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</o:shapelayout></xml><![endif]--></head><body lang=EN-GB link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Hi Bob, thanks for the suggestions. I actually have 2 wireless and one wired keyboard (+ 3 mice) in the shack, which (on my last PC) were all used on different bands! Been there. Tried them all – but none would allow 6 band problem free operation. I have ferrite beads on the wired keyboard. All the mice are wireless.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>I have got rid of the network cable (which did make a difference) and replaced it with wireless. This got rid of the problem on 10m!<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>The only wire going into the PC are the radio CAT/serial cables. These have ferrite on them.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>PTT and CW keys are all good. I can turn up the power and the problem starts at a specific power output fairly consistently. I have also bypassed all the antenna switching with a amp-direct-to-the-antenna cable, and it still occurred.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>I don’t want to take up any more reflector space with this, but if anyone else has any thoughts I’d really appreciate them – just send direct to me.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>I will be trying Frank’s opto-isolator idea.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>73<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Stewart<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>GM4AFF<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><b><span lang=EN-US style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span lang=EN-US style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> support-bounces@f5mzn.org [mailto:support-bounces@f5mzn.org] <b>On Behalf Of </b>Bob Wilson, N6TV<br><b>Sent:</b> 25 March 2014 20:59<br><b>To:</b> Win-Test Reflector<br><b>Subject:</b> Re: [WT-support] RFI and Wintest<o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p><div><p class=MsoNormal>Try a different keyboard, maybe a wireless keyboard and mouse, or put ferrite beads on all cables leading to the PC, as many turns as you can. Mix #31 works well.<o:p></o:p></p><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>Of course make sure it's really RFI and not a configuration error. Perhaps the PTT and CW pins are reversed. This will cause a key down carrier for the duration of the message.<o:p></o:p></p></div><div><p class=MsoNormal><br clear=all><o:p></o:p></p><div><p class=MsoNormal>73,<o:p></o:p></p><div><p class=MsoNormal>Bob, N6TV<o:p></o:p></p></div></div><p class=MsoNormal><o:p> </o:p></p><div><p class=MsoNormal>On Tue, Mar 25, 2014 at 1:53 PM, Stewart GM4AFF <<a href="mailto:stewart@gm4aff.net" target="_blank">stewart@gm4aff.net</a>> wrote:<o:p></o:p></p><div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>I am having some problems with RF getting into my PC and upsetting the WIntest keying. I can do what I like with the paddles when I run power, but as soon as I touch a WIntest function key to send CW it just locks everything up with a solid transmitted carrier. I was able to eliminate this on my last PC by grounding the case and using WiFi, but not on this PC. It’s only bad on 15 and 40m. The 15m antenna is quite near the shack and the 40m antenna has a bad SWR at the moment - so I know the cause.<o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Does anyone have advice on what can be done to prevent this – practical down-to-earth solutions (excuse the pun).<o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Thanks!<o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Stewart<o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='color:#888888'>GM4AFF<o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='color:#888888'> <o:p></o:p></span></p></div></div><p class=MsoNormal style='margin-bottom:12.0pt'><br>_______________________________________________<br>Support mailing list<br><a href="mailto:support@win-test.com">support@win-test.com</a><br><a href="http://lists.f5mzn.org/cgi-bin/mailman/listinfo/support" target="_blank">http://lists.f5mzn.org/cgi-bin/mailman/listinfo/support</a><o:p></o:p></p></div><p class=MsoNormal><o:p> </o:p></p></div></div></div></body></html>