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MFJ-1278B MULTI-MODE APPENDIX A RADIO HOOKUP
RADIO HOOKUP
Table: A-1 HOOKUP FOR SPECIFIC RADIOS
MFGS. OR
RADIOS
CONNECTOR
TYPE
MIC.
AUDIO To
pin 1 of
1278B
PTT To
Pin 3 of
1278B
RX. AUDIO
To pin 4 of
1278B
GROUND
To pin 2 of
1278B
KENWOOD
4 pin Pin 1 Pin 2 Speaker Pin 3,4
5 pin Pin 1 Pin 2 Speaker Pin 4,5
6 pin Pin 1 Pin 2 Speaker Pin 6
8 Pin Pin 1 Pin 2 Speaker Pin 7,8
TR-2500
HTs Tip-Lg. Sleeve-
Lg
Tip-Sm. Sleeve-Sm
TR-x600
HTs Ring-Lg. Sleeve-
Lg
Tip-Sm. Sleeve-Sm
TH-x1xx
" " " " "
TH-x15
" " " " "
TH-x5
" " " " "
TS-450S
8-Pin Pin 1 Pin 2 Speaker Pin 8
ICOM
4 pin Pin 1 Pin 2 Speaker Pin 4
8 pin Pin 1 Pin 5 Speaker Pin 6,7
HTs* Tip-Sm Tip-Sm Tip-Lg. Sleeves
IC-27A
8-Pin Pin 1 Pin 5 Pin 8 Pin 6,7
IC-28A
8-Pin Pin 1 Pin 5 Pin 8 Pin 6,7
IC-735
8-Pin Pin 1 Pin 5 Pin 8 Pin 6,7
YAESU
4 pin Pin 2 Pin 3 Speaker Pin 1
8 Pin Pin 8 Pin 6 Speaker Pin 7
FT-208
HTs Pin 1 Pin 3 Pin 2 Pin 4
FT-x09
HTs* Tip-Sm Tip-Sm Tip-Lg Sleeves
FT-x3
HTs* " " " "
FT-727
HTs* " " " "
FT-747
8-Pin Pin 8 Pin 6 Speaker Pin 7
FT-757
8-Pin Pin 8 Pin 6 Speaker Pin 7
FT-767
8-Pin Pin 8 Pin 6 Speaker Pin 7
ALINCO
DR-1200
8-Pin Pin 1 Pin 2 Pin 6 Pin 8
ALR-22H
8-Pin Pin 1 Pin 2 Speaker Pin 8
*: Some ICOM and Yaesu HTs key the transmitter by completing the ground connection on
the microphone. If your HT is one that is noted in the above chart, you must follow the
instruction given in Chapter 3 of this instruction manual.