Specifications
Battery: 9 volt alkaline
CW speed: Approximately 5-45 WPM
Memories: 4, approximately 110 Morse characters each
Output keying: Positive Keying only, RCA phono jack output
Paddle input: 1/8’ (3.5mm) stereo jack input
Set UP
1)
Wire up your paddle with shielded cable with two conductors. The
XT-4 uses a 1/8” stereo plug. The shield wire is ground. The tip of
the connector is for the dit key and the center ring is for the dah
key.
2)
Wire up a cable to the CW input of your transmitter. Use shielded
cable with an RCA phono type connector for the XT-4 end and a
connector compatible with your transmitter on the other end.
3)
Install a standard 9V alkaline battery in the battery compartment.
Note: The XT-4 is designed to work with solid state positive keyed radi-
os only! Damage can occur to the XT-4 and/or your transmitter if it is
used improperly!
If you are unsure of your transmitter type, plug the CW cable into the
transmitter but leave the other end free. Measure the voltage across the
other end of the cable. Ground is the outer shell, and the inner pin is
positive. The voltage should m5V to +12V. If the voltage is neg-
ative, or is more than 24V, do not use the XT-4 keyer with your radio.
ON/OFF/Speed Control
The speed control knob is a combined ON/OFF switch and speed control.
Turn the knob fully counter-clockwise to turn the unit off when not in
use. This will preserve battery life.
Turning the knob clockwise will increase the CW sending speed. The
speed ranges from about 5 WPM to 45 WPM.
The XT-4 has a special power save mode to conserve battery power if
you forget to turn the power off. After about 30 minutes of inactivity,
the XT-4 goes into power save. The LED will briefly flash every 6 seconds
to remind you to turn it off. Pressing any button or the paddle will bring
the XT-4 back to normal operation.
REC and MESSAGE 1-4 Buttons
Pressing Message Buttons 1-4 will play back the corresponding pre-
recorded message. The message will be played until it is complete. Press-
ing either the DIT or DAH key paddles will cancel the rest of the recorded
message.
To record a message:
1)
Press the REC button. The LED will blink rapidly.
2)
Press the MESSAGE Button (1, 2, 3, or 4) that you wish to record. The
LED will come on without blinking.
3)
Start sending the message you wish to record with the paddle. The XT
-4 will not begin recording until the first dit or dah is sent.
4)
Press the REC Button to stop recording. The LED will go out. Press the
REC board as soon as possible after you finish sending the message.
This will minimize recording dead time at the end of your message.
Message Recording Notes:
1)
The message will be preserved even if you turn off the power.
2)
If you accidentally press the REC button and don’t want to record a
message, tap the DIT or DAH paddles
before
pressing a MESSAGE
BUTTON. This will cancel the record, and the LED will go out.
3)
Each message buffer will hold approximately 100-110 Morse charac-
ters. You can combine messages 1-2 or 3-4 together. Simply start
recording message 1 or 3, and it will continue into the next message
buffer if it is too long to fit in the first buffer.
Paddle Reverse
You should wire up your paddle so that the dit and dah keys operate the
way you are used to. You can temporarily reverse the paddle keys for oth-
er operators with the following procedure.
1) Turn off the power.
2) Press and hold down the message 1 key.
3) Turn the power back on.
4) The paddle keys will be reversed as long as power is applied.
