Where can I find some literature on measurement equipment and techniques ? Thanks, Dick, W1KSZ
-----Original Message----- >From: Jerry Flanders <jefland...@comcast.net> >Sent: Oct 9, 2010 4:00 PM >To: Jeff Singer <jsin...@i1.net> >Cc: flexradio@flex-radio.biz >Subject: Re: [Flexradio] My Rookie Performance in the Recent FMT > >I did, and got within 27 mHz for one of the runs with my GPSDO'ed >5000a. Better than 0.1 Hz on three of the four. > >Brian, WB6RQN, got within 5 mHz on one!!! I got within 10 mHz on a >test awhile back. > >One problem with the 5000a is that the tuning step size is pretty big. > >Sound card programs like Spectrum Lab or FLDIGI can help. I have used >both in the past. > >Jerry W4UK > > > > >At 06:14 PM 10/9/2010, you wrote: >>Thanks for the alert on the K5CM Frequency Measuring Test a few nights ago. >> >>That test uses two stations to send a CW carrier on 160, 80 (twice) and 40 >>meters. A FMT is something totally new to me. My only preparation was to >>calibrate the radio carefully against WWV using its built-in scope. My >>receiver was in the DSB mode. I used the scope to guess-timate the frequency >>to an additional decimal point. >> >>Few entrants use a radio alone. Many have costly GPS based frequency >>calibration sources or the like and complex schemes to interpret the >>frequency. Experience counts. So does speed, since you only have three >>minutes to come to a conclusion. In other words, my entry wouldn't threaten >>the experts who come within one or two MILLI-hertz. >> >>But my stock Flex did very well. Three of my four readings were within 1/2 >>Hz. On 40 meters I was off by .96 Hz. QRN on 40 made the weak signal >>difficult to read on the scope. Still, accuracy was better than .25 PPM on >>each reading, well within Flex specs. Anyone else participate? >> >>Jeff K0OD >> >> >> >> >>_______________________________________________ >>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/