Good evening Paul, Markus and all,
thank you for your updates.
I will start some EbNaut transmission at 22.00 each hour and hope that
Paul can make some measurement on my signal . Qrg is 137502.24 Hz
Initial trasmission at 22.00 will contains 22 characters at 1 s/symbol
and will be sent with 100 W power output.
Following transmissions will contains 6 characters at 3 s/symbol and
should be sent with 10 W.
Coding scheme: 8K19A.
GL.
73, Domenico / iz7slz
On 10/23/2015 7:00 PM, Paul Nicholson wrote:
>
> I have an E-field rx running on the 137 kHz band,
> GPS locked.
>
> Here is the 'first light' spectrogram
>
> http://abelian.org/tmp/lf151023a.png
>
> which covers 137 kHz to 138.5 kHz.
>
> It's a bit shaky, everything held together with
> croc clips but hopefully will survive long enough
> to pick up an amateur signal or two.
>
> I'm recording 135 to 138.5 kHz. I reckon the battery
> is good for about 60 hours.
>
> Maybe there will be some distant unmodulated carriers
> to measure, or even a coherent BPSK message.
>
> 137.5 kHz looks quiet here.
>
> --
> Paul Nicholson,
> Todmorden, UK.
> --
>
>
