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DDMMM  UTC
05Feb 17:42 ..	(K5DNL Ken OK EM15lj )
05Feb 17:14 CQ CQ 1st 50.313 FT8  1000hz	(W3XS Bill OR CN74xk )
05Feb 17:02 CQ CQ 1st 50.260 MSK 1500hz	(W3XS Bill OR CN74xk )
05Feb 16:06 NM5U DAVID TNX 73	(W4IMD Peter GA EM84ab )
05Feb 15:33 n0an -- thanks for the chat! more work to do on this 	(VA3MW Mike ON FN04ll )
05Feb 15:14 VA3MW: I gotta run...the things above your IF Filter Cutoff in what you sent me are artifacts, not external noise. You can produce them at the low end too. Thanks for your observations. gotta git. 73	(N0AN/6/500/5LFA Hasan IA EN22xc )
05Feb 15:10 VA3MW: I think you may be right when the right edge of the waterfall is at least 2500 Hz, not sure, the reported SNR at the bottom of the band is another thing (RefSpec vs. Flatten)	(N0AN/6/500/5LFA Hasan IA EN22xc )
05Feb 15:07 Same decode, 8 dB different, depending on RefSpec or Flatten selected.	(N0AN/6/500/5LFA Hasan IA EN22xc )
05Feb 15:06 Perhaps then, it is just the reported SNR, when you get a VERY large difference between the RefSpec SNR and the Flatten SNR on the low end.	(N0AN/6/500/5LFA Hasan IA EN22xc )
05Feb 15:06 and that if you make it wider or narrower, it really does not matter.  It is a just a reported metric and only reported after a succesful decode. 	(VA3MW Mike ON FN04ll )
05Feb 15:03 ) 	(VA3MW Mike ON FN04ll )
05Feb 15:03 I thought that the noise floor is calculated based on a normalized 2500hz passband meaning the SNR does not change regardless of what the operational passband is.  (aka... much wider or much narrower	(VA3MW Mike ON FN04ll )
05Feb 14:59 If you narrow the waterfall width, to less than the IF Filter Bandwidth, you will not decode anything above the right edge of the waterfall.	(N0AN/6/500/5LFA Hasan IA EN22xc )
05Feb 14:57 When you artificially introduce false signals into the bandwidth the SNR is in error. Anyway, that's my experience, do as you like.	(N0AN/6/500/5LFA Hasan IA EN22xc )
05Feb 14:56 ignal you are listening to , to the ENTIRE bandwidth. 	(N0AN/6/500/5LFA Hasan IA EN22xc )
05Feb 14:56 VA3MW: I have no idea, but if the the software filter is limited to 2500 Hz, how do we decode signals at 3000? I think you misinterpreted Joe's comments about filter sharpness. The SNR compares the s	(N0AN/6/500/5LFA Hasan IA EN22xc )
05Feb 14:55 is the SNR calculated on the entire Waterfall bandwidth or the bandwidth of the signal we are attempting to decode?  	(VA3MW Mike ON FN04ll )
05Feb 14:52 145200 -13  0.1 2007 :  NM3G N0AN RR73       q3	(NM3G Rick NC EM96wd )
05Feb 14:52 n0an - has someone written up a white paper (or similar) on this?  This is all new to me and I've been on MSK144 and FT8 for a LONG time and this is the first I have heard any of this.	(VA3MW Mike ON FN04ll )
05Feb 14:50 144930  -5  0.1 1997 :  N0AN NM3G R-10       q0	(N0AN/6/500/5LFA Hasan IA EN22xc )
05Feb 14:49 144900 -10  0.1 2010 :  NM3G N0AN -24        q0	(NM3G Rick NC EM96wd )
05Feb 14:49 144830 -24  0.2 1997 :  N0AN NM3G EM96       q3	(N0AN/6/500/5LFA Hasan IA EN22xc )
05Feb 14:45 VA3MW: the same setting should be used for FT8, FT4, set the waterfall to the edge of your rx IF filter. 	(N0AN/6/500/5LFA Hasan IA EN22xc )
05Feb 14:44 You bet, Mike, nice to work you on 15 seconds, 73	(N0AN/6/500/5LFA Hasan IA EN22xc )
05Feb 14:43 VA3MW: that is correct, but the SNR is calculated for the entire waterfall bandwidth and it messes up the calculation.	(N0AN/6/500/5LFA Hasan IA EN22xc )
05Feb 14:43 n0an thanks for the Q	(VA3MW Mike ON FN04ll )
05Feb 14:42 ass.	(N0AN/6/500/5LFA Hasan IA EN22xc )
05Feb 14:42 VA3MW: that is  not power line noise, that is an artifact caused by your waterfall set too wide. From the looks of it, you should sest your waterfall at 2700 hz, because that's all your filter will p	(N0AN/6/500/5LFA Hasan IA EN22xc )
05Feb 14:41 n0an https://imgur.com/jzHFfxL	(VA3MW Mike ON FN04ll )
05Feb 14:41 but, you are in the log  and thanks on the filters .  I was told by Joe one day that the audio filters are pretty sharp, but that was years ago (in wsjt) 	(VA3MW Mike ON FN04ll )
05Feb 14:40 But,,,we did it	(N0AN/6/500/5LFA Hasan IA EN22xc )
05Feb 14:40 143815 -20  0.5 1003 :  N0AN VA3MW 73        q3 Canada: mike that 3500 bw on ur is intefering with your decodes. The decode bandwidth should NEVER be larger than your IF Filter on SSB	(N0AN/6/500/5LFA Hasan IA EN22xc )
05Feb 14:39 wandering	(VA3MW Mike ON FN04ll )
05Feb 14:39 yea...that is a wondering powersupply somewhere on the property	(VA3MW Mike ON FN04ll )
05Feb 14:38 Mike take your right edege of the waterfall down to 2700 or 2900 Hz, you are mixing noise in with your decode	(N0AN/6/500/5LFA Hasan IA EN22xc )
05Feb 14:37 143600 -13  0.2 1000 :  VA3MW N0AN -13       q3	(VA3MW Mike ON FN04ll )
05Feb 14:36 143545 -13  0.5 1003 :  N0AN VA3MW CP36      q3	(N0AN/6/500/5LFA Hasan IA EN22xc )
05Feb 14:36 n0an yes https://imgur.com/Ys8j123	(VA3MW Mike ON FN04ll )
05Feb 14:35 VA3MW: you see any sparkles?	(N0AN/6/500/5LFA Hasan IA EN22xc )
05Feb 14:35 Can't type this morning	(N0AN/6/500/5LFA Hasan IA EN22xc )
05Feb 14:34 VA3MW: Calling yoiu DF 1000, 500w 6 EL at 62 '	(N0AN/6/500/5LFA Hasan IA EN22xc )
05Feb 14:34 what setting is DF?	(VA3MW Mike ON FN04ll )
05Feb 14:33 CAlling you, me 1st DF 2000, 500w	(N0AN/6/500/5LFA Hasan IA EN22xc )
05Feb 14:33 200 watts (FlexRadio Aurora AU-520) 4 element beam at 50' FN04	(VA3MW Mike ON FN04ll )
05Feb 14:32 Transmit audio tones and rx audio tones	(N0AN/6/500/5LFA Hasan IA EN22xc )
05Feb 14:32 VA3MW ... Good morning Mike ... I'm going to listen ... already pointed your way.	(NM3G Rick NC EM96wd )
05Feb 14:32 what is the DF setting?  (as in in WSJT? ) 	(VA3MW Mike ON FN04ll )
05Feb 14:31 Dial it up and call me, I'll see if I can hear you, but we probably would have better luck on 60C (mode). How much power are you running?	(N0AN/6/500/5LFA Hasan IA EN22xc )
05Feb 14:30 VA3MW: We are running Q65-15B on 50.235 with a DF of 1000	(N0AN/6/500/5LFA Hasan IA EN22xc )
05Feb 14:30 I mean n0an :) 	(VA3MW Mike ON FN04ll )

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