MFJ Enterprises MFJ-1272B Manual

MFJ-1272B TNC/Microphone Switch
Introduction
Thank you for purchasing the MFJ-1272B TNC/MIC Switch.
This switch is designed
connection of both your microphone and your TNC to the
radio.
The MFJ-1272B microphone switches were designed to be
used with any radio that has a
microphone connector.
connectors, MFJ offers 5 models:
MFJ Model Number TNC and Multimodes
MFJ-1272B All MFJ TNCs, TAPR TNC II clones, and PK-
12/96/900
MFJ-1272BX PK-232
MFJ-1272BYV KAM® VHF port, KPC-2, KPC-3
MFJ-1272BYH KAM HF port
MFJ-1272BZ PK-88
For circuit board revisions, refer to page 11.
CAUTION
Always check your radio's owner's manual to see if
there is a voltage on one of the pins of the microphone
before hooking up the microphone switch.
damage your radio by connecting the PTT line to a
voltage source. Do not connect any pin labeled as a
voltage source to PTT !
WARNING: MFJ Enterprises, Inc. is not responsible for
damaged radios or associated equipment.
your responsibility
connections will not damage the radio.
to allow simultaneous
standard, round, 8-pin
Because many TNCs have different
to make
You could
It is
sure your