AAØZZ EZKeyer

Pushbuttons 1, 2 and 3 are used to send user messages 1, 2 and 3.

Pushbutton 1 is also used to send commands to the keyer. If it is pressed and released quickly it sends Message 1. If it is pressed and held for about 2 seconds before releasing, the keyer responds with an "R", and goes into command mode. The user now enters one of these commands:

"A" - Sidetone enable. Toggles the keyer's sidetone ON or OFF. Default is ON. Keyer response is "R" in either case.

"I" - Iambic mode toggle. Toggle between Iambic-A and Iambic-B mode. Default is "Iambic-A". Keyer response is "A" or "B" for Iambic-A or Iambic-B.

"K" - Keyer/Straight-key toggle. Toggles between "Keyer" mode and "Straight Key/Cootie" mode. Straight key mode can use either the DIT or DAH paddle. Response is "R" in either case.

"S" - Set CW speed (between 5 and 55 WPM). Keyer response is a DIT, requesting the first digit, followed by another DIT requesting the second digit. A "T" may be entered instead of a zero. Response is a "?" if the input is invalid. Default is 15 WPM. In addition, the speed can be adjusted quickly by pressing and holding the command pushbutton (PB1) and then tapping the left (usually DIT) paddle or the right (usually DAH) paddle. Each time the left paddle is tapped the speed is increased by 2 WPM. Each time the right paddle is tapped the speed is decreased by 2 WPM. The keyer responds with a DIT after each tap. (If PB1 is held forlonger than about 2 seconds before the paddle is tapped, the keyer will go into command mode.)

"T" - Tune. Keys the output continuously - until the user taps one of the paddles.

"U" - Autospace Mode Toggle*. Default is ON. Response is "A" when turned ON, "N" when turned OFF.

"X" - Swap Paddles. The DIT and DAH paddles are reversed.

"W" - Report Morse speed. The keyer reports the current speed.

"M" - Receiver Mute Mode Toggle**. Response is "M" when toggled ON and "O" when toggled OFF.

"1" Load User Message 1. The user enters characters for message 1, one character at a time. Keyer sends a DIT, requesting a character. After the character is entered and validated, the keyer responds with another DIT requesting the next character, etc. If the user wants a space he just waits for about 2 seconds and it gives another DIT, indicating the space was saved in the message. User ends the message input by entering a period. Maximum message size is 31 characters. Response is "R" at end-of-message.

"2" Load User Message 2 Same as "1".

"3" Load User Message 3 Same as "1"

* Autospace Mode - An aid for sending good CW. When enabled you cannot send CW with two dit spaces between any two CW elements. If you try to send two spaces it will automatically add one more, making it a letter-space instead of spacing within a letter. It's hard to hear unless you slow way down and try it.

** Receiver Mute Mode - When ON, the receiver mute circuitry becomes operational. Then, when the paddle is closed (either DIT or DAH) the RX Mute output is activated, "shorting" the jack output to ground. 7 ms later the transmitter output jack is keyed, "shorting" its output to ground. After the appropriate "Dit Time" or "Dah Time" for the current CW speed, the transmitter is un-keyed and 7 ms later the receiver mute is un-keyed. Note that the leading 7 mS is taken away from the DIT/DAH "ON" time and the trailing 7 mS is taken from the inter-element "OFF" time. The overall speed is constant, whether or not this feature is ON.