
Page 3 2. MFJ Enterprises, Inc. agrees to repair or replace at MFJ's option without charge to the original owner any defective product under warrantee provided the product is returned postage prepaid to MFJ Enterprises, Inc.