MFJ-432 Voice Memory Keyer
4
Message Memories
The message space is a continuous block of audio memory. This large block is divided
into 4 message memories. Memory 1 starts at 0 seconds. Memory 2 starts at 8 seconds.
Memory 3 starts at 12 seconds. Memory 4 starts at 16 seconds. Each section of memory
can only contain 1 messages' audio. Messages of 8, 4, 4, and 4 seconds long will
optimize usage of available memory.
Message 1 may be as long as 20 seconds, but because only one message can be in a
memory block, the other messages would contain portions of message 1 if this message
was longer than 8 seconds. If message 4 is recorded longer than 4 seconds, all audio over
4 seconds will be lost.
Suppose a message is saved in message 1 for 11 seconds. Message 2 starts at the 8
second point so it contains a 3-second part of message 1. Message 2 will be unusable
unless the audio saved after 8 seconds is an independent message.
If message 2 is re-recorded, it would write over the portion of message 1 in message 2's
memory area. This new message would also write over the end flag for message 1.
Message 1 would then play for 8 seconds and then play all of message 2. See the diagram
below.
Looping
Message 1 is the only message that will repeat. The length of the pause between loops in
message 1 may be adjusted using the trimpot accessed through the hole labeled REPEAT
DELAY on the back panel. A small slotted screwdriver can be used to adjust the trimpot.
