Return-Path: Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by klubnl.pl (8.14.4/8.14.4/Debian-8+deb8u2) with ESMTP id wANDCJJn014645 for ; Fri, 23 Nov 2018 14:12:25 +0100 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1gQBBB-0007RP-9e for rs_out_1@blacksheep.org; Fri, 23 Nov 2018 13:07:29 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1gQBBA-0007RG-Ta for rsgb_lf_group@blacksheep.org; Fri, 23 Nov 2018 13:07:28 +0000 Received: from out1-22.antispamcloud.com ([185.201.16.22]) by relay1.thorcom.net with esmtps (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.91_59-0488984) (envelope-from ) id 1gQBB5-0000WE-VM for rsgb_lf_group@blacksheep.org; Fri, 23 Nov 2018 13:07:27 +0000 Received: from [85.60.35.36] (helo=servigilant.vigilant.es) by mx42.antispamcloud.com with esmtpsa (TLSv1:ECDHE-RSA-AES128-SHA:128) (Exim 4.89) (envelope-from ) id 1gQBAn-0000pt-FP for rsgb_lf_group@blacksheep.org; Fri, 23 Nov 2018 14:07:20 +0100 Received: from servigilant.vigilant.local ([fe80::c40d:8140:d722:5448]) by servigilant.vigilant.local ([fe80::c40d:8140:d722:5448%13]) with mapi id 14.03.0123.003; Fri, 23 Nov 2018 14:06:30 +0100 From: =?iso-8859-1?Q?VIGILANT_Luis_Fern=E1ndez?= To: "rsgb_lf_group@blacksheep.org" Thread-Topic: Carrier transmission at 80 Hz Thread-Index: AQHUgw7Oj8+sHtPJT06DLoP25Mb2gaVdUIAw Date: Fri, 23 Nov 2018 13:06:30 +0000 Message-ID: <6DB8451D7F3D3947A5918808A59621EA14E215A9@servigilant.vigilant.local> References: <5BE0C0CE.10008@posteo.de> <5BE19D5E.7000408@posteo.de> <5BF7C6B4.8090104@posteo.de> In-Reply-To: <5BF7C6B4.8090104@posteo.de> Accept-Language: es-ES, en-US Content-Language: es-ES X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [192.168.0.22] MIME-Version: 1.0 X-Originating-IP: 85.60.35.36 X-MailAssure-Domain: vigilant.es X-MailAssure-Username: smtpsolarwinds Authentication-Results: antispamcloud.com; auth=pass (login) smtp.auth=smtpsolarwinds@vigilant.es X-MailAssure-Outgoing-Class: ham X-MailAssure-Outgoing-Evidence: Combined (0.29) X-Recommended-Action: accept X-Filter-ID: EX5BVjFpneJeBchSMxfU5t7bqQz8dSP5saXpKnH1adR602E9L7XzfQH6nu9C/Fh9KJzpNe6xgvOx q3u0UDjvOw5j2C7YKailx2Uop+U2Gs8m9etQhNgzEtWqBtUXOJSHVTGbEWWnE2yTxqfzAQugcTIO bYCxP/5072OmzNzPcjhIeZjZv1oz6oWKgngYgisM8DZztKGImYzpwtV2u5AjtvHcddFAPKLnBT/J ZzTASef70WuzEeIYESIPDdUJWOBuPxO0jJAHsPdj1H6RNuBO60m5NOzFyb6byQp3KrGHwAAYIFcZ dV9FymB4yh09XRoOG3gNhjWgIn9EMhhACXfJHpfs332vkt6Wl7MpBkXrMhPAfqmtGTQeo8POuZmc DwPakUDJ/iZViSww8yJJBeO40iObofOmVZ8jq2JCzFshGkbfX8TdqEXkwxwMjsp2mNApg3sUhVGe a1GIQIzAQSWhryERbInMiTBIUBbQ/Dy6Ip4lprBQcgaFwLgmRMoOfSzP/a1CaxG1QPOAWVbHDE16 W6bsVyUy+Ne72iVquZJPo3LonV+E7OMXRvgtdyMlnmWiVUwjP5IP71XtCA0UgxFoZL8uzbwG8RIG UrCPh0i2tHHJpi50MpiVe9WBiAiV11BK61OVLoP1Q6wnb/hRIZlIfLEaHGHDukmsgviQSXpmsN22 Tb4Tdy0JXF1Ju3PuLCUkNq5V4WAtJZXC2qV+0qJ7btpCrl2Mn9lqfGH7Y1IXKBTvwMzcw9YF/gUo mGIHaLAhPAlbDjazCbhs7qBpykynMklGXe6NtxCucctsAhNAxppieQn/z8UtFOqwH/iKkWNT4Qw/ si0LtfynHXJe8jzMLqSnt0bc9wObVlKbHN8OtHofiwMSNhsPEiy5Xyanx+eL/lmcqrp+ZgP1Lb5j QzN+1Q6adtB2Oe88dNhukQEZwoi5Rv4UBMc5RaTDZvGKfpBOXyvnBLFBPBorebXvRPde/zEvuGsl KTrRIXcXpFg5ivY= X-Report-Abuse-To: spam@quarantine3.antispamcloud.com X-Spam-Score: 1.8 (+) X-Spam-Report: Spam detection software, running on the system "relay1.thorcom.net", has NOT identified this incoming email as spam. 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 XLF Great stuff Stefan. I save it to show to a neighbour, just in case they say I'm crazy ;-) I assume you are not using a resonant antenna at 80Hz, right ? So, no coil. Just the inverted L element and ground at the HV transformer secondary ? Content analysis details: (1.8 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -0.7 RCVD_IN_DNSWL_LOW RBL: Sender listed at http://www.dnswl.org/, low trust [185.201.16.22 listed in list.dnswl.org] 1.0 SPF_SOFTFAIL SPF: sender does not match SPF record (softfail) 0.0 HTML_MESSAGE BODY: HTML included in message 0.0 T_KAM_HTML_FONT_INVALID BODY: Test for Invalidly Named or Formatted Colors in HTML 1.5 RCVD_IN_SORBS_WEB RBL: SORBS: sender is an abusable web server [85.60.35.36 listed in dnsbl.sorbs.net] X-Scan-Signature: 052e5a7ab87161a07560b72babff3441 Subject: LF: RE: Carrier transmission at 80 Hz Content-Type: multipart/alternative; boundary="_000_6DB8451D7F3D3947A5918808A59621EA14E215A9servigilantvigi_" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.2 required=5.0 tests=HTML_50_60,HTML_MESSAGE, TO_ADDRESS_EQ_REAL 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 --_000_6DB8451D7F3D3947A5918808A59621EA14E215A9servigilantvigi_ Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Hi XLF Great stuff Stefan. I save it to show to a neighbour, just in case they say= I'm crazy ;-) I assume you are not using a resonant antenna at 80Hz, right ? So, no coil. Just the inverted L element and ground at the HV transformer s= econdary ? Mmmm. I have a similar device around which was the spark generator of an oi= l heating boiler Wait for you at DC 73 de Luis EA5DOM De: owner-rsgb_lf_group@blacksheep.org [mailto:owner-rsgb_lf_group@blackshe= ep.org] En nombre de DK7FC Enviado el: viernes, 23 de noviembre de 2018 10:22 Para: rsgb_lf_group@blacksheep.org Asunto: SLF: Carrier transmission at 80 Hz Dear SLF friends, A new step forward towards DC: Since yesterday 22:30 UTC i'm TXing a carrie= r at 80.005 Hz. That's the 3750 km band, where the far field begins at a di= stance of 598 km. The antenna voltage is just 5 kV and i'm getting 1.2 mA antenna current, gi= ving an ERP of 20 fW (2E-14 W). The voltage is even higher than in my recent experiment on 270 Hz, anyway t= he S/N is lower, indicating that my RX lacks of sensitivity. Indeed this ex= periment helps to estimate the lack of sensitivity. Looks like i'm missing = about 10 dB on that frequency. Anyway the signal is making the path of 3.5 = km to my tree grabber, as usual shown at http://www.iup.uni-heidelberg.de/s= chaefer_vlf/DK7FC_VLF_Grabber2.html. Not a big distance but still well beyo= nd most garden fences! The signal leaves a barely visible trace in the ZEVS window which is runnin= g at 3.8 mHz FFT bin witdh. Unfortunately ZEVS is off the air since a week = or so. actually i wanted to transmit side by side with ZEVS, of course a bi= t deeper even. >From a quiet period at night, i calculated the SNR of a 1 hour carrier peri= od using vlfrx-tools: carrier S/N: 16.83 dB in 277.8 uHz, -18.73 dB in 1Hz For the crazy homebrewers i'd like to share that website where i ordered th= e HV-transformer, http://www.hosin.de/Specials/HV-Trafo/hv-trafo.html A nig= htmare for all safety-fetishists! For the completeness it must be mentioned= together with that page: http://kurts-werkstatt.de/hv-trafo.htm 73, Stefan --_000_6DB8451D7F3D3947A5918808A59621EA14E215A9servigilantvigi_ Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

Hi XLF

 = ;

Great stuff Stefan. I save it to show to a neighbour, just in case the= y say I’m crazy ;-)

 

I assume you are not using a resonant antenna at 80Hz, right ?

So, no coil. Just the inverted L element and ground at the HV transfor= mer secondary ?

 

Mmmm. I have a similar device around which was the spark generator of = an oil heating boiler

 

Wait for you at DC

 

73 de Luis

EA5DOM

 

De: owner-rsgb_lf_group@blacksheep.org [mailto:owner-rsgb_lf_group@blacksheep= .org] En nombre de DK7FC
Enviado el: viernes, 23 de noviembre de 2018 10:22
Para: rsgb_lf_group@blacksheep.org
Asunto: SLF: Carrier transmission at 80 Hz

 

Dear SLF friends,

A new step forward towards DC: Since yesterday 22:30 UTC i'm TXing a carrie= r at 80.005 Hz. That's the 3750 km band, where the far field begins a= t a distance of 598 km.

The antenna voltage is just 5 kV and i'm getting 1.2 mA antenna current, gi= ving an ERP of  20 fW (2E-14 W).

The voltage is even higher than in my recent experiment on 270 Hz, anyway t= he S/N is lower, indicating that my RX lacks of sensitivity. Indeed this ex= periment helps to estimate the lack of sensitivity. Looks like i'm missing = about 10 dB on that frequency. Anyway the signal is making the path of 3.5 km to my tree grabber, as usual shown= at http://www.iup.uni-heidelberg.de/schaefer_vlf/DK7FC_VLF_Grabber2.html. = Not a big distance but still well beyond most garden fences!
The signal leaves a barely visible trace in the ZEVS window which is runnin= g at 3.8 mHz FFT bin witdh. Unfortunately ZEVS is off the air since a week = or so. actually i wanted to transmit side by side with ZEVS, of course a bi= t deeper even.

>From a quiet period at night, i calculated the SNR of a 1 hour carrier peri= od using vlfrx-tools: carrier S/N: 16.83 dB in 277.8 uHz, -18.73 dB in 1Hz

For the crazy homebrewers i'd like to share that website where i ordered th= e HV-transformer, http://www.= hosin.de/Specials/HV-Trafo/hv-trafo.html A nightmare for all safety-fet= ishists! For the completeness it must be mentioned together with that page: http://kurts-werkstatt.d= e/hv-trafo.htm

73, Stefan

--_000_6DB8451D7F3D3947A5918808A59621EA14E215A9servigilantvigi_--