MFJ -5124K/Y Instruction Manual
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MFJ -5124K/Y Instruction Manual

Radio interface
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Radio Interface
Model MFJ-5124K/Y
INSTRUCTION MANUAL
CAUTION: Read All Instructions Before Operating Equipment !
MFJ ENTERPRISES, INC.
300 Industrial Park Road
Starkville, MS 39759 USA
Tel: 662-323-5869 Fax: 662-323-6551
COPYRIGHT
200
5
MFJ ENTERPRISES, INC.
VERSION 0A

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Summary of Contents for MFJ MFJ-5124K/Y

  • Page 1 Radio Interface Model MFJ-5124K/Y INSTRUCTION MANUAL CAUTION: Read All Instructions Before Operating Equipment ! MFJ ENTERPRISES, INC. 300 Industrial Park Road Starkville, MS 39759 USA Tel: 662-323-5869 Fax: 662-323-6551 COPYRIGHT MFJ ENTERPRISES, INC. VERSION 0A...

  • Page 2: Table Of Contents

    Jumper Settings....................2 Kenwood Radio Interface ..................2 Connections ....................3 Operation ......................3 Yaesu Radio Interface.................... 4 Connections for FT-100, FT-857 and FT-897..........4 Connections for FT-847.................. 4 Operation ......................5 Technical Assistance....................5 Schematic....................... 6 © 2005 MFJ Enterprises, Inc.
  • Page 3 MFJ-5124K/Y Radio Interface Instruction Manual THIS PAGE IS LEFT BLANK INTENTIONALLY © 2005 MFJ Enterprises, Inc.

  • Page 4: Introduction

    MFJ-5124K/Y Radio Interface Instruction Manual Introduction The MFJ-5124 Radio Interface main unit contains all the electronics that allows users of AT-300 compatible Kenwood transceivers and certain Yaesu transceivers with CAT system to connect to the MFJ-991, MFJ-993 and MFJ- 994 IntelliTuner™ Automatic Antenna Tuners. With this interface, DC power to the radio interface and the tuner is supplied by the radio, except FT-847.

  • Page 5: Jumper Settings

    MFJ-5124K/Y Radio Interface Instruction Manual Jumper Settings Two jumpers, JP1 and JP2, inside the MFJ-5124 are used to select the radio to interface with. To change these jumper settings: 1. Disconnect the MFJ-5124 from the radio and the tuner. 2. Open the MFJ-5124 case by removing the two screws on the bottom.

  • Page 6: Connections

    MFJ tuner keep bouncing ( TURN ON RADIO appears on the MFJ-993) and do not go away, then move jumper JP2 to the B position. For other Kenwood radios, the External Antenna Tuner menu in the radio menu system must be enabled, such as the TS-450S and the TS- 690S (set jumper JP2 to the B position).

  • Page 7: Yaesu Radio Interface

    2. Insert the 2.1 x 5.5 mm coaxial power plug into the tuner’s POWER jack. 3. Insert the 8-pin modular plug into the MFJ-5124’s TO RADIO jack. 4. Important: Make sure the DC power to the radio has been turned off.

  • Page 8: Operation

    MFJ Technical Service at 662-323- 0549 or the MFJ 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.

  • Page 9: Schematic

    MFJ-5124K/Y Radio Interface Instruction Manual Schematic © 2005 MFJ Enterprises, Inc.
  • Page 10 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.
  • Page 11 MFJ ENTERPRISES, INC. MFJ-5124K/Y Manual 300 Industrial Park Road Version 0A Starkville, MS 39759 U.S.A. Printed In U.S.A.

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