MFJ-1272B
Instruction Manual
9
Connections
Connection of the MFJ-1272B is very simple.
1.
Connect your radio's microphone to the microphone connector on the front
panel of the MFJ-1272B. Be careful not to bend any of the microphone
connector pins. If the microphone plug does not insert easily, then
do not
force it. Find out what the problem is. Tighten the threaded portion of the
microphone securely.
2.
Connect the 8-pin MIC plug which exits the rear of the MFJ-1272B, to the
microphone connector on the radio. Be careful not to bend any of the
microphone connector pins. If the microphone plug does not insert easily,
then
do not
force it. Find out what the problem is. Tighten the threaded
portion of the microphone securely.
3.
Connect the TNC cable which exits the rear of the MFJ-1272B, to the TNC.
External Receive Audio Connection
If you have a radio without RECEIVE AUDIO on the microphone connector, you will
need to perform steps 4 and 5.
4.
Connect a cable from the headphones or speaker out jack of the radio to the
AUDIO IN jack of the MFJ-1272B. The AUDIO IN jack on the TNC/MIC
switch requires an RCA male phono plug.
5.
Connect a speaker to the EXT. SPKR. jack on the back of the MFJ-1272B.
The EXT. SPKR. jack requires a 3.5mm
mono
plug, with the tip being positive
and the sleeve being ground.