J-654 hamProAudio
TM
Microphone Equalizer/Conditioner
Instruction & Technical Manual
-10-
SYSTEM SETUP
Front panel view of Mic Jacks.
Refer to this drawing for the numbering of the headers from 1 to 8. The RJ-45 is numbered with
the clip down. Note the position of the key for the 8 pin round mic jack. This could be rotated on
your particular unit.
INTERNAL JUMPER BLOCKS
The Jumper Installation diagrams within this instruction manual will help you in
setting up your MFJ-654 to match your radio. If your radio is not listed with the
diagram, it means that we have not verified your radio to use that diagram. You
can try to install jumpers as indicated. If that does not work, please refer to the
radio manual to identify the MIC pin assignment for you radio then follow the
instructions given at the end of this section in the MFJ-654 instruction manual to
install the jumpers.
ICOM 8-Pin Round Microphone Setup:
IC-255, 288, 28, 290, 38A, 375, 707, 718, 725, 726, 728, 729, 730, 735, 737, 745, 746, 746PRO,
751, IC-756, 756PRO, 756PROII, 775DSP, 761, 78, 781, 910H
This diagram may cover some
other radios in the ICOM product
line with 8-pin round microphone
jack.
If there are any Questions
concerning the information
provided, please refer to your
RADIO INSTRUCTION
MANUAL.
MFJ is neither liable nor
responsible for any mistakes or
errors in the information
provided.
Receive Audio is taken from the
Headphone Audio Output.
Figure 5: ICOM 8-Pin Round Microphone Setup
