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KEYING TRANSISTORIZED TRANSCEIVERS
Some transistorized transceivers such as the ICOM 701 and the Ten-Tec line require a slight modi-
fication of the AEA keyer. With this modification a reed relay is not required for proper keying.
if the CK-1 does not key your transceiver, check your transceivers key input polarity with respect to
chassis ground. If positive, modify the unit as follows:
A. Remove the keyer from case and locate the diode closest to the speaker (D4).
B. Solder a jumper across this diode.
C. Reassemble the keyer
IMPORTANT!
If the keyer is to be used with a transceiver or transmitter with negative keying polarity, such as a
vacuum tube transmitter with grid blocked keying, it is necessary to remove this jumper.
I. General
The AEA keyer Model CK-1 has been designed for the serious CW operator. It features a versatile
memory load and edit capability, automatic serial number, rapid CW speed changes an full weigh-
ting control.
II. Keyer
Speed Change and Set
1.
set.
Preset Speed
Two presentable speeds may be stored and quickly recalled. To store speed "A", press
, when N N is the two digit speed in wpm desired. Similarly, for storing speed "B",
press
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
Example: To store 5 and 15 wpm in speeds "A" and "B":
Press
Now, to change from 15 wpm to 5 wpm, press
Variable Speed Adjustment
A "variable" speed setting is also available. To increase speed, press
the desired speed is reached. The keyer will send alternating dots and dash during the change.
To reduce speed, press
CK-1 WIRING INSTRUCTIONS
. Two methods of CW speed control are available, variable and pre-
.
and to recall speed "B", press
,
.
and hold the 7.
OPERATION
. To change back to 15, press
1
.
.
and hold the 6 until
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