Modifications A to D - The World of Free Packet Software Amsterdam
       THE NL3ASD MODIFICATION FILES - THE HAM RADIO MODIFICATION - PAGES PAGES E TO HHOMEPAGE
   From :N3GPP
     To :MOD
   Date :920202/1710

  Msgid :BF 6
Subject :YAESU FT-990





GENERAL COVERAGE TRANSMIT MOD FOR MARS OPERATION YAESU FT-990

REMOVE TOP COVER

LOCATE AND REMOVE CTRL BOARD (CTRL BD. IS THE FAR RIGHT VERTICLE BD

LOOKING AT THE TRANCEIVER FROM THE FRONT. REMOVE TWO PHILLIPS HEAD

SCREW AND LIFT OUT BOARD.)

LOCATE JP5002 (JP5002 IS LOCATED ON THE FAR RIGHT OF THE PC BOARD

NEAR THE TOP OF CHIP Q5016. Q5016 IS THE THIRD BIG CHIP LOCATED AT

THE FAR RIGHT OF THE PC BOARD.)

SOLDER JUMPER JP5002

RE-INSTALL BOARD

SET MODE TO CW

METER TO ALC

RF CTRL FULLY CLOCKWISE

ADJUST VR1003 AT 5.000 Mhz TO FULL ALC METER READING.

ADJUST VR1005 AT 8.000 Mhz TO FULL ALC METER READING.

VR1003/1005 ARE LOCATED ON THE FAR LEFT VERTICLE BOARD LOOKING AT

THE TRANCEIVER FROM THE FRONT. THE POT ARE ADJUSTABLE FROM THE TOP.

THERE IS NO NEED TO REMOVE THIS BOARD.

RE-ASSEMNBLE THE RADIO AND YOU ARE READY TO GO.



I WOULD LIKE TO HEAR OF ANY OTHER MODS AVAILABLE FOR THE FT-990.

I'AM SURE THERE IS A LOT OF STUFF THAT CAN BE DONE THROUGH THE

KEYPAD LIKE ON THE KENWOOD TS-850.

                                      73'S BOB

SOURCE: The QRZ Windows Ham Radio CDROM



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