Hi Tobias,

 

 

Though in this case the weak transmissions were not decoded, I think that WSPR(-15) in general seems to cope rather well with severe QSB (maybe better than QRSS). However a "bent" signal with variable drift (like that from Vinny's transverter) may actually be less likely to decode than one with the first part missing. The situation may be analogous to a phase inversion near the middle of a PSK sequence, resulting in half of the symbols being systematically wrong (50% error rate). On the other hand, replacing half of the sequence by random noise produces only 25% errors.

 

Best 73,
Markus (DF6NM)

-----Ursprüngliche Mitteilung-----
Von: Tobias DG3LV <[email protected]>
An: rsgb_lf_group <[email protected]>
Verschickt: Mi, 3 Feb 2016 8:52 am
Betreff: Re: Re: LF: MF: WSPR-15 this night

 

Hi Vinny, MF ! 

Good job ! Your signal was ok and loud last night. Congrats ! 

 

There could have been an additional WSPR-15 station on 475.807 at 22:00h  

to 22:30h, but it was too weak to be decoded at my side.(see picture) No  

one else was listed for a decode, so who was it ? 

 

Anyone on this reflector ? 



73 de dg3lv Tobias

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