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WinKeyer 3 Serial Assembly Manual For PC board version R01 K1EL Systems www.k1el.com March 10, 2021...
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Introduction This document describes the assembly, checkout, and hook up of the K1EL WinKeyer3 Serial Kit with a version R01 PCB. This keyer is powered directly off the PC’s serial port and does not require an external power source. Current draw is minimal, a low dropout, low quiescent current 3.3V voltage regulator helps in this regard.
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8) Install the keying indicator LED. There is a flat on the body of the LED that must align with the flat on the silkscreen. 9) Install and solder the 14 pin socket, so that top notch matches the silkscreen. 10) Install the transistors and voltage regulator VR1, making sure the flat side of the component body lines up with the silkscreen, as shown in the picture.
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Assembly Pictures Figure 1 – Assembled WK3 Serial Figure 2 – Component Close Up, Left Half WK3 Serial Assembly Guide Version R01 – 3/10/2021 Page 4...
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Figure 3 – Component Close Up, Right Half WK3 Serial PCB Wiring Here is a handy table of all PCB connections: Pad Label Wire Connection Right Paddle Left Paddle Paddle and Speed Pot Grounds Speed Pot Wiper (10K Linear Taper) Open collector PTT output (50 VDC max) Open collector keying output (50 VDC max) Keying Ground...
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Speed Pot Hookup Here is a simplified schematic showing the speed pot hookup: Figure 4 – Speed pot Connection Iambic Paddle Cable Wiring The builder must decide the best way to connect a set of paddles to WK3serial. We recommended that an external connector be used to allow the paddleset to be disconnected easily.
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RS232 Interface Cable WK3 Serial should be connected via a straight through cable (not null modem). The cable will need a male DB9 plug at one end (WK3 Serial end) and a female DB9 at the other. This assumes that a DB9 male is at the PC end. If you make up your own cable, note that WiK3 Serial uses both DTR and RTS to derive power, so these lines must be connected in addition to the normal TxD, RxD and Ground.
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Let’s Test WinKeyer3 Serial The best application to use to check out the WK3 Serial kit is K1EL’s WKtest which can be downloaded from the software area of the k1el website. It is not an actively supported application but it is the only one that has a debug mode that allows you to turn the RS232 DTR and RTS lines on so you can statically test voltages on the board.
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After installing the appropriate USB driver for the adapter, you will need to use either K1EL's WKscan app or Device Manager to determine the USB comport that Windows assigned to the USB to Serial adapter.
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5) Click Paddle and Serial echo on and type in the Keyboard Entry Window. As you type, the LED will light as Morse is sent and that text will be echoed in the Outgoing Morse Window. The next item to test is the paddle interface. Now connect a paddle and try that out, You won't hear anything since there isn't a sidetone speaker but you will see the test LED light.
Transmit Keying Cable Wiring Most amateur transceivers use a stereo ¼ inch phone jack as a keying input connector. The universal keying plug pin out is shown in Fig. 9. WK's Key output (K) would be connected to the plug's tip and WK's ground (G) to plug's ground. To be compatible with all radios, please leave the Ring unconnected.
In case of difficulties There are two possible errors that will be displayed if OpenWK fails: WK Fail: comm open not open means that WKtest was not able to open the selected com port. Double check to be sure you entered the correct number. WK Fail: no echo means that WKtest was able to acess the selected com port but was not able to find a WK3serial connected to it.
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Figure 6 - WK3 Serial Schematic WK3 Serial Assembly Guide Version R01 – 3/10/2021 Page 13...
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What’s Next? Now it’s time to make a more permanent installation. The following diagrams illustrate Winkeyer3 Serial installed in a generic enclosure of your own choosing: Figure 10 - Winkeyer3 Serial in an Enclosure Sidetone Connection Although most users will want to use their rig’s sidetone, it is possible to obtain a sidetone output from the WK PCB.
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WKUSB is not used as intended, WKUSB is connected incorrectly, Safety guidelines outlined in this document are not followed, or WKUSB is modified in any way. K1EL cannot be held responsible in these or other similar events. WK3 Serial Assembly Guide Version R01 – 3/10/2021...
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