Thanks, Eric. Yes that figures. What seemed puzzling was that without Spur Reduction it wasn't clicking on every tuning step - like 100 Hz for example.
OK, I'll learn to live with it. Thanks again, Jack On 22 May 2006, at 23:22, Eric Wachsmann - FlexRadio wrote: > Jack, > > Now we're getting somewhere. :) What you are hearing is the DDS > retuning. When this happens, you get a glitch in the audio. The > reason > you only hear it every 3.051kHz when Spur Reduction is on is > because we > only retune the DDS every 3.051kHz in that algorithm (fine tuning is > done in software). When Spur Reduction is off, we retune the DDS with > each and every change to the VFO. > > > Eric Wachsmann > FlexRadio Systems > >> -----Original Message----- >> From: Jack Weber [mailto:[EMAIL PROTECTED] >> Sent: Monday, May 22, 2006 5:14 PM >> To: [EMAIL PROTECTED] >> Cc: FlexRadio@flex-radio.biz >> Subject: Re: [Flexradio] Tuning Clicks >> >> Eric, >> >> Thanks for your response. >> >> Since I sent my last email, I've checked this out some more and what >> I find is that the click occurs on every 1 kHz step with Spur >> Reduction OFF and every 3 kHz with Spur Reduction ON. If I reduce the >> step to 100 Hz it happens at those same frequency intervals. So, it's >> definitely not coming from the mouse wheel but seems to be connected >> with the DDS? >> >> The effect is frequency dependent, but my observation of it becoming >> noticeable above 24 MHz was probably related to atmospheric noise >> levels. With no antenna, the clicks become noticeable above about 7 >> MHz, but are not audible below that. They occur with all mode and >> filter settings (though the actual sound is modified somewhat). >> >> Jack >> >> >> >> >> >> On 22 May 2006, at 18:47, Eric Wachsmann - FlexRadio wrote: >> >>> I haven't heard of this particular issue. Are you sure it is >>> frequency >>> dependant, or could it be happening on other bands but it just > sounds >>> different because of the mode/filter selections? >>> >>> >>> Eric Wachsmann >>> FlexRadio Systems >>> >>>> -----Original Message----- >>>> From: [EMAIL PROTECTED] [mailto:FlexRadio- >>>> [EMAIL PROTECTED] >>>> radio.biz] On Behalf Of Jack Weber >>>> Sent: Friday, May 19, 2006 8:18 AM >>>> To: FlexRadio@flex-radio.biz >>>> Subject: [Flexradio] Tuning Clicks >>>> >>>> If my SDR-1000 is tuned above about 24 MHz, I get a loud click at >>>> every step when tuning with the mouse scrollwheel. Below 24 MHz >>>> scrollwheel tuning is silent. Is this normal? It's a Microsoft USB >>>> mouse, BTW. >>>> >>>> Thanks for your help, >>>> >>>> Jack >>>> >>>> _______________________________________________ >>>> FlexRadio mailing list >>>> FlexRadio@flex-radio.biz >>>> > http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz >>>> Archive Link: http://mail.flex-radio.biz/pipermail/flexradio_flex- >>>> radio.biz/ >>>> FlexRadio Homepage: http://www.flex-radio.com >>> > > _______________________________________________ FlexRadio mailing list FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archive Link: http://mail.flex-radio.biz/pipermail/flexradio_flex-radio.biz/ FlexRadio Homepage: http://www.flex-radio.com
