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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 @@CONTACT_ADDRESS@@ for details. Content preview: Hi Jacek, wrong frequency? I think Stefan was on 2970.01 Hz, not 2970.1 Hz. 73 and good luck, Markus Content analysis details: (0.0 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at http://www.dnswl.org/, no trust [74.6.128.82 listed in list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record 0.0 FREEMAIL_FROM Sender email is commonly abused enduser mail provider (markusvester[at]aol.com) 0.0 HTML_MESSAGE BODY: HTML included in message 0.0 T_DKIM_INVALID DKIM-Signature header exists but is not valid X-Scan-Signature: 052e5a7ab87161a07560b72babff3441 Subject: Re: ULF: Carrier on 2970.01 Hz Content-Type: multipart/alternative; boundary="----=_Part_11712177_1341594927.1546426884999" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: *** X-Spam-Status: No, hits=3.5 required=5.0 tests=FORGED_MUA_MOZILLA,HTML_30_40, 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 ------=_Part_11712177_1341594927.1546426884999 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Hi Jacek, wrong frequency? I think Stefan was on 2970.01 Hz, not 2970.1 Hz. 73=C2=A0and good luck,=20 Markus -----Urspr=C3=BCngliche Mitteilung----- Von: Jacek Lipkowski An: rsgb_lf_group Verschickt: Mi, 2. Jan. 2019 10:43 Betreff: Re: ULF: Carrier on 2970.01 Hz This is the best i can do so far. Using vlfrx-tools 0.9f and vtfilter -a th=3D5 -h hp,f=3D1750,poles=3D8 -h lp,f=3D4250,poles=3D8 | vtbl= ank -a25 -d0.005 -t1000 Does that count as a reception? VY 73 es HNY Jacek / SQ5BPF On Sun, 30 Dec 2018, DK7FC wrote: > Date: Sun, 30 Dec 2018 22:15:04 +0100 > From: DK7FC > Reply-To: rsgb_lf_group@blacksheep.org > To: rsgb_lf_group@blacksheep.org > Subject: Re: ULF: Carrier on 2970.01 Hz >=20 > Hello Jacek, > > Did you just look into a spectrogram or did you try to produce a spectrum= =20 > peak from your data storage? > Do you use the -a th=3Dx function in vtfilter. > I think i have the latest version of vlfrx-tools. It is worth to upgrade.= =20 > Instead of the band pass filter i'm using a low pass and a high pass. Aft= er a=20 > lot of trials i tend to use this setting as a standard: > vtread -T2018-12-30,11:17,+2h /database | vtcat -p | vtfilter -a th=3D5 -= h=20 > hp,f=3D1750,poles=3D8 -h lp,4250,poles=3D8 | vtblank -a25 -d0.0005 -t100 = | vtmult=20 > -f2970.01 | vtresample -r240 | vtresample -r10 | vtraw -oa | ebnaut -dp8K= 19A=20 > -c4 -r10 -v -f15 -f16 -N5 -M'*****' -k27 -S12 > > The ebnaut message is just a dummy for a 2 hour long carrier transmission= .=20 > The output of that command line will show the S/N of the spectrum peak in= its=20 > bandwidth (1/duration). > The autonotch filter is important in that frequency range and can decide= =20 > between failed and success! > > I would be interested in the result on your side. > > 73, Stefan > > > > Am 30.12.2018 21:45, schrieb Jacek Lipkowski: >> Ufortunately i didn't receive anything here. Not very exciting but i=20 >> believe that negative results should also be reported. >>=20 >> The spectrograms: >>=20 >> https://klubnl.pl/grabber/grabber_sq5bpf_2970.png >> https://klubnl.pl/grabber/grabber_sq5bpf_2970_avg.png >>=20 >> Right now i use the same settings as on my 5170Hz grabber: a 3kHz wide= =20 >> filter centered on 2970Hz, followed by vtblank=C2=A0 -a1.4 -d0 -t100 (vt= blank=20 >> from old vlfrx-tools). I would be grateful for any suggestions how to=20 >> improve this, maybe the filter is too wide (and lets too many 50Hz=20 >> harmonics through. which upset the blanker). >>=20 >> The antenna isn't optimised for ULF. >>=20 >> VY 73 >>=20 >> Jacek / SQ5BPF >>=20 >> On Sun, 30 Dec 2018, DK7FC wrote: >>=20 >>> Date: Sun, 30 Dec 2018 12:38:04 +0100 >>> From: DK7FC >>> Reply-To: rsgb_lf_group@blacksheep.org >>> To: rsgb_lf_group@blacksheep.org >>> Subject: ULF: Carrier on 2970.01 Hz >>>=20 >>> Hi ULF, >>>=20 >>> The accu is fully recharged and i am on the hill again, transmitting on= =20 >>> the ground loop antenna. This time, the accu has even more power. The T= X=20 >>> power is 520 W (!), the DC measurement tells i need just 64 V for 1 A, = and=20 >>> now, at 2970.01 Hz i am getting a record antenna current of 2.75 A!! >>> The carrier ison the air since 11:17 UTC and i intend to run it for 2= =20 >>> hours again, like yesterday. >>>=20 >>> Reports are welcome :-) >>>=20 >>> 73, Stefan >>>=20 >>=20 > ------=_Part_11712177_1341594927.1546426884999 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable
Hi Jacek,

wrong frequency? I think Stefan was on = 2970.01 Hz, not 2970.1 Hz.

73 and good luck,
Markus

= -----Urspr=C3=BCngliche Mitteilung-----
Von: Jacek Lipkowski <sq5bpf@= lipkowski.org>
An: rsgb_lf_group <rsgb_lf_group@blacksheep.org>=
Verschickt: Mi, 2. Jan. 2019 10:43
Betreff: Re: ULF: Carrier on 2970= .01 Hz

This is the best i can do so far. Usin= g vlfrx-tools 0.9f and

vtfilter -a th= =3D5 -h hp,f=3D1750,poles=3D8 -h lp,f=3D4250,poles=3D8 | vtblank -a25 -d0.0= 05 -t1000

Does that count as a recepti= on?

VY 73 es HNY
Jacek / SQ5BPF


On Sun, 30 Dec 2018, DK7FC wrote:

> Date: Sun, 30 = Dec 2018 22:15:04 +0100
> From: DK7FC <selberdenken@posteo.de>
> Reply-To: rsgb_lf_group@blacksheep.org
> T= o: rsgb_lf_= group@blacksheep.org
> Subject: Re: ULF: Carrier o= n 2970.01 Hz
>
> Hello Jacek,>
> Did you just look into a spectr= ogram or did you try to produce a spectrum
> peak fro= m your data storage?
> Do you use the -a th=3Dx functi= on in vtfilter.
> I think i have the latest version of= vlfrx-tools. It is worth to upgrade.
> Instead of th= e band pass filter i'm using a low pass and a high pass. After a
> lot of trials i tend to use this setting as a standard:
> vtread -T2018-12-30,11:17,+2h /database | vtcat -p | vtf= ilter -a th=3D5 -h
> hp,f=3D1750,poles=3D8 -h lp,4250= ,poles=3D8 | vtblank -a25 -d0.0005 -t100 | vtmult
> -= f2970.01 | vtresample -r240 | vtresample -r10 | vtraw -oa | ebnaut -dp8K19A=
> -c4 -r10 -v -f15 -f16 -N5 -M'*****' -k27 -S12
>
> The ebnaut message is just a dumm= y for a 2 hour long carrier transmission.
> The outpu= t of that command line will show the S/N of the spectrum peak in its
> bandwidth (1/duration).
> The autono= tch filter is important in that frequency range and can decide
> between failed and success!
>
> I would be interested in the result on your side.
>
> 73, Stefan
>
>
>
> Am 30.12.2018 = 21:45, schrieb Jacek Lipkowski:
>> Ufortunately i d= idn't receive anything here. Not very exciting but i
>= ;> believe that negative results should also be reported.
>>
>> The spectrograms:
>>
>> https://klubnl.pl/grabber/grabber_sq5bpf_2970.png
>> http= s://klubnl.pl/grabber/grabber_sq5bpf_2970_avg.png
>= ;>
>> Right now i use the same settings as on m= y 5170Hz grabber: a 3kHz wide
>> filter centered o= n 2970Hz, followed by vtblank  -a1.4 -d0 -t100 (vtblank
>> from old vlfrx-tools). I would be grateful for any suggestion= s how to
>> improve this, maybe the filter is too = wide (and lets too many 50Hz
>> harmonics through.= which upset the blanker).
>>
&g= t;> The antenna isn't optimised for ULF.
>>
>> VY 73
>>
>> Jacek / SQ5BPF
>>
>= > On Sun, 30 Dec 2018, DK7FC wrote:
>>
>>> Date: Sun, 30 Dec 2018 12:38:04 +0100
>>> From: DK7FC <selberdenken@posteo.de>
>>> Rep= ly-To: rsgb= _lf_group@blacksheep.org
>>> To: rsgb_lf_group@blackshe= ep.org
>>> Subject: ULF: Carrier on 2970.01 = Hz
>>>
>>> Hi ULF,>>>
>>> The accu is f= ully recharged and i am on the hill again, transmitting on
>>> the ground loop antenna. This time, the accu has even more = power. The TX
>>> power is 520 W (!), the DC me= asurement tells i need just 64 V for 1 A, and
>>&g= t; now, at 2970.01 Hz i am getting a record antenna current of 2.75 A!!
>>> The carrier ison the air since 11:17 UTC and i = intend to run it for 2
>>> hours again, like ye= sterday.
>>>
>>> Rep= orts are welcome :-)
>>>
>= >> 73, Stefan
>>>
>&= gt;
>

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