MFJ-432 Voice Memory Keyer
1
MFJ-432 Voice Memory Keyer
Introduction
The
MFJ-432 Voice Memory Keyer
will take you to new dimensions in the Contest
world. Do poor band conditions leave you hoarse and frustrated? Not any more! By
storing your own natural voice in the MFJ-432
Voice Memory Keyer
, you can repeat the
same message as many times as necessary. You can
now
operate most of a contest by just
pressing a few buttons and still have your own voice when you're finished.
The
MFJ-432 Voice Memory Keyer
is capable of storing as many as four natural
sounding messages in a total of 20 seconds. It will also repeat stored messages
continuously. A built in speaker allows you to monitor your stored messages. Internal
jumpers let you customize your it to own rig. Contests have
never
been easier!
Connections
Power
A 12 Vdc 300 milliamp power supply should be used with the MFJ-432. The power jack
accepts a 2.1mm coaxial plug with the center conductor positive. An optional dc supply,
the MFJ-1312B, is available from MFJ. Connect your MFJ-1312B or compatible dc
supply (coaxial line with shield ground) into the power jack on the MFJ-432.
Radio and Microphone Connections
This unit supports Icom, Kenwood, or Yaesu radios with 8 pin microphone connectors.
Internal jumpers are used to set the unit for each make of radio. The MFJ-432 is set for
Kenwood at the factory. Jumpers can be changed to the appropriate settings for Icom or
Yaesu radios. The unit should simply be open and the jumpers adjusted to the Y settings
for Yaesu or the I settings for Icom. The jumpers should be changed on both HD1 and J4.
Output Level
The audio output level to your radio may be adjusted using the trimpot labeled OUTPUT
LEVEL CONTROL. The control is accesible through a hole in the back panel. A small
slotted screwdriver can be used to adjust the trimpot.
Audio In and Audio Out
The AUDIO IN and AUDIO OUT jacks accept standard mono or stereo 3.5 mm
miniature jacks. The AUDIO OUT jack is driven differentially across the tip and the
shield of the jack. The AUDIO IN jack is used to record audio from your radio or other
external source. The AUDIO IN jack should have the audio on the tip and ground on the
shield of the connector.
