MFJ-434B Instruction Manual Voice Keyer
3
IMPORTANT WARNING: Remove the 9-volt battery when storing the keyer for extended
periods. Remember to reinstall the insulating sleeve on the snap clip.
CONNECTING AND OPERATING THE MFJ-434B
Front Panel:
MFJ Voice Keyer
POWERMIC
XMIT
VOLUME
MESSAGES
REPEAT
DELAY
ON
STOP MSG 1 MSG 2 MSG 3 MSG 4 MSG 5
PLAYREC
ONINT.
EXT.
INTERNAL
MIC.
EXTERNAL
MIC.
RECORD
PLAY
X10
X1
OFFOFF
MFJ -434B
External Mic Jacks Plugs for 8 pin round or modular microphone connectors
Internal Mic Built-in electret microphone location
Mic Int./Ext. Selects internal (in), or external (out) microphone
Xmit On/Off Disables transmitter PTT line when reviewing messages
Record (LED) Illuminates in record mode, flashes during recording (red)
Record/Play Selects record mode (in), or play mode (out)
Play LED Illuminates when selector is in play mode (green)
Volume Controls volume of monitor speaker (and audio out jack)
Power On/Off Main power switch--on (in), off (out)
Repeat Delay Varies message-repeat interval (0.5-50 secs or 5-500 secs)
X1/X10 Multiplies message-repeat interval by x1 (out) or x10 (in)
Stop Halts message, cancels endless-loop function
Messages Selects message slots 1-5 and starts record or playback