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The original message has been attached to this so you can view it or label similar future email. If you have any questions, see the administrator of that system for details. Content preview: Hi Markus, Thanks for the decoe results. Interestingly the Eb/N0 from your side is even better than from DL0AO, i did not expect this :-) A confirmation of the assumptions based on the ray propagation model? BTW i got no decode from the last nights message, neither from the PPS nor from the DHO instance. Odd... [...] Content analysis details: (0.0 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RP_MATCHES_RCVD Envelope sender domain matches handover relay domain 0.0 HTML_MESSAGE BODY: HTML included in message X-Scan-Signature: f6bad70c4aa77b0bf5528aff34072d8d Subject: Re: R: Re: VLF: EbNaut message over 2877 km, DK7FC to RC4HAA Content-Type: multipart/alternative; boundary="------------020903020005020100060105" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.5 required=5.0 tests=HTML_20_30,HTML_MESSAGE autolearn=no version=2.63 X-SA-Exim-Scanned: Yes Sender: owner-rsgb_lf_group@blacksheep.org Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group X-SA-Exim-Rcpt-To: rs_out_1@blacksheep.org X-SA-Exim-Scanned: No; SAEximRunCond expanded to false This is a multi-part message in MIME format. --------------020903020005020100060105 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Hi Markus, Thanks for the decoe results. Interestingly the Eb/N0 from your side is even better than from DL0AO, i did not expect this :-) A confirmation of the assumptions based on the ray propagation model? BTW i got no decode from the last nights message, neither from the PPS nor from the DHO instance. Odd... 73, Stefan Am 10.11.2017 17:06, schrieb Markus Vester: > Hi Stefan, > your recent messages were also successfully decoded at DF6NM (E-field) > and DL0AO (west cardioid): > > date msg df6nm dl0ao > Nov. dB dB > 5-6 R 13.2 12.0 > 6-7 73 10.4 9.4 > 7-8 xxx 1.6 7.5 > 8-9 xxx 10.9 7.4 > 9-10 xx 11.9 8.1 > > Note that these carrier Eb/N0 results are probably 1.5 dB too low, due > to our short 8.9 hour recordings. Today I have changed the FFT > resolution on our grabbers from 31.4 to 20.93 uHz, so that SpecLab > data exports will now be covering up to 13.23 hours. > > Best 73, > Markus (DF6NM) > > > > -----Ursprüngliche Mitteilung----- > Von: DK7FC > An: rsgb_lf_group > Verschickt: Do, 9. Nov 2017 18:36 > Betreff: Re: R: Re: VLF: EbNaut message over 2877 km, DK7FC to RC4HAA > > Thanks Paul, good to see. > I tried various time and frequency offsets for the wav file from last > night and for the stacked file from the last two nights. No result. > Now i started two SpecLab instances on the RX site, one is using > PPS+NTP, the other one DHO38. During the transmision time, DHO38 has a > good strength and no terminator is passing, so maybe it will give > better results, at least it will be interesting to compare. > Since i want to avoid false decodes, i changed the parameters and will > try 2 characters again. Tonite: > > *f = 8270.1000 Hz > Start time: 09.November.2017 16:00:00 UTC > Symbol period: 60 s > Characters: 2 > CRC bits: 15 > Coding 16K21A > Duration: 12:32 > Antenna current: 620 mA > > *73, Stefan > > > Am 09.11.2017 17:23, schrieb Paul Nicholson: > > > Stefan wrote: > > > f = 8270.1000 Hz > > Start time: 07.November.2017 16:00:00 UTC > > Symbol period: 60 s > > Characters: 3 > > CRC bits: 9 > > Coding 16K21A > > Duration: 12:32 > > > Paul, did you copy my message from last night and the night > > before? > > Yes, a strong signal here and perfect decode of the 3 chars: > > H-field E-field E+H field > 7th/8th 10.5 dB 99.8 deg 9.0 dB 107.3 deg 12.5 dB 103.3 deg > 8th/9th 14.1 dB 88.3 deg 12.5 dB 93.8 deg 17.3 dB 90.9 deg > > > I am getting no decode at RC4HAA, even when stacking both nights. > > Signal phase repeated fine both nights. Given the S/N of your 2 char > success, you would be very lucky to do 3 chars in one night, but two > nights ought to do it. > > -- > Paul Nicholson > -- > --------------020903020005020100060105 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: 8bit Hi Markus,

Thanks for the decoe results. Interestingly the Eb/N0 from your side is even better than from DL0AO, i did not expect this :-) A confirmation of the assumptions based on the ray propagation model?
BTW i got no decode from the last nights message, neither from the PPS nor from the DHO instance. Odd...

73, Stefan


Am 10.11.2017 17:06, schrieb Markus Vester:
Hi Stefan,
your recent messages were also successfully decoded at DF6NM (E-field) and DL0AO (west cardioid):

date msg df6nm dl0ao
Nov.           dB     dB
5-6     R    13.2  12.0
6-7    73    10.4   9.4
7-8    xxx    1.6    7.5
8-9    xxx  10.9    7.4
9-10   xx   11.9    8.1

Note that these carrier Eb/N0 results are probably 1.5 dB too low, due to our short 8.9 hour recordings. Today I have changed the FFT resolution on our grabbers from 31.4 to 20.93 uHz, so that SpecLab data exports will now be covering up to 13.23 hours.

Best 73,
Markus (DF6NM)



-----Ursprüngliche Mitteilung-----
Von: DK7FC <selberdenken@posteo.de>
An: rsgb_lf_group <rsgb_lf_group@blacksheep.org>
Verschickt: Do, 9. Nov 2017 18:36
Betreff: Re: R: Re: VLF: EbNaut message over 2877 km, DK7FC to RC4HAA

Thanks Paul, good to see.
I tried various time and frequency offsets for the wav file from last night and for the stacked file from the last two nights. No result.
Now i started two SpecLab instances on the RX site, one is using PPS+NTP, the other one DHO38. During the transmision time, DHO38 has a good strength and no terminator is passing, so maybe it will give better results, at least it will be interesting to compare.
Since i want to avoid false decodes, i changed the parameters and will try 2 characters again. Tonite:

f = 8270.1000 Hz
Start time: 09.November.2017  16:00:00 UTC
Symbol period: 60 s
Characters: 2
CRC bits: 15
Coding 16K21A
Duration: 12:32
Antenna current: 620 mA

73, Stefan


Am 09.11.2017 17:23, schrieb Paul Nicholson:

Stefan wrote:

> f = 8270.1000 Hz
> Start time: 07.November.2017  16:00:00 UTC
> Symbol period: 60 s
> Characters: 3
> CRC bits: 9
> Coding 16K21A
> Duration: 12:32

> Paul, did you copy my message from last night and the night
> before?

Yes, a strong signal here and perfect decode of the 3 chars:

            H-field           E-field             E+H field
 7th/8th  10.5 dB 99.8 deg   9.0 dB 107.3 deg   12.5 dB 103.3 deg
 8th/9th  14.1 dB 88.3 deg  12.5 dB  93.8 deg   17.3 dB  90.9 deg

> I am getting no decode at RC4HAA, even when stacking both nights.

Signal phase repeated fine both nights.  Given the S/N of your 2 char
success, you would be very lucky to do 3 chars in one night, but two
nights ought to do it.

--
Paul Nicholson
--

--------------020903020005020100060105--