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NUE- USB Card Manual, ver 1.34 

Copyright 2009, Midnight Design Solutions, LLC 

 

I.  OVERVIEW

 

  

Do you need a way to save the text from your digital mode QSO for archival or hard copy printing?  Or 
perhaps need an official printed record of "Health & Welfare" radiograms handled at a disaster site?  If so, 
this USB card option will allow you to do just that ... and more!

 

  

In a nutshell, the USB add-on card makes your NUE-PSK Digital Modem more flexible and useful with its 
ability to record QSO receive and transmit text to a USB flash memory stick for archival and remote 
printing.  The USB card also provides a serial connection to a PC and (later) a real-time clock/calendar 
function for timestamping QSOs. The updated modem software contains the new keyboard commands 
for controlling the USB card functions, plus a wonderfully-revamped and consistent set of text editing 
commands.

 

  

The USB card fits into the existing modem enclosure with minimal modifications. The card occupies the 
battery compartment, since most users let us know that they would gladly sacrifice the use of internal 
batteries for this USB capability.  (Battery operation of the modem is also a cool feature and it can indeed 
run up to 8 hours on a pair of 9V batteries, but we found that most people use the modem with an 
external source that also powers the transceiver.) 
 

 

NUE-PSK Digital Modem with USB Card installed (on left side of modem board) 

 

 

 

 

NUE-PSK modem with the USB ports accessible on the left side of the enclosure

Summary of Contents for NUE-USB Card

Page 1: ...rd the receive and transmit QSO text to a removable USB flash memory device thumb drive for archival and remote printing The USB Card also provides a serial connection to a PC a means to upgrade modem...

Page 2: ...nical Description 4 III Assembling the USB Card from a kit 5 IV Programming the USB Card 6 V Installing the USB Card 7 VI Using the USB Card 8 REC Mode 8 Flash Bootload 9 PC Bootload 10 VII Technical...

Page 3: ...time clock calendar function for timestamping QSOs The updated modem software contains the new keyboard commands for controlling the USB card functions plus a wonderfully revamped and consistent set...

Page 4: ...same raw Rx and Tx QSO data as seen on the LCD Software support not yet available popular printer protocols will come in later software releases after initial deployment of the USB card 5 Built in Re...

Page 5: ...s and components are not provided in the initial NUE USB cards being sold We did not have time to complete this lesser important product capability so we put the framework in place with hopes that som...

Page 6: ...is is the signal to the U1 bootloader that a new file is coming to it When you run the VPROG program e g just double click the filename from your Windows Explorer window a small window will appear wit...

Page 7: ...in 1 is closest to the outside edge of the USB pcb and this signal goes to pad a on the modem board via the black wire shown below P3 pin 2 goes to pad c on the modem board via the white wire shown be...

Page 8: ...flash device Type Ctrl U again to stop the REC mode and you will see the USB port LED stop blinking and remain on continuously Remove the USB device and plug it into your computer You will notice a ne...

Page 9: ...Turn the dial one notch to see Start Bootload displayed 4 Ensuring that your thumb drive is inserted TAP the Select pushbutton and in about 15 seconds your modem will reboot and start up the software...

Page 10: ...for the driver at the location you have the temporary folder When the PC indicates that the device is successfully installed you can use the PC Bootload feature NOTE If you need help with this process...

Page 11: ...NUE USB Card Manual ver 1 34 11 Copyright 2009 Midnight Design Solutions LLC APPENDIX A Schematic...

Page 12: ...RC R9 1 Resistor SMD 1206 10K ohms Digi Key 311 10KACT ND R7 1 Resistor SMD 1206 180 ohms Digi Key 311 280ACT ND R25 R26 2 Resistor SMD 1206 330 ohms Digi Key 311 330ACT ND P2 1 USB connector Type A...

Page 13: ...NUE USB Card Manual ver 1 34 13 Copyright 2009 Midnight Design Solutions LLC APPENDIX C Chassis Hole Templates...

Page 14: ...occasionally experiencing some unusual behavior with the USB card you could benefit from making these changes They are easy to do and will ensure that you have the best hardware for successful use Usi...

Page 15: ...NUE USB Card Manual ver 1 33c 15 Copyright 2008 Midnight Design Solutions LLC...

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