[Lowfer] WSPR for Dec.14-15

Eric NO3M no3m at no3m.net
Sat Dec 15 16:38:32 EST 2012


The sidebands reported via WSPR came out around -22Hz, -11Hz, +13 
Hz, +25 Hz; John/EAR may also want to bypass the audio DSP unit 
and see what difference that contributes.  The WSPR software will 
handle the "audio" filtering.  The TS440 SSB filtering (1.8 - 2.8 
kHz) should be fine unless you have overloading signals outside 
of the WSPR "window" causing receiver blocking/de-sense.

73 - Eric NO3M, WG2XJM

On 12/15/12 16:24, John Andrews wrote:
> All,
>
> I have frequently had a problem here with WSPR on 2200M with 
> the strong 60 Hz related lines at this QTH. This results in 
> multiple signals and false decodes. Thus far there is no cure, 
> as the sources are at neighbors' houses. I would suggest not 
> running a noise blanker in your receiver, though.
>
> Note that I have generally not had this issue at 600M, which is 
> quieter here, 60 Hz-wise. But there I have to live with PDM 
> crud from a nearby broadcast transmitter. Guess you can't have 
> everything...
>
> John, W1TAG
>
>



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