Topband: Anyone using WSPR or WSPR-X?

[Jim Brown]

On Wed,9/3/2014 2:39 AM, Mike Waters wrote:
> Yesterday I decoded a Chinese station on 30m WSPR, at a level of -28. From
> http://wsprnet.org/drupal/wsprnet/spots:
> 2014-09-02 21:34  BZ1UIF  10.140268  -28  0  ND81  5  W0BTU  EM37  17566
>   158
>
> According to something you said in your interface PDF, the -28 seems to
> indicate that I already have a decent sound card (among other things.) What
> do you think?

Probably yes, but my testing was JT65, where -22 to -23 is pretty much 
the lower limit at which signals can be decoded. WSPR uses a more 
powerful noise reduction protocol that can get deeper into the noise 
floor. Check the WSPR doc for what that limit is.

73, Jim K9YC