Re: LF: VO1NA Ebnaut recently decodes

[Riccardo Zoli <riccardozoli80@gmail.com>]

Joe, Stefan, LF

Another night with a strong signal from you, Joe. Thanks again for your transmissions which provides good opportunities for RX equipment testing.

Last night, in particular, I tried to listen your signal with my SLMS HP-3746A, equipped with its high stability oscillator (OPT.014). I have got good decodes with NO GPS reference connected to audio card or instrument; I noticed only a slight phase rotation in a couple of cases.

I used my TX inv. "L" antenna (that was tuned this time) and a 6 dB attenuator.

You can see here the results:

UTC   Eb/N0[dB] Carr.S/N[dB] Mess.

0030 7.1  32.14 *******

0100  8.0  32.20 VO1NA_R

0130 5.2  29.08 *******

0200 4.0  27.95 VO1NA_R

0230 5.7  29.01 *******

0300 3.3  27.79 VO1NA_R

0330 NIL    -              -

0400 9.0  32.46 VO1NA_R

0430 7.3  31.49 *******

0500 6.2  30.55 VO1NA_R

0530 6.1  29.86 *******

0600    -0.3  24.48 VO1NA_R

All the best

73 de Riccardo IW4DXW

Il giorno lun 11 feb 2019 alle ore 21:05 <jcraig@mun.ca> ha scritto:

Hi Riccardo, Stefan, LF,

Pleased to get your report of improved signal strength Riccardo.
The R means "Rotated L" so it is in the sky again since yesterday.
Today a cermaic feedthrough was installed on the PVC bucket
that houses the coil. It was cold (-10 C) today but the work had
to be done; there was too much charring and arcing.  All seems OK
now and the TX is on (one Decca module) 2.2A RF

73
Joe VO1NA

On Mon, 11 Feb 2019, DK7FC wrote:

> Hello Riccardo,
>
> I like the precision of your RX frequency. I should add a few nulls to my
> file too :-)
> Good work regarding Joe's reception!
>
> 73, Stefan
>
> Am 11.02.2019 12:56, schrieb Riccardo Zoli:
>>
>> Joe, LF
>>
>> Very strong signal last night continuously from 2330z to 0530z.
>> Best decode at 0300z, info attached.
>> RX setup: inverted "L" TX antenna (slightly detuned, 6 dB attenuator
>> inserted) and SDR.
>>
>> All the best,
>>
>> 73 de Riccardo IW4DXW
>>
>> Il giorno gio 7 feb 2019 alle ore 17:44 <jcraig@mun.ca
>> <mailto:jcraig@mun.ca>> ha scritto:
>>
>>     Apologies: I misspelt Domenico and did not acknowledge Riccardo's
>>     autodetector.
>>     73
>>     Joe
>>
>>     On Thu, 7 Feb 2019, jcraig@mun.ca <mailto:jcraig@mun.ca> wrote:
>>
>>     > Dominico,
>>     >
>>     > Thanks to you and Markus and Domenico for the autodecoder service.
>>     > I will check the modulator and try again tonight. Some antenna work
>>     > is planned as well when the wx improves so there should be some more
>>     > dB available soon.
>>     >
>>     > 73
>>     > Joe
>>     >
>>     > On Thu, 7 Feb 2019, Domenico IZ7SLZ wrote:
>>     >
>>     >> Joe, LF
>>     >> in my EbNaut log
>>     >> *https://qsl.net/iz7slz/EBNAUT/DECODED.TXT
>>     >> <https://qsl.net/iz7slz/EBNAUT/DECODED.TXT>*
>>     >> there are some decodes of your EbNaut of last nights (QRB=5426
>>     km). Seems
>>     >> that since yesterday, only carrier is sent on usual qrg 137477 Hz.
>>     >> Autodecoder here is now running, every XX:00 and XX:30 on Joe's
>>     parameters:
>>     >>
>>     >> 137477.000Hz N=7 T=3s 8K19A CRC=16 list=2000 sym=608 Duration=1824s
>>     >> T_OFFSET=0.0s F_OFFSET=0.000Hz
>>     >>
>>     >> 73, Domenico IZ7SLZ / JN80nu
>>     >>
>>     >
>>     >
>>
>

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