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
P OWE R
M IC
X M IT
V OLUM E
M E SS AGES
RE P E AT
DE LAY
O N
S T O P
MS G 1
MS G 2
MS G 3
MS G 4
MS G 5
P L AY
RE C
O N
I N T .
E X T .
I N TER N A L
MI C .
E X T E RNAL
MIC.
RE CO RD
P L AY
X 10
X 1
O F F
O F F
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
