Re: LF: strange "duplication" of DK7FC WSPR spots

[Stefan Schäfer <Stefan.Schaefer@iup.uni-heidelberg.de>]

Hi Mauro,

Oh, good question. A difference of 27 Hz, odd. I have no idea. Other 
stations, including me, must observe the same.
We could do the following test: I move my QRG by 5 Hz and then we will 
see if the offset is still the same or if it becomes 10 Hz more or less...
73, Stefan

Am 20.11.2012 22:58, schrieb IK1WVQ Mauro:
> Hi to all,
>
> I see this strange behaviour of the DK7FC WSPR spots:
>
> 2136 -24  6.5   0.475614  0 DK7FC JN49 30
> 2136   1  6.5   0.475641  0 DK7FC JN49 30
> 2142 -27  6.5   0.475614  0 DK7FC JN49 30
> 2142   0  6.5   0.475641  0 DK7FC JN49 30
> 2148 -28  6.5   0.475614  0 DK7FC JN49 30
> 2148  -2  6.5   0.475641  0 DK7FC JN49 30
>
>
> At each time slot I receive 2 spots, one strong (0 dB), and the other 
> weak (-27dB) ..
> Is this an artifact of my receiver (RACALL 1792, ant. PA0RDT) ???
>
> 73 de Mauro IK1WVQ