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MFJ-1272M Instruction Manual
Other Notes
All of the jumper designations and wiring on the MFJ-1272M come setup for Yaesu
and Kenwood transceivers.
So, if your RECEIVE AUDIO is on pin 3 of your
Kenwood microphone, then you would place a jumper on R3A in the RECEIVE
section of HD1. You may need to change the installed jumpers for the radio you
are trying to use. The MFJ-1272M is compatible with the the Yaesu FT-2400H and
FT-2500H. All other Yaesu transceivers will either be the standard round 8-pin
screw-on type, or in the case of the FT-3000, FT-8000 and FT-8500, all packet
data is taken in and out through the DATA PORT in the back of the radio. In this
case, the MFJ-1272M is totally incompatible.
If you want to use the MFJ-1272M with an Icom or Radio Shack transceiver, then
all jumper designations need to be thought of in reverse order. This is due to the
numbering scheme on the Radio Shack and Icom microphones.
So if your
RECEIVE AUDIO is on pin 3 of your Icom microphone, then you would place a
jumper on R6A in the RECEIVE section of HD1.
The MIC pins on the Radio Shack and Icom radios are numbered 1 through 8, from
left to right. Whereas, the Yaesu and Kenwood radio MIC pins are numbered 1
through 8, from right to left. The only Yaesu transceivers that are compatible with
this unit are the FT-2400 and FT-2500. All other Yaesu transceivers, such as the
FT-3000, FT-8000, and FT-8500, use data ports, which are located in the back of
the radios for all packet type communications.
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