Return-Path: X-Spam-DCC: paranoid 1182; Body=1 Fuz1=1 Fuz2=1 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 u7Q9aqpc026626 for ; Fri, 26 Aug 2016 11:36:52 +0200 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1bdDSi-00055Q-RS for rs_out_1@blacksheep.org; Fri, 26 Aug 2016 10:30:08 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1bdDSi-00055H-0v for rsgb_lf_group@blacksheep.org; Fri, 26 Aug 2016 10:30:08 +0100 Received: from vigilant.es ([87.106.80.234] helo=mail.vigilant.es) by relay1.thorcom.net with esmtp (Exim 4.87) (envelope-from ) id 1bdDSd-0004x4-B5 for rsgb_lf_group@blacksheep.org; Fri, 26 Aug 2016 10:30:06 +0100 Received: from servigilant.vigilant.local ([87.216.178.132]) by vigilant.es with MailEnable ESMTP; Fri, 26 Aug 2016 11:29:34 +0200 Received: from servigilant.vigilant.local ([fe80::c40d:8140:d722:5448]) by servigilant.vigilant.local ([fe80::c40d:8140:d722:5448%16]) with mapi id 14.03.0123.003; Fri, 26 Aug 2016 11:29:42 +0200 From: =?iso-8859-1?Q?VIGILANT_Luis_Fern=E1ndez?= To: "rsgb_lf_group@blacksheep.org" Thread-Topic: Re: LF: sensors that predict when the Northern Lights will be visible in the UK. Thread-Index: AQHR/tTEGNyoKVoK0k+9AjmcHxc2vqBZ10QAgAEi75A= Date: Fri, 26 Aug 2016 09:29:40 +0000 Message-ID: <579355A36AEE9D4FA555C45D556003AB5D7D1B19@servigilant.vigilant.local> In-Reply-To: Accept-Language: es-ES, en-US Content-Language: es-ES X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [192.168.0.2] MIME-Version: 1.0 X-Scan-Signature: a28b1b2438ad79e62076fe9eb1ceecab Subject: RE: Re: LF: sensors that predict when the Northern Lights will be visible in the UK. Content-Type: multipart/alternative; boundary="_000_579355A36AEE9D4FA555C45D556003AB5D7D1B19servigilantvigi_" 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: 8630 --_000_579355A36AEE9D4FA555C45D556003AB5D7D1B19servigilantvigi_ Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable May be interesting to watch this video from Leif SM5BSZ He shows how Linrad NB can deal with that kind of interference https://youtu.be/5asxOcRDdXo Anyway I'm with you Max ;-) Or at least the lawnmower manufacturer could turn OFF the signal when the t= hing is NOT working and not keep it running permanent 73 de Luis EA5DOM ________________________________ De: owner-rsgb_lf_group@blacksheep.org [mailto:owner-rsgb_lf_group@blackshe= ep.org] En nombre de Max IK0VVE Enviado el: jueves, 25 de agosto de 2016 20:05 Para: rsgb_lf_group@blacksheep.org Asunto: LF: Re: LF: sensors that predict when the Northern Lights will be v= isible in the UK. Death to lawnmowers!! (..and to LED lights, plasma TV, microwaves oven, etc= ...) :( Max IK0VVE ______________________________ ...here some of my HAM Radio projects... SkyGeM Rotator AntennaDinamica RCR-DX www.ik0vve.net Da: owner-rsgb_lf_group@blacksheep.org A: rsgb_lf_group@blacksheep.org Cc: Data: Thu, 25 Aug 2016 14:19:37 +0100 Oggetto: LF: sensors that predict when the Northern Lights will be visible = in the UK. 73-G, )) A lawnmower has been blamed for wrongly triggering sensors that predict whe= n the Northern Lights will be visible in the UK. A red alert issued via the Aurora Watch mailing list was withdrawn after sensor r= eadings were found to be "spurious". An investigation revealed a lawnmower had got too close to one sensor, trig= gering a "massive spike" in data. Aurora Watch said it was looking into ways to avoid the incident being repe= ated. The bogus alert was issued during the afternoon of 23 August, after a magne= tometer at the University of Lancaster recorded a surge in geomagnetic acti= vity. Trim grass Aurora Watch is run by scientists at the university and takes readings from= lots of magnetometers to work out when the aurora borealis will be visible= across Britain. The project draws on magnetometers in Lancaster, Aberdeen, the Faroe Island= s and further field. The alert was withdrawn four hours after being released as it emerged only = one sensor had recorded the spike in activity. A later update posted to the Aurora Watch webpage said an investigation had= revealed that a groundskeeper using a "sit-on mower" to trim grass had bee= n driving too close to the sensor, prompting the spike. "We'll work with the facilities team to try and avoid an incident such as t= his occurring in the future," said the scientists. They explained any metal placed on the instrument or machinery operating ne= arby could trick it into recording more activity than was actually present. Readings from the Lancaster sensor were not typically used to trigger alert= s, they said, but problems with the main sensor in Aberdeen on 23 August me= ant it had become the lead monitor. --_000_579355A36AEE9D4FA555C45D556003AB5D7D1B19servigilantvigi_ Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
May be interesting to watch this = video from Leif SM5BSZ
He shows how Linrad NB can deal w= ith that kind of interference
 
 
Anyway I'm with you Max ;-)
Or at least the lawnmower manufac= turer could turn OFF the signal when the thing is NOT working and not keep = it running permanent
 
73 de Luis
EA5DOM

De: owner-rsgb_lf_group@blacksheep.= org [mailto:owner-rsgb_lf_group@blacksheep.org] En nombre de Max IK0VVE
Enviado el: jueves, 25 de agosto de 2016 20:05
Para: rsgb_lf_group@blacksheep.org
Asunto: LF: Re: LF: sensors that predict when the Northern Lights wi= ll be visible in the UK.


Death to lawnmowers!! (..and to LED lights= , plasma TV, microwaves oven, etc...) :(

Max IK0VVE 


______________________________

 
...here some of my HAM Radio projects...
RCR-DX



Da= : owner-rsgb_lf_group@blacksheep.org
A<= /span>: rsgb_lf_group@blacksheep.org
Cc= :
Da= ta: Thu, 25 Aug 2016 14:19:37 +0100
Og= getto: LF: sensors that predict when the Northern Lights= will be visible in the UK.

73-G, ))

A lawnmower has been blamed for wrongly triggering sensors that predict whe= n the Northern Lights will be visible in the UK.

A red alert issued via the Aurora Watch mailing list was withdrawn=  after sensor readings were found to be "spurious".

An investigation revealed a lawnmower had got too close to one sensor, trig= gering a "massive spike" in data.

Aurora Watch said it was looking into ways to avoid the incident being repe= ated.

The bogus alert was issued during the afternoon of 23 August, after a magne= tometer at the University of Lancaster recorded a surge in geomagnetic acti= vity.

Trim grass

Aurora Watch is run by scientists at the university and takes readings from= lots of magnetometers to work out when the aurora borealis will be visible= across Britain.

The project draws on magnetometers in Lancaster, Aberdeen, the Faroe Island= s and further field.

The alert was withdrawn four hours after being released as it emerged only = one sensor had recorded the spike in activity.

A later update posted to the Aurora Watch webpage said an investigation had= revealed that a groundskeeper using a "sit-on mower" to trim gra= ss had been driving too close to the sensor, prompting the spike.

"We'll work with the facilities team to try and avoid an incident such= as this occurring in the future," said the scientists.

They explained any metal placed on the instrument or machinery operating ne= arby could trick it into recording more activity than was actually present.=

Readings from the Lancaster sensor were not typically used to trigger alert= s, they said, but problems with the main sensor in Aberdeen on 23 August me= ant it had become the lead monitor.

--_000_579355A36AEE9D4FA555C45D556003AB5D7D1B19servigilantvigi_--