MFJ MFJ-1924 Instruction Manual Download Page 5

MFJ-1924 Screwdriver Controller with Memory 

Instruction Manual 

Controllers that  have the 4 pin Molex plug. 

1.  The red wire needs to be fused and connected to the vehicle’s +12 

VDC supply. The size of the fuse depends upon the current requirement 
of the antenna motor. Typically a 5 Amp slow-blow fuse will work. 
Some installations may require additional wire. Use 16 AWG wire to 
add additional length.    

2.  The black wire needs to be connected to the vehicle (station) ground. 

If the supplied red and black wires are not long enough, Use 16 AWG 
wire to add additional length.   

        3.  Connect the 4 pin Molex to the antenna. 
 

motor control  

 

 

 

Antennas that do not have a 4 pin plug. The plug can be cut 

off.   Use the chart below for wire color and its function. 

 
 

CONTROL CABLE 

RED MOTOR 

WIRE 

BLACK MOTOR 

WIRE 

GREEN SENSOR 

 

WHITE  

SENSOR 

 
 

WARNING: 

An RF choke must be placed around the control lines at 
the antenna. The Controller may be damaged if an RF 
choke is not used.

 

Motor Operating Voltage 

This control unit is designed to operate with a screwdriver antenna that operates 
on 12 volts.  Many antennas operate on only 3 or 4 volts, a Dropping Resistor 
can be used inline with the motor wires to bring the voltage down.  Consult your 
antenna manual or manufacturer for the operating voltage. 

©

 2006 MFJ Enterprises, Inc. 

Summary of Contents for MFJ-1924

Page 1: ...Tel 662 32 Mo RPRISES INC dustrial Park Road le MS 39759 USA 3 5869 Fax 662 323 6551 del MFJ 1924 COPYRIGHT 2006 MFJ ENTERPRISES INC VERSION 0B CAUTION Read All Inst INSTRUC ructions Before Operating...

Page 2: ...Controller with Memory Instruction Manual Contents Introduction 1 Features 1 Front Panel 1 Installation 2 Motor Operating Voltage 3 Menu 3 Technical Assistance 5 Storing Memory 5 Schematic 6 2006 MFJ...

Page 3: ...roller is compatible with single and dual sensor setups If your antenna does not have a sensor installed contact the antenna manufacturer or MFJ Features 4 Digit Turns Display 10 Programmable Presets...

Page 4: ...The polarity of the motor connection determines the direction of the antenna If the motor moves in the wrong direction swap the wires or see the menu setup section for setting the correct direction 4...

Page 5: ...dd additional length 3 Connect the 4 pin Molex to the antenna motor control Antennas that do not have a 4 pin plug The plug can be cut off Use the chart below for wire color and its function CONTROL C...

Page 6: ...enna may result Menu The table below lists the features and options of the MFJ 1924 Use this table and the following section to adjust these settings specific to your screwdriver antenna and its requi...

Page 7: ...mode to display the current that is read from the current sensor In this mode when the antenna is moved the current drawn by the motor is shown Stalling the motor by moving the antenna all the way dow...

Page 8: ...Factory at 662 323 5869 You will be best helped if you have your unit manual and all information on your station handy so you can answer any questions the technicians may ask You can also send questi...

Page 9: ...MFJ 1924 Screwdriver Controller with Memory Instruction Manual 2006 MFJ Enterprises Inc 7...

Page 10: ...MFJ 1924 Screwdriver Controller with Memory Instruction Manual 2006 MFJ Enterprises Inc 8...

Page 11: ...The counter will increment each time the pins are touched together and then separated The up or down button must be press during the test The controller is good if the counter increments It will be t...

Page 12: ...als documents positional handbooks or other official publications The copy of this manual provided to the customer will not be updated to reflect current data Customers using this manual should report...

Page 13: ...MFJ 1924 Manual Version 0B Printed In U S A l Park Road 39759 300Industria Starkville MS...

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