MFJ-259D Instruction Manual
HF/VHF SWR Analyzer
ii
TABLE OF CONTENTS
1.0 INTRODUCTION......................................................................................................................................... 1
1.1
A Quick Word about Accuracy ................................................................................................ 1
1.2
Typical Uses............................................................................................................................. 2
1.3
Frequency Range...................................................................................................................... 2
2.0 POWER SOURCES ...................................................................................................................................... 2
2.1
External Power Supply............................................................................................................. 3
2.2
Using Internal Batteries............................................................................................................ 3
2.3
Using Rechargeable “AA” Type Batteries ............................................................................... 3
2.4
Using Conventional “AA” Drycell Batteries............................................................................ 4
2.5
“Power Saving” Mode (sleep mode) ........................................................................................ 4
3.0 MAIN MENU AND DISPLAY .................................................................................................................... 4
3.1
General Connection Guidelines................................................................................................ 4
3.2
Power-up Display..................................................................................................................... 5
3.3
Main MODE descriptions ........................................................................................................ 5
3.4
Blinking “VOLTAGE LOW” display warning ........................................................................ 6
4.0 MAIN (OR OPENING) MODE .................................................................................................................... 6
4.1
General Connection Guidelines................................................................................................ 7
4.2
Antenna SWR........................................................................................................................... 7
4.3
Coax Loss................................................................................................................................. 9
4.4
Capacitance .............................................................................................................................. 9
4.5
Inductance ................................................................................................................................ 10
5.0 ADVANCED OPERATION ......................................................................................................................... 11
5.1
Forward .................................................................................................................................... 11
5.2
General Connection Guidelines................................................................................................ 12
5.3
(Magnitude of) Impedance mode ............................................................................................. 12
5.4
Return Loss and Reflection Coefficient mode.......................................................................... 12
5.5
Distance to Fault mode............................................................................................................. 13
5.6
Resonance Mode ...................................................................................................................... 13
5.7
Percentage Transmitted Power................................................................................................. 14
6.0 ADJUSTING SIMPLE ANTENNAS............................................................................................................ 14
6.1
Dipoles ..................................................................................................................................... 14
6.2
Verticals ................................................................................................................................... 15
6.3
Tuning a simple antenna........................................................................................................... 15
7.0 TESTING AND TUNING STUBS AND TRANSMISSION LINES ........................................................... 15
7.1
Testing Stubs............................................................................................................................ 15
7.2
Velocity Factor of Transmission Lines .................................................................................... 16
7.3
Impedance of Transmission Lines or Beverage antennas......................................................... 17
7.4
Adjusting Tuners...................................................................................................................... 18
7.5
Adjusting Amplifier Matching Networks ................................................................................. 18
7.6
Testing RF Transformers ......................................................................................................... 19
7.7
Testing Baluns.......................................................................................................................... 19
7.8
Testing RF Chokes ................................................................................................................... 19
8.0 TECHNICAL ASSISTANCE........................................................................................................................ 20
FULL 12-MONTH WARRANTY ....................................................................................................................... 21