6
OPERATING INSTRUCTIONS
General
The AEA Keyer Model CK-2 has been designed for the serious CW operator. It features a versatile
memory load and edit capability, automatic serial number, rapid CW speed changes and full weight-
ing control.
Keyer Operation
1.
Speed Change and Set
Two methods of CW speed control are available, variable and preset.
Preset Speed
Two presentable speeds may be stored and quickly recalled. To store speed "A", press
[#][#][8][N][N], when N N is the two digit speed in WPM desired. Similarly, for storing speed "B",
press [
*
][
*
][9][N][N].
The keyer will be set to the last speed entered.
When the keyer is turned on, speeds "A" and "B" are initialized to 20 and 30 WPM respectively.
To recall speed "A", press [
*
][8] and to recall speed "B", press [
*
][9].
Example: To store 5 and 15 wpm in speeds "A" and "B":
Press [
*
][
*
][8][0][5],
[
*
][
*
][9][1][5].
Now, to change from 15 wpm to 5 wpm, press [
*
][8]. To change back to 15, press [
*
][9].
Variable Speed Adjustment
A "variable" speed setting is also available. To increase speed, press [
*
][6] and hold the '6' until
the desired speed is reached. The keyer will send alternating dots and dash during the change.
To reduce speed, press [
*
][7] and hold the '7'.
2.
Sidetone Change
The sidetone is set to 500 Hz when the keyer is turned on. To increase the pitch press [
*
][1] and
hold the '1' key until the desired tone is reached. The tone may be lowered by pressing [
*
] twice
and holding the '1', i.e. [
*
][
*
][1].
The pitch of the tone when the '1' key is released will be the pitch of the CW sidetone. The pitch
of the keypad feedback tone will be lower.
3.
Automatic or semi-automatic (bug) operation
When the keyer is turned on, it is set for automatic, iambic operation. The keyer may be oper-
ated in the semi-automatic mode by pressing [
*
][
*
][6]. The keyer will now behave as a "bug". To
return to full automatic operation, press [
*
][
*
][7].
4.
Dot-Space, Dash-Space Ratios (Weighting)
"Perfect" Morse code is formed with the length of a dot equal to the intracharacter space length
(a dot-space ratio of 1.0) and the the length equal to three space times (a dash-space ratio of
3.0).
The dot-space ratio is adjustable from 0.5 to 1.5 and is set to 1.0 on turn-on. To change the dot-
space ratio, press [
*
][2] and enter the dot ratio using the pound key [#] as a decimal.
Example: To enter a dot-space ratio of 0.7 press [
*
][2][0][#][7] or [
*
][2][
*
][7].
To enter a dot-space ratio of 1.3 press [
*
][2][1][#][3].
