Mfj-493 manual


















A built-in serial port also allows you to connect the keyer to a computer's serial port via an optional cable, to use the latter for the computer composition of a message library, generate exam sessions, control the keyer totally, set the keyer for different operators during a contest, view, edit and save memories related to messages and settings.

By transmitting in CW the data are sent in ASCII to the serial port, thus allowing the storage of an entire transmission on the computer. All the commands, the functions and memories can be set from this keyboard. You will also have memories and other additional features available. External 12 V power supply. Mobile view. HardSoft Products. It's just a lot of fun to play around with and copy. 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 wpm. So keep your straight key wired into the output of this keyer. Well it's even worse than the hand-key mode, don't bother as it's for entertainment purposes only.

Another problem with this keyer is related to the weighting commands 'C' and 'W'. If you have either of them set to a value other than zero you cannot accurately record a message into memory using the paddles. I'd hoped to be able to run both my paddle and bug into the input of this keyer and switch it to hand mode when I wanted to use the bug and use it as a bug "de-scratcher" but it doesn't buffer the bug input and in hand key mode misses about a third of the DITS sent by a bug so no joy there.

I'll just keep using my old Ham-Keyer as my bug de-scratcher. Adding this additional keyer finally made me break down and build a connection box for all my keys and rigs. I have CW keys on my desk at any given time and radios.

Each of the two external keyers have female RCA jacks for output. To top it off, each of my primary 3 radios expect different wiring from an external keyer.

I still can't leave the KX3 key plugged in when not in use because when that radio is turned off it presents a high impedance on the plug and makes the C21 think the key is down 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.

Upload files to memory, change the keyer configuration, or use the online manual for easy Oper- ation. Your computer will need a ter- minal program to talk to the keyer. Set your terminal program to baud, 8 data bits, no parity 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 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. 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 MFJ 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 and set data bits to 8, parity to none, and stop bits to 1. MFJ new VirtualAntenna Memory system gives you 4 antenna memory banks for each of 2 antenna connectors.

Select up to 4 antennas on each antenna connector. Each antenna has memories, 20, total. If so, tuning is instant-aneous and you're ready to operate.

It measures the complex impedance of your antenna. Next, it calculates the components it needs and instantly snaps them in.



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