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Date: Wed, 13 Feb 2019 22:31:21 +0100
From: DK7FC <selberdenken@posteo.de>
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References: <CAC+C6w521S1Z2P59riMk3M3gxZ+Jj5MEwfCPBmA9Z6-CddugtA@mail.gmail.com> <Pine.LNX.4.64.1902071235480.9386@plato.ucs.mun.ca> <Pine.LNX.4.64.1902071306380.9507@plato.ucs.mun.ca> <CANA3B6XJkgxPcktLkrYxNK6nVaTWs6Sp7Yux+-bMfohXfOT_oA@mail.gmail.com> <5C616B8E.6000302@posteo.de> <Pine.LNX.4.64.1902111610030.4511@plato.ucs.mun.ca> <CANA3B6USAhFvdZoL7AcZoKn56nzYfNJPf7dzfE-u7Ca4vkgS2w@mail.gmail.com> <Pine.LNX.4.64.1902131632410.23275@plato.ucs.mun.ca>
In-Reply-To: <Pine.LNX.4.64.1902131632410.23275@plato.ucs.mun.ca>
Subject: Re: LF: VO1NA Ebnaut recently decodes
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Hello Joe,

Your NEO7M emits 137 kHz directly? How do you tell it to do that?
Ehm, did i ask you the same question some weeks ago or did i just 
thought that i should ask you.
Ebkey, so your'e using a Raspi for the job? I think so but maybe i 
remember wrong.
Would be interesting to know your rig in detail, the exciter stage.

73, Stefan

PS: Do you know, there are such forums, when you ask a question then 
someone answers "This question has been asked before. Did you run a 
search before?...". Terrible!

Am 13.02.2019 21:15, schrieb jcraig@mun.ca:
> Hi Riccardo, Group.
>
> Thanks for the details of your experiments and the signal reports.
> The set up here is an NEO7M to a Decca (one PA module) to a 100x20m
> RL aerial. Paul's Ebkey.c clocks the XOR. The RL has several dB over
> the monopole. Perhaps running a counterpoise under the top loading 
> wire may yield another dB or 2.  Stefan's and Markus's grabbers are
> very helpful too.
>
> 73
> Joe VO1NA
>
> On Wed, 13 Feb 2019, Riccardo Zoli wrote:
>
>> 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
>>>>> >>
>>>>> >
>>>>> >
>>>>>
>>>>
>>>
>>>
>>
>