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Table of Contents
Related Manuals for MFJ Memory Keyer MFJ-493
Summary of Contents for MFJ Memory Keyer MFJ-493
- Page 2 o 15.838 Class B computing device: Information to user. This equipment generates and uses radio frequency energy and if not installed and used properly, that is, in strict accordance with the manufacturer's instructions, may cause inter- ference to radio and television reception. It has been type tested and found to comply with the limits for a Class B computing device in accordance with the specifications in sub- part J of Part 15 of FCC Rules, which are designed to provide reasonable protection against such interference in a residential Installation.
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Page 3: Table Of Contents
Configuration File Format ..........17 Command Mode Quick Reference ........18 Keyboard Character to Morse Code Table ....... 19 CW Abbreviations ............20 Meaning of Q Signals ........... 20 MFJ-493 Parts List ............21 MFJ-493 Schematic ............23 ADDENDUM ..............24... -
Page 4: Specifications
Add an optional keyboard to make the MFJ-493 a keyboard keyer. Keyer Terminal: Plug your Computer into the MFJ-493's serial port to talk to the keyer. Upload files to memory, change the keyer configuration, or use the online manual for easy Oper- ation. -
Page 5: Connections
IBM-PC compatible you can order a cable from MFJ for $12.95. Order MFJ-5409 for connection to a 9 pin serial port or MFJ-5425 for connection to a 25 pin serial port. Your computer will need a ter- minal program to talk to the keyer. Set your terminal program to 1200 baud, 8 data bits, no parity... -
Page 6: Basic Operation
PWR controls power to the unit. After turning the unit on, the keyer will light the front panel LEDs sequentially and send the characters "ON" in Morse Code using the sidetone speaker. This tells you the MFJ-493 is ready for operation. Start sending with a paddle or keyboard. Adjust the volume and speed to your preference. If the speed is still too fast or too slow, adjust the range of the speed knob using the Speed Set feature. -
Page 7: Menu Operation
MFJ-493 Instruction Manual Menu Operation The MFJ-493 menu system consists of a button marked MENU, six menu buttons marked F1 - F6, and four menu LEDs marked A-D. Pressing the MENU button changes the menu level. The keyer will sound a key click and light the Menu LED of the new level. The row of boxes beside that LED now contains the functions of buttons F1 - F6. -
Page 8: Keyboard Operation
When you plug in a standard IBM style AT keyboard, your keyer becomes a powerful keyboard keyer. The MFJ-493 uses the alphanumeric keys (A - Z 0 - 9), the function keys (F1 - F12) the space bar, the arrow keys, and the punctuation characters that have Morse equivalents. Prosigns have been assigned to some of the other punctuation characters for quick operation. -
Page 9: Keyer Terminal Operation
(see the section on connections) turn on your computer and load your terminal program. Set the baud rate to 1200 and set data bits to 8, parity to none, and stop bits to 1. Now turn on your MFJ- 493. You should see a sign on message. A correct sign on message will show that everything is working properly between the computer and keyer. -
Page 10: Menu A
MFJ-493 Instruction Manual Menu A Message Memory To play or save to a message memory, select Menu A. Press F6 (Bank Select] to select the correct bank: 1 - 4 Red, 5 - 8 Green. To play a message press and release the correct message button. -
Page 11: Embedded Commands
MFJ-493 Instruction Manual Embedded Commands While saving messages you may use embedded commands for special features. To use an em- bedded command simply store the two character, embedded command within your message. Inserts a serial number into a message. All nines are sent as "N" and zeros are sent as "T". -
Page 12: Serial Number Decrement
MFJ-493 Instruction Manual Serial Number Decrement Use Serial Number Decrement to decrement the current serial number by one. The unit will echo a "D" for every number that is decremented. If you decrement down from zero you will get 9999 for your serial number. -
Page 13: Command Mode Commands
The default is set 01 [A - F]. Toggling R1 will send random word length. In word rec- ognition mode, R8, the MFJ-493 sends common words heard on the air. Enable either 5 character word length or random (1-8 character) word length. -
Page 14: Speed Set
MFJ-493 Instruction Manual Speed Set (SP) Use Speed Set (WPM) mode to change the speed of code. An alternating dot/dash is produced and the speed is modified by using the paddles, keyboard or keyer terminal. Paddle Press either the dot or dash paddle to increase or decrease speed. Squeeze paddles to exit. -
Page 15: Output Tune
MFJ-493 Instruction Manual Output Tune (TU) Use Output Tune to tune up your station. A constant key is sent to allow tuning of your tuner or antenna. Paddle Squeeze the paddles to exit. Keyboard Press F11 to enable the output tune. Press Esc to exit. -
Page 16: Menu C
MFJ-493 Instruction Manual Menu C Semi-Auto On/Off (SA) Use Semi-auto On/Off to toggle between semi-auto (bug) mode on and off. The keyer responds with the current mode "ON" or "OFF". Semi-auto mode creates automatic dots but requires dashes to be hand keyed. Note: Semi-Auto mode may not be used to enter messages, serial numbers or in command mode. -
Page 17: Menu D
MFJ-493 Instruction Manual Menu D Serial No. Store (SN) Use Serial Number Store to set the current serial number. You must enter four numbers in Morse code for a valid serial number. All numbers may not be in shorthand. For example, the number "1"... -
Page 18: Typical Settings For A Contest
MFJ-493 Instruction Manual Typical Settings for a Contest This is an example of some typical settings for a contest. Each contest has different rules for ex- changes etc. and you may have a different method of contesting. This is an example of one con- tester's settings. -
Page 19: Practicing With The Fcc Exam Simulator
Teaching Code Those that give practice sessions will find the MFJ-493 of great help. Practice sessions can be writ- ten and edited, up to 4000 characters for a single memory, in a text editor and send it as ASCII to one of the message memories. -
Page 20: Configuration File Format
MFJ-493 Instruction Manual Configuration File Format {sconfig: ##, ##, ####, #, #, #, #, #, #, #, ##, ##, ##, ####, #, #, #, #, #, #, #, ##, #} NOTE: Do not insert spaces into a configuration file. The spaces in the above example are for readability. -
Page 21: Command Mode Quick Reference
MFJ-493 Instruction Manual Command Mode Quick Reference COMMAND DESCRIPTION TOGGLES BREAK-IN MODE ON/OFF # = 0 - 9 SELECTS CHARACTER BREAK LENGTH # = 1 - 8 ENABLES EDIT MODE TOGGLES FARNSWORTH MODE ON/OFF ENABLES FCC SIMULATOR MODE ENABLES HAND KEY (STRAIGHT KEY) MODE... -
Page 22: Keyboard Character To Morse Code Table
MFJ-493 Instruction Manual Keyboard Character to Morse Code Table Keyboard Morse Keyboard Morse ·– ····· –··· –···· –·–· ––··· –·· –––·· · ––––· ··–· ––––– ––· ·–·–·– ···· ––··–– ·· –·–·–· ·––– –––··· –·– ‘ ·––––· ·–·· “ ·–··–· ––... -
Page 23: Cw Abbreviations
MFJ-493 Instruction Manual CW Abbreviations best regards message love and kisses number about again old man antenna operator break are, received, roger copy RCVR receiver general call to any station equipment see you later readability, strength, tone report see you... -
Page 24: Mfj-493 Parts List
MFJ-493 Instruction Manual MFJ-493 Parts List Part Designator Description Resistor, Network, SIP, Common, 9 Elements, 10 kOhm R2, R12 Resistor, 1/4 Watt, 5 %, Film, 100 kOhm R3, R17 Resistor, 1/4 Watt, 5 %, Film, 1 kOhm Resistor, Pot, PCS, Linear Taper, 1 kOhm... - Page 25 MFJ-493 Instruction Manual IC, CPU, 40, 8-Bit, INTEL, P80C32-1 U2, U11 IC, HCT 20, Tri-State Octal Latch, 74HCT373 IC, EPROM, 28 Pin, 256K, 21V, CMOS, 27C256 Voltage Regulator, TO-220, +5 Volts, 7805T IC, RAM, 28 Pin, 32k × 8, 150 nS, 43256-15L...
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Page 26: Mfj-493 Schematic
MFJ-493 Instruction Manual MFJ-493 Schematic... -
Page 27: Addendum
HELP INDEX FOR MFJ-493 MEMORY KEYER TYPE [help-program] FOR HELP ON PROGRAMMING MESSAGES TYPE [help-transmit] FOR HELP ON SENDING MESSAGES TYPE [help-setup] FOR HELP ON CONFIGURING YOUR MFJ-493 TYPE [help-list] FOR LIST OF ALL COMMANDS [help-list] HELP-LIST INDEX FOR MFJ-493 MEMORY KEYER... - Page 28 MFJ-493 Instruction Manual Nits A couple features that are completely useless are the "hand key" mode and the "semi-automatic- mode". Once the hand-key mode is enabled you can use either paddle as a straight key but it is very unresponsive at anything over 5 - 10 wpm. So keep your straight key wired into the output of this keyer.
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