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WinKeyer 3

Serial

Assembly Manual

For PC board version R01

K1EL Systems

www.k1el.com

March 10, 2021

Summary of Contents for WinKeyer 3 Serial

Page 1: ...WinKeyer 3 Serial Assembly Manual For PC board version R01 K1EL Systems www k1el com March 10 2021 ...

Page 2: ... uF ceramic disc capacitor 102 __ C6 0047uF dipped ceramic capacitor 472 blue __ J1 DB9 9 pin female D connector __ S1 14 pin DIP socket Kit Assembly 1 Verify and check off components against the bill of materials listed above If there are any parts missing notify K1EL by email and we will send them to you 2 The WK3 Serial PCB does have a solder mask but it is quite easy to inadvertently bridge tw...

Page 3: ...e longer lead is positive and goes in the square hole silkscreen Solder trim 14 Next install the DB9 connector being careful not to bend any of the leads and solder Make sure to solder the ground lugs it will take some extra time and solder 15 Now wire up the speed pot Only two lugs are connected one to ground G and the center lug to the S pad Looking at the pot from the back the lug clockwise fro...

Page 4: ...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 ...

Page 5: ...lector PTT output 50 VDC max K Open collector keying output 50 VDC max G Keying Ground B Optional Battery Connection Gnd Battery Ground Connection Table 1 WK3 Serial PCB Connection List A battery interface is provided for those that want to run WK3 serial in a limited standalone mode This would be with a paddle and speed pot only with no means to enter commands or trigger messages WK3 Serial Assem...

Page 6: ...external connector be used to allow the paddleset to be disconnected easily Usually this connector is an 1 8 phone jack but 1 4 versions are common as well Fig 5 illustrates the most common way paddleset plugs are wired The mating jack on WK3serial should be wired to work with this convention Figure 5 Paddle Connector Pinout Note that paddle connectors are not included in the kit WK3 Serial Assemb...

Page 7: ...This voltage is connected to a 3 3 volt regulator VR1 that powers the WinKeyer3 controller IC It also provides the positive bias for the plus swing of RS232 transmit back to the PC The negative supply comes from the RS232 signal RTS on pin 7 of the DB9 This supply is used only to provide negative swing on RS232 transmit Transistor Q4 diode D3 and resistor R3 level convert the incoming bipolar RS23...

Page 8: ...you can move on to WK3demo for further testing or a full featured logging or contest app like N1MM HRD N3FJP Fldigi WinTest or countless others Here is a link to the setup file for WKtest https k1el com WKTESTX html Here is a link to the setup file for WK3demo https www k1elsystems com WK3demo html We don t recommend using WK3tools since it is a WKUSB standalone mode editor and WK3serial does not ...

Page 9: ...rmine the USB comport that Windows assigned to the USB to Serial adapter After figuring the comport issues out install the WKtest application and Start it up Figure 7 WKtest Dialog Box after startup 1 Click on the Comm pull down and select the com port from the list 2 Click OpenWK to connect WKtest to the WK3 serial keyer It will report WK2 F W revision 3 3 Now click Tune and the LED on WK3serial ...

Page 10: ...se 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 If you encountered problems go to the troubleshooting section on page 12 Figure 8 WKtest Dialog Box after a successful open WK3 Serial Assembly Guide Version R01 3 10 2021 Page 10 ...

Page 11: ...keying positive voltages up to 50 VDC and is not compatible with transmitters that use negative or higher than 50 V keying voltages RFI Immunity There are several RF filter points included in the WK3 Serial circuit design Caps C7 and C8 on the Key and PTT lines bypass RF coming in through the keying leads C4 and C1 bypass RF arriving over the paddle leads to ground C7 attenuates RF arriving over t...

Page 12: ...n the port interface and you can use a voltmeter to see if the voltage regulator is working You should be able to measure 3 3 volts between pin 1 and 14 on the WinKeyer3 IC If 3 3V is not present carefully check the voltage supply circuitry for a problem If you have 3 3 volts on the Winkeyer3 IC you need to figure out why the PC can t talk to it A good strategy at this point is to carefully go ove...

Page 13: ...Figure 6 WK3 Serial Schematic WK3 Serial Assembly Guide Version R01 3 10 2021 Page 13 ...

Page 14: ...g s sidetone it is possible to obtain a sidetone output from the WK PCB The keying LED is connected to the sidetone output pin If you remove the LED you can connect those pins to a high impedance mini speaker 600 Ω Note that Winkeyer3 is powered from the PC s serial port and would not have enough drive capability to run a full size 8 ohm external speaker In this event feed the sidetone output thro...

Page 15: ...Please submit support questions by e mail to k1el kitsinfo gmail com While every effort has been made to insure that the WKUSB design is safe and the documentation is clear and accurate it is still possible to cause equipment damage or incur personal injury if WKUSB is not used as intended WKUSB is connected incorrectly Safety guidelines outlined in this document are not followed or WKUSB is modif...

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