Return-Path: X-Spam-DCC: paranoid 1233; Body=2 Fuz1=2 Fuz2=2 X-Spam-Checker-Version: SpamAssassin 3.1.3 (2006-06-01) on lipkowski.org X-Spam-Level: X-Spam-Status: No, score=0.1 required=5.0 tests=BAYES_00,DNS_FROM_AHBL_RHSBL, FORGED_RCVD_HELO,HTML_MESSAGE,HTML_TINY_FONT,SPF_PASS autolearn=no version=3.1.3 Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by paranoid.lipkowski.org (8.13.7/8.13.7) with ESMTP id u46LZ7p1030012 for ; Fri, 6 May 2016 23:35:07 +0200 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1aynKm-0002zK-E8 for rs_out_1@blacksheep.org; Fri, 06 May 2016 22:30:52 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1aynKl-0002zB-WC for rsgb_lf_group@blacksheep.org; Fri, 06 May 2016 22:30:51 +0100 Received: from smtpcmd10108.aruba.it ([62.149.156.108] helo=smtpcmd01229.aruba.it) by relay1.thorcom.net with esmtp (Exim 4.87) (envelope-from ) id 1aynKi-0001tJ-NZ for rsgb_lf_group@blacksheep.org; Fri, 06 May 2016 22:30:50 +0100 Received: from ik0vve.net ([62.149.158.90]) by smtpcmd10.ad.aruba.it with bizsmtp id r9Wm1s00L1xJdJu019Wmsi; Fri, 06 May 2016 23:30:47 +0200 Date: Fri, 6 May 2016 23:30:46 +0200 Message-Id: In-Reply-To: <57287047.7000303@posteo.de> References: =?iso-8859-1?q?=3CO6FK1F=244E758375A73045921482661B20E9AE5A=40ik0vve?= =?iso-8859-1?q?=2Enet=3E_=3CO6HQVJ=242F7891F4C3FDD2B2A991A8F465C21493?= =?iso-8859-1?q?=40ik0vve=2Enet=3E_=3C572619ED=2E1040402=40posteo=2Ede?= =?iso-8859-1?q?=3E_=3CO6K58G=24E1D0A268B18973C74C9FF0C89110836A=40ik0?= =?iso-8859-1?q?vve=2Enet=3E_=3C5727BB25=2E7020001=40posteo=2Ede=3E_?= =?iso-8859-1?q?=3CO6KSUW=24C45E4DCC152C42E90B3752DF6213F403=40ik0vve?= =?iso-8859-1?q?=2Enet=3E_=3C57287047=2E7000303=40posteo=2Ede=3E?= MIME-Version: 1.0 X-Sensitivity: 3 From: "Max IK0VVE" To: rsgb_lf_group@blacksheep.org X-XaM3-API-Version: V3(R2) X-SenderIP: 195.125.179.184 X-HELO-Warning: Remote host 62.149.156.108 (smtpcmd10108.aruba.it) used invalid HELO/EHLO smtpcmd01229.aruba.it - verification failed X-Scan-Signature: c1dcf088149efa0360827745859da381 Subject: Re: LF: testing VLF grabber Content-Type: multipart/alternative; boundary="_=__=_XaM3_.1462570246.2A.268623.42.20240.52.42.007.711791195" 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 X-Scanned-By: MIMEDefang 2.56 on 10.1.3.11 Status: O X-Status: X-Keywords: X-UID: 8012 --_=__=_XaM3_.1462570246.2A.268623.42.20240.52.42.007.711791195 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Stefan, all,=0AI do not have time to reach you that you already run away = to lower frequencies, HI.=0A=0A=0AI passed the last nights to try to disc= ipline my audio board with my 1pps GPS... nothing to do, I've tried all, = levels, phases, etc... I followed the Wolf's tutorial without success. I = suppose duty cycle is to low. I'm waiting for a new GPS so I'll try with = that or in the worst case with an OCXO+GPS 10khz.=0ASo only for test now = I'm pointing to German LF station DHO. Inserted BP and NB and moved to ab= out 100uHz the resolution of the grabber.=0A=0A=0ATomorrow a little trip,= not so far, to an Ham friend to listen if his zone is quieter than where= I live.=0A=0A=0AI'm interested to your Raspberry Pi remote system, can w= e get more informations?=0A=0A=0AThanks, 73, Max IK0VVE=0A=0A=0A=0A=0A___= ___________________________=C2=A0...here some of my HAM Radio projects...= SkyGeM RotatorAntennaDinamicaRCR-DX=0Awww.ik0vve.net=0A=0A=0ADa: owner-rs= gb_lf_group@blacksheep.org=0AA: rsgb_lf_group@blacksheep.org=0ACc: =0ADat= a: Tue, 03 May 2016 11:32:55 +0200=0AOggetto: Re: LF: testing VLF grabber= =0A=0A=0A=0A=0A=0A =0A=0A=0AHello Max,=0A=0A=0A=0APerfect. A nice progre= s!=0A=0A=0A=0AAm 03.05.2016 02:47, schrieb Max IK0VVE:=0A=0A =0A A perf= ect place could be the remote station of RCR-DX in monte=0ARipoli near Ti= voli (http://www.rcr-dx.eu/r-c-r-.html=C2=A0JN61JW)=0Ainternet connection= 50Mbps UP/DW! But it is not so close to my home and=0AI need an hour and= half or more to reach this place, if any problem=0Aoccur I could spend a= day to solve it! So for now I would see some=0Aplace nearby.=C2=A0 =0A=0A= =0A =0A=0AYes, a local site in just a few km distance is a very nice t= hing! And=0Ait may be better to have your own site, without any neighbour= s who=0Acould run a noisy power supply. When it's all your, then you can=0A= remove, replace, modify any QRM sources without discussions and=0Acomprom= ises!=0A=0ADo you also plan to run it with solar power? My system has no = problems=0Aany more since the end of February. And in winther there were = a few=0Athings running sub-optimal since the project was very new to that= time.=0A=0A=0A=0A=0A =0A =0A =0A=0A =0A Rick (IW4DXW) and=0ADom (IZ= 7SLZ) are each about 680 km far from me, the first to North and=0Athe sec= ond to south east.=0A =0A =0A=0AOh, that's very far. I rather expected = something like 20 km.=0A=0A=0A =0A =0A I know Rick is transmitting in = these hours.=0A =0A =0A=0AHmm, he doesn't tell us.=0A=0A=0A =0A =0A = =0A=0A =0A Yesterday I've=0Achenged the RX antenna from 60 wires loop t= o the TX (un-tuned) antenna=0Aof 630m, I've seen signals growing all over= the band. =0A =0A =0A=0AWhat does that mean? An overloaded RX? With su= ch a large antenna on the=0Asoundcard you will need a low pass filter. Si= mple RC chains would work=0Awell. Maybe 2x 10kOhm + 1nF.=0A=0A=0A =0A =0A= So also this could=0Abe a point of discussion for the next remote stati= on. May a single turn=0Aloop antenna be good also for me?=0A =0A =0A=0A= Yes sure. These days i am very convinced from loops. =0A=0AIf you also wa= nt to use a Raspberry Pi for remote controlling the=0Asystem, you can eas= ily use some mono stabile relays to switch between=0Adifferent antennas, = maybe 2 loops and an E field antenna.=0A=0A=0A=0A73, all the best=0A=0ASt= efan=0A=0A=0A =0A =0A =0A=0A =0A I'll keep the list=0Aupdated about = my grabbers.=0A =0A=0A =0A Thank and 73, Max IK0VVE=0A =0A=0A =0A =0A= =0A=0A=0A --_=__=_XaM3_.1462570246.2A.268623.42.20240.52.42.007.711791195 Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: quoted-printable
Stefan, all,

I do not have time to reach you that= you already run away to lower frequencies, HI.

= I passed the last nights to try to discipline my audio board with my 1pps= GPS... nothing to do, I've tried all, levels, phases, etc... I followed = the Wolf's tutorial without success. I suppose duty cycle is to low. I'm = waiting for a new GPS so I'll try with that or in the worst case with an = OCXO+GPS 10khz.
So only for test now I'm pointing to Germ= an LF station DHO. Inserted BP and NB and moved to about 100uHz the resol= ution of the grabber.

Tomorrow a little trip, no= t so far, to an Ham friend to listen if his zone is quieter than where I = live.

I'm interested to your Raspberry Pi remote= system, can we get more informations?

Thanks, 7= 3, Max IK0VVE


_= _____________________________

 
...here some of my = HAM Radio projects...
=



=0A
Da: owner-rsgb_lf_group@blacksheep.org<= /span>
=0A
A: rsgb_lf_group@blacksheep.org=0A
Cc:
=0A
Data: Tue, 03 Ma= y 2016 11:32:55 +0200
=0A
Oggetto: Re: LF: tes= ting VLF grabber
=0A
=0A=0A=0A=0A =0A=0A=0AHello Max,
= =0A
=0APerfect. A nice progres!
=0A
=0AAm 03.05.2016 02:47, schr= ieb Max IK0VVE:=0A
=0A
=0A
A perfect place c= ould be the remote station of RCR-DX in monte=0ARipoli near Tivoli (http://www.rcr-= dx.eu/r-c-r-.html JN61JW)=0Ainternet connection 50Mbps UP/DW! Bu= t it is not so close to my home and=0AI need an hour and half or more to = reach this place, if any problem=0Aoccur I could spend a day to solve it!= So for now I would see some=0Aplace nearby. 
=0A
=0A
=0A=0AYes, a local site in just a few km distance is a very nice thing! And= =0Ait may be better to have your own site, without any neighbours who=0Ac= ould run a noisy power supply. When it's all your, then you can=0Aremove,= replace, modify any QRM sources without discussions and=0Acompromises!=0ADo you also plan to run it with solar power? My system has no proble= ms=0Aany more since the end of February. And in winther there were a few=0A= things running sub-optimal since the project was very new to that time.=0A
=0A
=0A
=0A
=0A

=0A
=0A
Rick (IW4DXW) and=0ADom (IZ7SLZ) a= re each about 680 km far from me, the first to North and=0Athe second to = south east.
=0A
=0A
=0A
=0AOh, that= 's very far. I rather expected something like 20 km.
=0A
=0A
=0A
=0A
I know Rick is transmitting in these ho= urs.
=0A
=0A
=0A
=0AHmm, he doesn't tell u= s.
=0A
=0A
=0A
=0A

=0A
=0A
Yesterday I've=0Achenged the RX ante= nna from 60 wires loop to the TX (un-tuned) antenna=0Aof 630m, I've seen = signals growing all over the band.
=0A
=0A
=0A=
=0AWhat does that mean? An overloaded RX? With such a large = antenna on the=0Asoundcard you will need a low pass filter. Simple RC cha= ins would work=0Awell. Maybe 2x 10kOhm + 1nF.
=0A
=0A =
=0A
=0A
So also this could=0Abe a point of discussion for the next remote statio= n. May a single turn=0Aloop antenna be good also for me?
=0A =
=0A
=0A
=0AYes sure. These days i am very convi= nced from loops.
=0AIf you also want to use a Raspberry Pi for remote= controlling the=0Asystem, you can easily use some mono stabile relays to= switch between=0Adifferent antennas, maybe 2 loops and an E field antenn= a.
=0A
=0A73, all the best
=0AStefan
=0A
=0A =
=0A
=0A

=0A
=0A
I'll keep the list=0Aupdated about my grabbers.
=0A <= div>
=0A
= =0A
Thank and 73, Max IK0VVE
=0A
=0A
=0A
=0A= =0A=0A=0A
--_=__=_XaM3_.1462570246.2A.268623.42.20240.52.42.007.711791195--