" If the intermittent crackles co-inside with DPC spikes, then you need to figure out what is causing that. Likely some other peripheral that is tying up your kernel."
If it is a DPC problem, the culprit(s) will be.... Bluetooth transceiver Wireless transceiver NIC card Video card. USB Excessive and/or long duration DPCs are hardware/driver problems. Upgrade your hardware drivers to the latest version especially if you are using Win7. Also you need to make sure your BIOS is at the latest revision too. Here is the other thing to check. If your FLEX-1500 is connected to a USB controller that is connected to a low speed polling device like a keyboard and/or mouse (wired or wireless), it will adversely affect the performance of the FLEX-1500. If you are using a laptop, there could be oodles of things on the USB controller. Here is how you check to make sure the FLEX-1500 isn't sharing a USB controller. http://kc.flexradio.com/KnowledgebaseArticle50459.aspx -Tim -----Original Message----- From: flexradio-boun...@flex-radio.biz [mailto:flexradio-boun...@flex-radio.biz] On Behalf Of Graham Haddock Sent: Sunday, December 05, 2010 8:09 PM To: Peter - VE3HG Cc: flexradio@flex-radio.biz Subject: Re: [Flexradio] crackling noise Peter: In addition to looking at the CPU loading in Task Manager, I also suggest that you download the tool named DPC Latency Checker from http://www.thesycon.de/dpclat and run it. The intermittent crackles caused by the CPU loading can usually be cured by installing the ".dll" patch for 2.0.1. If the intermittent crackles co-inside with DPC spikes, then you need to figure out what is causing that. Likely some other peripheral that is tying up your kernel. I would look at these things before buying a new computer. [Unless you are looking for an excuse for Santa to bring you an upgrade.] --- Graham / KE9H == On Sun, Dec 5, 2010 at 3:09 PM, Peter - VE3HG <ve...@cogeco.ca> wrote: > >> Thanks to those who suggested the graphics card might be the suspect. >> Sure enough swapped Windows 7 computers and no crackling. >> >> The 2.80 gig HP with a GeForce 8600 GT card and 4 gigs of memory was >> the problem. A 3.33 gig E-Machine with a lesser ATI HD4350 card and >> only 2 gigs of memory ran quiet - no crackling. >> >> However the 2 gigs RAM in the E-Machine don't seem sufficient for >> clean CW. I'll try more RAM but it's looking more and more like a new >> computer :( >> >> Best regards, >> >> Peter - VE3HG >> VE3HG Blog >> Follow VE3HG On Twitter >> >> >> >> >> >> >> _______________________________________________ >> FlexRadio Systems Mailing List >> FlexRadio@flex-radio.biz >> http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz >> Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ >> Knowledge Base: http://kc.flexradio.com/ Homepage: >> http://www.flexradio.com/ >> > > _______________________________________________ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flexradio.com/ Homepage: http://www.flexradio.com/ _______________________________________________ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flexradio.com/ Homepage: http://www.flexradio.com/
