MFJ-434B Instruction Manual Voice Keyer
9
C. Off-Air or External Audio Source:
Set
Mic
switch to
Int
and
plug a line level audio
source into the
Audio In
jack on the rear panel. Installing a plug in the
Audio In
jack
disables the electret mic. Line level sources should not exceed 0-dBm.
4. Select A Message Slot:
Choose from
MSG1-MSG5
on the front panel. Press your selection
and watch the
Rec
LED (it should flash within about two seconds). The first flash indicates
recording has begun. To avoid recording "dead air", begin speaking the moment the red
Rec
LED starts flashing.
5.
Record Your Message:
The voice memory IC will record for as long as the memory button
is held in, but
no longer than the memory's capacity
. The
Rec
LED will begin flashing
rapidly to notify you when the memory time in each message block is nearly expired. To
conserve memory and prevent accidental over writing, release the memory button
immediately after your last word.
Message Memories
The
MSG
storage space is actually one continuous block of memory with start cues inserted at 5
points along its span. These form 5 message slots. To use all 5 slots, each entry must not exceed
the times specified below:
MSG1
MSG2
MSG3
MSG4
MSG5
32 Seconds
10 Seconds
10 Seconds
10 Seconds
13 Seconds
The time line chart below illustrates how a series of short recorded messages might be
distributed in the memory:
MSG1
MSG2
MSG3
MSG4
MSG5
0
75
Total Time in Seconds
32
42
52
62
32
10
10
10
13
Slot Size in Seconds
The next chart illustrates a message recorded under
MSG1
that
exceeds its allotted 32 second
limit. Note that
MSG1
continues to record beyond the partition, purging the previous contents of
MSG2
. When called up,
all of MSG1 will play back without interruption
. However, when
MSG2
is called up, only that part of
MSG1
falling in the
MSG2
slot will play.
