see also: www.timeok.it/files/10_mhz_bandpass_filter.pdf
Luciano Luciano P. S. Paramithiotti IZ5JHJ --------- Original Message -------- From: n1...@burlingtontelecom.net To: Discussion of precise time and frequency measurement <time-nuts@febo.com> Subject: Re: [time-nuts] filtering a 10Mhz frequency standard? Date: Dec 13, 2011 12:12 PM > Paul's simple filter: > > http://www.w1ghz.org/small_proj/small_proj.htm > > Mike > > ----- Original Message ----- > From: "Bob Bownes" <bow...@gmail.com> > To: <li...@lazygranch.com>; "Discussion of precise time and frequency > measurement" <time-nuts@febo.com> > Sent: Monday, December 12, 2011 10:11 PM > Subject: Re: [time-nuts] filtering a 10Mhz frequency standard? > > > Paul Wade did a paper on 10Mhz GPSDO filtering for Microwave Update in > October. It is in the proceedings. I don't know if it is available > elsewhere. > > Bob > > > On Mon, Dec 12, 2011 at 9:17 PM, <li...@lazygranch.com> wrote: > > I think you would want to avoid crystal filters due to microphonics. > > > > I've found building good LCR filters harder in real life than on paper. > > (I've done plenty of leapfrog active filters from LCR based designs.) I've > > had to make a passive LCR for ADC testing and secondary (parasitic > > elements of nonideal component) come into play. Nowadays I just buy COTS. > > > > > > ------Original Message------ > > From: Chris Albertson > > Sender: time-nuts-boun...@febo.com > > To: Discussion of precise time and frequency measurement > > ReplyTo: Discussion of precise time and frequency measurement > > Subject: [time-nuts] filtering a 10Mhz frequency standard? > > Sent: Dec 12, 2011 5:54 PM > > > > What is the best practice for filtering a 10Mhz sine wave frequency > > standard? I've read that you can do more harm than good. Filter > > parts (caps, resistors and so on) are all temperature sensitive. But > > all those $40 Rb oscillators are putting out a pretty rough looking > > sine wave. > > > > Are some types of filters better. I thought about a crystal filters. > > > > -- > > > > Chris Albertson > > Redondo Beach, California > > > > _______________________________________________ > > time-nuts mailing list -- time-nuts@febo.com > > To unsubscribe, go to > > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > > and follow the instructions there. > > _______________________________________________ > > time-nuts mailing list -- time-nuts@febo.com > > To unsubscribe, go to > > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > > and follow the instructions there. > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > > > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > Sent to you using Uebimiau Webmail version 3.11 Developed by Dave and Todd at http://www.manvel.net and http://www.tdah.us _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
