Joe: Could WWV/WWVH's 100 Hz time code subcarrier be part of the problem?
Jack Joe Subich, W4TV wrote: > I also notice that the tracking will lock up anywhere +/- > 25 cycles of nominal. I've heard one case where AM sync > did not sound particularly good ... that's with some of > the metrological voice broadcasts on WWV/WWVH. Still that > appears to be a case where the sync AM is amplifying an > issue at the source because the normal envelope detector > does not sound very good either. > > 73, > > ... Joe, W4TV > > > > >> -----Original Message----- >> From: elecraft-boun...@mailman.qth.net >> [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of drewko >> Sent: Thursday, November 12, 2009 8:37 AM >> To: Elecraft@mailman.qth.net >> Subject: Re: [Elecraft] [Elecraft_K3] K3 Beta Firmware Rev. >> 3.57: Synchronous AM Detection (AM-S); misc. improvements >> >> >> I also think the sync det works great. My VFO locks 4 or 5 Hz >> high using the 13 KHz filter. The 2.7 KHz filter locks right >> on the money. Switching to the narrower filter will also lock >> signals that are too weak to lock on the wide filter. Not >> that you'd want to use the 2.7 filter for listening to AM broadcasts. >> >> 73, >> Drew >> AF2Z >> >> >> On Thu, 12 Nov 2009 03:59:38 -0600, Dale, K9VUJ wrote: >> >> >>> Installed 3.57 this morning. I am listening to Radio Zealand now, at >>> 0945 Z on 9765 Khz. Sync det seems to work very well. I'm >>> >> trying it >> >>> back and forth between AM and AM-S. I am using the VFO >>> >> tracking and >> >>> it locked right on, but my VFO display reads 9.764.991. >>> >> Perhaps I'll >> >>> have to re-check calibration sometime, no biggie here. I like this >>> sync det. It now makes me wish I had the 15 Khz filter in >>> >> addition to >> >>> my 6 Khz. filter. >>> >>> Thankyou Elecraft for another flawless upload. Am using the Mac and >>> that utility which also has been flawless here. >>> >>> 73 >>> Dale, K9VUJ >>> >>> >>> >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft@mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
