Vectronics CK-200 User Manual

CK-200 Instruction Manual Electronic CW Keyer

Introduction

The CK-200 Electronic CW Keyer is a microprocessor controlled keyer that provides iambic key operation and dot-and-dash memory to make sending perfect code easier. It has tunable code speed, code weight, and sidetone frequency; it supports both direct and grid-block keying outputs as well as relay contact output. You also get to choose between type A and type B iambic keying.

Control Functions

VECTRONICS

OFF

IAM BICTUNE

OFF

SPEED

MODEL CK-200

ELECTRO NIC KEYER

KEYING

RELAY

1234 5(LED)

Figure 1. CK-200 Front Panel.

1. The On/Off button turns the unit ON and OFF. The LED lig hts when the

unit is ON.

2. The Iambic button selects type A or type B iambic keying. When a

squeeze is released during an element (dot or dash), type B adds the opposite element. Type A just finishes the element in progress and does not produce a following alternate element. For example, in type A iambic, a squeeze release during the "dah" in the letter A will produce "di- dah" (A). In type B iambic, a squeeze release during the "dah" in the letter A will produce "di-dah-dit" (R).

3. The Tune button continuously keys the transmitter for tuning.

4. The Speed control varies the code speed. The speed range is configured

with an internal jumper (JMP1) for 5 to 65 WPM or 10 to 40 WPM. Turn the control clockwise to increase speed and counter-clockwise to decrease speed. The unit is factory set to 5 to 65 WPM with JMP1 at the "L" position. To make the speed adjustment less sensitive, change the speed range to the narrower range of 10 to 40 WPM. To change the speed range,

CK-200 Instruction Manual Electronic CW Keyer

remove the cover by removing the two screws (one on each side) that secure it. Locate jumper JMP1 behind the microprocessor and set it to the "H" position.

5. The Keying rotary switch selects output for negative (grid-block), positive

(direct), or relay contact output.

6. The Weight control varies the code weight from approximately 25% to

75%, with the standard dot defined as 50% weight. The standard dot-dashspace ratio is 1:3:1 (trimpot at mid-range). The unit is factory set to standard weight of 50%. To change the code weight, remove the cover by removing the two screws (one on each side) that secure it. Locate trimpot R27 next to jumper JMP1; turn it clockwise to increase dot and dash lengths and counter-clockwise to decrease dot and dash lengths.

FRONT

REAR

COVER SCREW (2)

VOLUME CONTROL PITCH CONTROL

Figure 2. CK-200 Right Side.

7. The Volume control adjusts the sidetone level of the internal speaker. This

control is located internally. When looking at t he unit's front panel, it is accessible through a small hole on the right side, closest to the front and may be adjusted by inserting a small flat-headed screwdriver. This control is turned clockwise to increase the volume and counter-clockwise to decrease the volume.

8. The Pitch control sets the desired sidetone pitch from approximately 300 to

1200 Hz. This control is also located internally. When looking at the unit's front panel, it is accessible through a small hole on the right side, closest to the rear and may be adjusted by inserting a small flat-headed screwdriver. This control is turned clockwise to raise the pitch and counter-clockwise to lower the pitch.

CK-200 Instruction Manual Electronic CW Keyer

Rear Panel

CK200 Electronic Keyer

OUTPUT

POSITIVE RELAY NEGATIVE KEYER PADDLE 9 VDC

12 3 4 5

VECTRONICS

AC ADAPTER

Figure 3. CK-200 Rear Panel.

1. Positive Keying O utput jack is a 3.5 mm stereo jack that accepts a stereo

or mono plug where the keying output is available only at the tip of the plug (the ring of the plug is not connected).

2. Relay Keying Output jack is a 3.5 mm stereo jack that accepts a stereo

plug where the tip and ring of the plug form output contact.

3. Negative Keying Output jack is a RCA phono jack where the keying

output is available at the center pin of the plug.

4. Keyer Paddle jack is a ¼ inch stereo jack where the tip is connected to the

dot level and the ring is connected to the dash level.

5. Power jack is a 2.1 mm coaxial jack with positive center and negative

sleeve that accepts 9 to 16 volts DC power supply. Use of this jack disconnects the internal 9-volt battery.

Installation

1. A 9-volt battery (not included) may be installed. Remove the cover by removing the two screws (one on each side) that secure it. A battery holder, located inside the enclosure, is provided for installing a 9-volt battery.

2. A 12 Vdc power supply may also be used to power the CK-200. A 2.1 mm coaxial plug with a positive center and a negative sleeve should be used to power this unit. The MFJ-1312B, an optional 12 volts adapter, is available from MFJ Enterprises, Inc. The battery is automatically disconnected when external power is used.

+ 5 hidden pages