Thanks Eric, that's roughly what I expected. I seem to remember that the clicks diminish with the noise blanker turned on, which led me to the concept of noise generated on the parallel port wiring as a potential cause. ----- Original Message ----- From: "Eric Wachsmann" <[EMAIL PROTECTED]> To: "'Wayne Roth'" <[EMAIL PROTECTED]>; <flexradio@flex-radio.biz> Sent: Wednesday, January 09, 2008 12:48 PM Subject: RE: [Flexradio] SDR1000 clicks during tuning - does USB control help?
>I think the basic issue is the synchronization of retuning the hardware and > the software oscillator. I think if you stay within the 3kHz window when > Spur Reduction is turned on (where it will not retune the hardware), you > will notice it is fairly fluid. > > This is definitely an area where we have an opportunity to improve things. > > > Eric Wachsmann > FlexRadio Systems > >> -----Original Message----- >> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] >> radio.biz] On Behalf Of Wayne Roth >> Sent: Wednesday, January 09, 2008 12:02 PM >> To: flexradio@flex-radio.biz >> Subject: [Flexradio] SDR1000 clicks during tuning - does USB control >> help? >> >> I've had a SDR1000 for eons now and it's always bugged me that rapidly >> changing frequency with the mouse wheel, mouse drag of pan adapter, or >> Griffin PowerMate interjects noise as the frequency changes. You can't >> really spin the dial on this radio like a hardware radio. I'm currently >> using a parallel port connection and was wondering if the USB to parallel >> port adapter reduces the noise clicks as the vfo changes? If the noise >> clicks are 100% a function of the synthesizer changing, then I would >> suggest >> not. If there's some noise from the long lines in the cable changing >> state >> and coupling to the receiver, then there could be an improvement. Does >> anyone have any experience with the noise and switching from parallel to >> USB? >> >> I suppose I could walk out of my office and across the parking lot 200 >> feet >> to the FlexRadio assembly warehouse and ask, but why expend my valuable >> energy walking? >> >> Wayne >> WA2N/5 >> Austin, Tx >> >> >> _______________________________________________ >> 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://kb.flex-radio.com/ Homepage: http://www.flex- >> radio.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://kb.flex-radio.com/ Homepage: http://www.flex-radio.com/
