MFJ CW-Elmer MFJ-419, Instruction Manual, Page: 12 / 24

MFJ-914 CW-Elmer
Version 0 12
ᓻ
2022 MFJ Enterprises, Inc.
Once connected, simply type text (alpha, numbers, and
punctuations) on the terminal SEND screen. The MFJ-419 CW-
Elmer will read the received text message and translate each
character to Morse code, sounded at the set WPM rate. The text
is also displayed in a scrolling mode on the LCD display, going
right to left, lower to upper line.
To send text files first the file format is a standard text format
normally ending in .TXT. Windows DOC, DOCX and other similar
formats or PDF formats will not print correctly. You can many
times copy these sort of files to text format and then send them.
To send a file use the SEND function in the terminal program
which sends straight text. Do not use a transfer method that uses
something like XMODEM or Kermit. These compress the files
and are not ASCII text. Follow the instructions for your terminal
program and select the text file to send then send it. The text
should start to send as it fills up the buffer.
Pressing the KEY button for about 1 second will pause the
sending and pressing the KEY button for 2 seconds will exit the
USB Sending mode to the MAIN MENU. The terminal will also
display the text that is displayed on the MFJ-419 screen.
WARNING: Serial connections using the USB port must be USB
levels only; DO NOT use RS232 level connections that operate
at positive and negative 7-10 volts, you could damage the MFJ-
419.
Cancel
Cancel returns you to the MAIN MENU.
EXERCISE MENU
The MFJ-419 CW
‐
ELMER employs the “Paris” timing scheme, where the
basic unit of time is the DIT, and a DAH is 3 DITs in length.
Intra
‐
character pauses (between DITs and DAHs) are 1 DIT long, pauses
between letters in a word are equal to 3 DITs, and a 7
‐
DIT pause marks
the end of each word. It’s called the “Paris” scheme because properly
keying the word “PARIS”, plus the end
‐
of
‐
word pause, is exactly 50 DITs
duration, and is a standard for determining WPM rates (the number of
times “PARIS “ can be keyed in one minute, or equivalent).
. DIT Time
_ DAH Time
The object of these exercises is to practice pressing the key for
as close to ideal DIT or DAH times as possible at the current