Hello Stefan,
your DDS is probably OK.
For some odd reason Argo sometimes shows a frequency offset.
73, Rik ON7YD - OR7T
________________________________________
Van: [email protected] [[email protected]]
namens Stefan Schäfer [[email protected]]
Verzonden: dinsdag 19 juni 2012 0:13
Aan: [email protected]
Onderwerp: Re: LF: 475kHz grabber
Hello Rik,
How accurate is your grabber QRG? Am i really 20 Hz off the QRG with the
DDS VFO here?
73, Stefan
Am 18.06.2012 20:02, schrieb Rik Strobbe:
> On request of Marco, DD7PC, I am running a grabber on 475kHz (474.95-475.05):
> http://www.strobbe.eu/argo/
> The grabber may be interrupted for a QSO.
>
> 73, Rik ON7YD - OR7T
>
> ________________________________________
> Van: [email protected] [[email protected]]
> namens Stefan Schäfer [[email protected]]
> Verzonden: zondag 17 juni 2012 16:03
> Aan: [email protected]
> Onderwerp: LF: Further MF impressions
>
> MF,
>
> I just thought my receiver isn't working correctly. I thought the xtal
> does not start to oscillate due to the higher ambient temperatures in
> the afternoon. But later i found that the band noise on MF is
> significantly lower than in the evening, at least 20 dB. So now i see
> that the band noise is about 5 dB above my soundcard noise with the
> current setup.
>
> What do others know about the ground wave range in summer and in the
> afternoon? When does the band open? Similar to LF?
>
> BTW thanks to DF6NM for the grabber. Nice tool to get some experience in
> these first days...
>
> 73, Stefan/DK7FC
>
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