When this happened to me before I solved the problem I think all I had to do was restart Allstar/Asterisk - /usr/local/sbin/astres.sh I don't remember removing/reinstalling the DMK. In fact when I did that I don't think it solved the problem. You are implying that you think this is directly related to 75/40 meter operation??? If so proceed with RFI prevention! 73 Doug WA3DSP http://www.crompton.com/hamradio Date: Mon, 10 Feb 2014 12:03:20 -0600 From: ars.w5omr@gmail.com To: app_rpt-users@ohnosec.org Subject: Re: [App_rpt-users] Loosing TX On 02/10/2014 08:34 PM, Doug Crompton wrote: Another thing to consider on the DMK is RFI. They are very susceptible to it especially higher power HF but be aware that any RF could cause problems. I have had this happen at two different locations. The fix was ferrites on the leads in and out. One on each lead worked for me but more may be necessary depending on the severity. You can also wrap multiple turns through a single ferrite if they fit. This shows up a a locked interface and usb error messages that in my case specifically said EMI? It might not always catch that it is an EMI problem though so other errors might indicate the same thing. Since the DMK is nothing more than a fancy USB sound FOB I suspect any FOB might have this problem. Lead length both audio and USB would also be a factor. Agreed. I am curious, though, what voltage is sent back to the USB buss from the device. My reasoning is, that in -my- case, when this happened, I noticed that if I pulled the USB cord, let it set for 15 or 20 seconds, then plugged it back in, the green light lit up, and as soon as it Transmitted, that URI died, again. Shutting down the machine, to the point of letting the caps discharge, etc, then bringing everything back up, plugged in, all worked flawlessly... until, at least, I RF'ed the system again with HF signals from 75 and/or 40m.... ~sigh~ 73 = Best Regards, -Geoff/W5OMR _______________________________________________ App_rpt-users mailing list App_rpt-users@ohnosec.org http://ohnosec.org/cgi-bin/mailman/listinfo/app_rpt-users To unsubscribe from this list please visit http://ohnosec.org/cgi-bin/mailman/listinfo/app_rpt-users and scroll down to the bottom of the page. Enter your email address and press the "Unsubscribe or edit options button" You do not need a password to unsubscribe, you can do it via email confirmation. If you have trouble unsubscribing, please send a message to the list detailing the problem.