Re: LF: How is possible? / WSJT-X

[DK7FC <selberdenken@posteo.de>]

Hello Andy / F6CNI,

Thank you for pointing me to WSJT-X v1.7.0-devel, it actually performs better than my old WSPR-X v0.9 r3058, especially when strong and weak signals are present in the same time slot! It also shows a 2 dB better SNR (sometimes) but i don't (still) know if it is 2 dB more sensitive. Also it decodes faster.
I will use it from now on.
Unfortunately WSPR-15 is not supported in that mode so i will use the older version for that.
Why does the program not save the band? After a restart it always starts on 2m... But that's a minor problem...
I will see if it runs for weeks without crashing, an important parameter!

How is it possible to run 2 or multiple instances? Do i need 2 installations?

73, Stefan


Am 09.09.2016 11:17, schrieb DK7FC:

I think it has to do with different software versions!?

imestamp	Call	MHz	SNR	Drift	Grid	Pwr	Reporter	RGrid	km	az
2016-09-03 09:04	F/DK7FC	0.475681	+38	0	JN29od	1	F6CNI	JN19qb	134	267

I'm still using WSPR-X v0.0 r3058 here. Newer versions performed worse for some reasons. This version does not produce SNRs better than +15 dB if i remember correctly.

Another thing may be that someone could use e.g. a 250 Hz wide filter instead of the reference filter bandwidth of 2500 Hz (SSB), which then produces wrong ("improved") reports.

73, Stefan


Am 09.09.2016 10:13, schrieb Max IK0VVE:

Could someone explain this?
 
2016-09-08 19:42  IK0VVE  0.475682  +17  0  JN61km  0.05  F6CNI  JN19qb  1119  322 
2016-09-08 19:26  IK0VVE  0.475682  +1  0  JN61km  0.05  F6CNI  JN19qb  1119  322  
2016-09-08 19:10  IK0VVE  0.475682  -1  0  JN61km  0.05  F6CNI  JN19qb  1119  322 
2016-09-08 18:54  IK0VVE  0.475682  -6  0  JN61km  0.05  F6CNI  JN19qb  1119  322 

If I listen my signal with my RX antenna 5 meters far from TX antenna my SNR is maximum +13 db, also for IZ0GIF that is about 4 km far from me.
Probably Andy has an exceptional receiving system but +17 to more than 1000 km is a great SNR I thing, HI.

After some minute great reports again:

2016-09-08 19:46	DH5RAE	0.475755	+14	1	JN68qv	0.5	F6CNI	JN19qb	730	275
2016-09-08 19:46	PA3ABK/2	0.475740	+19	0	JO21it	0.5	F6CNI	JN19qb	320	198

 
73, Max IK0VVE 

 

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