Return-Path: Received: from mtain-dk11.r1000.mx.aol.com (mtain-dk11.r1000.mx.aol.com [172.29.180.15]) by air-dd08.mail.aol.com (v129.4) with ESMTP id MAILINDD082-86364d45c9083dd; Sun, 30 Jan 2011 15:24:40 -0500 Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-dk11.r1000.mx.aol.com (Internet Inbound) with ESMTP id D452A380000BC; Sun, 30 Jan 2011 15:24:38 -0500 (EST) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1PjdoT-0003bI-FA for rs_out_1@blacksheep.org; Sun, 30 Jan 2011 20:23:57 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1PjdoS-0003b9-Ny for rsgb_lf_group@blacksheep.org; Sun, 30 Jan 2011 20:23:56 +0000 Received: from cavuit02.kulnet.kuleuven.be ([134.58.240.44]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1PjdoQ-0006W0-Ko for rsgb_lf_group@blacksheep.org; Sun, 30 Jan 2011 20:23:56 +0000 Received: from smtps01.kuleuven.be (smtpshost01.kulnet.kuleuven.be [134.58.240.74]) by cavuit02.kulnet.kuleuven.be (Postfix) with ESMTP id 70C7A75A3C9 for ; Sun, 30 Jan 2011 21:23:47 +0100 (CET) Received: from ICTS-S-HUB-N1.luna.kuleuven.be (icts-s-hub-n1.luna.kuleuven.be [10.112.9.11]) by smtps01.kuleuven.be (Postfix) with ESMTP id 4F89431E702 for ; Sun, 30 Jan 2011 21:23:47 +0100 (CET) Received: from ICTS-S-EXC2-CA.luna.kuleuven.be ([10.112.11.13]) by ICTS-S-HUB-N1.luna.kuleuven.be ([10.112.9.11]) with mapi; Sun, 30 Jan 2011 21:23:47 +0100 X-Kuleuven: This mail passed the K.U.Leuven mailcluster From: Rik Strobbe To: "rsgb_lf_group@blacksheep.org" Date: Sun, 30 Jan 2011 21:21:58 +0100 Thread-Topic: LF: RE: Re: Re: HE3OM Thread-Index: AcvAtL1DfuAXnhxfSpiJKVxsZ8XO2AABpuKl Message-ID: References: <16BC8B3CA8672445BC2A29B4C14A26D4379E7C02F9@exlnmb01.eur.nsroot.net> <54D1BCF286C54039A0EA1878C6B72CB5@JimPC> <7A02B05C275A4E3EB13131969132DFD5@PCFausto> <4D458E7C.80105@iup.uni-heidelberg.de> <00aa01cbc0b3$38a6b700$0401a8c0@xphd97xgq27nyf>, In-Reply-To: Accept-Language: nl-NL, nl-BE Content-Language: nl-BE X-MS-Has-Attach: X-MS-TNEF-Correlator: acceptlanguage: nl-NL, nl-BE MIME-Version: 1.0 X-KULeuven-Information: Katholieke Universiteit Leuven X-KULeuven-Scanned: Found to be clean X-KULeuven-Envelope-From: rik.strobbe@fys.kuleuven.be X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,HTML_MESSAGE=0.001 Subject: RE: LF: RE: Re: Re: HE3OM Content-Type: multipart/alternative; boundary="_000_BF4A524700075746A6467658DFC7102C88715AEB11ICTSSEXC2CAlu_" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.0 required=5.0 tests=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 x-aol-global-disposition: G x-aol-sid: 3039ac1db40f4d45c9061302 X-AOL-IP: 195.171.43.25 X-Mailer: Unknown (No Version) --_000_BF4A524700075746A6467658DFC7102C88715AEB11ICTSSEXC2CAlu_ Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Hello Toni, if you want to use a big antenna as RX antenna sufficient attenuation betw= een antenna and RX is essential. For the 125m tower it might be 40dB or more. 73, Rik ON7YD - OR7T ________________________________ Van: owner-rsgb_lf_group@blacksheep.org [owner-rsgb_lf_group@blacksheep.or= g] namens Anton B=E4rtschi [hb9asb@gmail.com] Verzonden: zondag 30 januari 2011 20:32 Aan: rsgb_lf_group@blacksheep.org Onderwerp: Re: LF: RE: Re: Re: HE3OM An hour ago I've sent this report to the LF group, but it did not appear= on the reflector: Hello LF friends and many thanks for your patience, we are still in a learning process and= testing phase. Today we had several problems. A broken Transmitter and ho= t capacitors, bad reception on LF and a strange receiving situation on 80= and 40m. plus some visitors, asking silly questions and touching critical= parts, hi. But so far nobody got burnt. * The broken TX: At the beginning we had to use low power. Then we fixe= d a faulty relay and could run the TX at full power, as some of you certai= nly remarked. * The hot capacitors: The mast stands isolated from ground, but one leg= is connected to ground via a huge coil (Choke). The inductance of this co= il is far too low for 137khz. So we put some capacitors in parallel to cre= ate a resonant circuit on 137kHz. The brown Mica capacitors we used, got= very hot and the SWR deteriorated. Now we deployed a huge variable capaci= tor from the old MF transmitter. * Bad reception on LF: We used the transmitting antenna, a 125m free st= anding tower, also for receiving. Location is low noise, but this is proba= bly not the best solution. we will try to use a separate antenna for the= RX and next time I will bring another receiver to the site (1h driving fr= om my QTH), which should be better (Icom IC-756ProIII). I heard stations= calling in the noise, but it was impossible to decode them, despite 50Hz= BW. * Strange receiving situation on 40&80. Strong stations on the band (co= ntest), but the stations calling us, very, very weak. Now we improved the= receiving antenna and moved it away from the tower. Next time, cross band= should be easier. We will come back soon and we will further improve the station. Especially= the RX situation. We still have to learn a lot. HE3OM will be active unti= l end of February. So everybody should get his chance. 73 de Toni PS. See pictures! 2011/1/30 mal hamilton > PA0A was one of the stations calling HE3OM and got no reply, not heard..= I think Toni has a serious RX problem, unfortunately no feed back to indicat= e what is going on. de mal/g3kev ----- Original Message ----- From: "Rik Strobbe" > To: > Sent: Sunday, January 30, 2011 6:43 PM Subject: RE: LF: RE: Re: Re: HE3OM Hello Stefan, Mal was at least 10 to 15dB weaker than usual (daytime signal). Normally= he is "head and shoulders" above the other UK stations and even most PA's - that are much closer - cannot compete, apart from PA0A. PA0A was at his usual strength, so I assume my RX/antenna was OK. I have no idea why G3KEV was rather weak today. Less power than usual or other antenna ? I observed HE3OM and his audience for about 30 minutes and coundn't notice any QSB (what is typical for combined surface wave / skywave propagation), so I assume all signals were surface wave. 73, Rik ON7YD - OR7T ________________________________________ Van: owner-rsgb_lf_group@blacksheep.org [owner-rsgb_lf_group@blacksheep.org] namens Stefan Sch=E4fer [schaefer@iup.uni-heidelberg.de] Verzonden: zondag 30 januari 2011 17:14 Aan: rsgb_lf_group@blacksheep.org Onderwerp: Re: LF: RE: Re: Re: HE3OM Hi Rik, I'm wondering. I've always thought Mal has a strong signal. Seems to be rather the usual power levels well below 1 W ERP. Anyway, at least he's well visible on my grabber, sometimes 30 dB above noise in QRSS-3. I seem to have a very sensitive grabber ;-) 73, Stefan/DK7FC Am 30.01.2011 14:56, schrieb Rik Strobbe: > Heard here : > HE3OM : abt. 40dB above noise > DF6NM : abt. 15dB above noise > G3KEV : abt. 5dB above noise > PA0A : abt.20dB above noise > > 73, Rik ON7YD - OR7T > ________________________________________ > Van: owner-rsgb_lf_group@blacksheep.org [owner-rsgb_lf_group@blacksheep.org] namens Fausto Coletti [faustocoletti@alice.it] > Verzonden: zondag 30 januari 2011 14:49 > Aan: rsgb_lf_group@blacksheep.org > Onderwerp: LF: Re: Re: HE3OM > > Hear HE3OM 579 in qso with DF6NM 529 > > Fausto IK4NMF > --_000_BF4A524700075746A6467658DFC7102C88715AEB11ICTSSEXC2CAlu_ Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Hello Toni,
 
if you want to use a big antenna as RX antenna sufficient= attenuation between antenna and RX is essential.
For th= e 125m tower it might be 40dB or more.
 
73, Rik  ON7YD - OR7T
 
Van: owner-rsgb_= lf_group@blacksheep.org [owner-rsgb_lf_group@blacksheep.org] namens Anton= B=E4rtschi [hb9asb@gmail.com]
Verzonden: zondag 30 januari 2011 20:32
Aan: rsgb_lf_group@blacksheep.org
Onderwerp: Re: LF: RE: Re: Re: HE3OM

An hour ago I've sent this report to the LF group, but it did not= appear on the reflector:

Hello LF friends
and many thanks for your patience, we are still in a learning process and= testing phase. Today we had several problems. A broken Transmitter and ho= t capacitors, bad reception on LF and a strange receiving situation on 80= and 40m. plus some visitors, asking silly questions and touching critical parts, hi. But so far nobody got bu= rnt.

  • The broken TX: At the beginning we had to use low power. Then we fixed= a faulty relay and could run the TX at full power, as some of you certain= ly remarked.
  • The hot capacitors: The mast stands isolated from ground, but one leg= is connected to ground via a huge coil (Choke). The inductance of this co= il is far too low for 137khz. So we put some capacitors in parallel to cre= ate a resonant circuit on 137kHz. The brown Mica capacitors we used, got very hot and the SWR deteriorated. Now= we deployed a huge variable capacitor from the old MF transmitter.
  • Bad reception on LF: We used the transmitting antenna, a 125m free sta= nding tower, also for receiving. Location is low noise, but this is probab= ly not the best solution. we will try to use a separate antenna for the RX= and next time I will bring another receiver to the site (1h driving from my QTH), which should be better (Ic= om IC-756ProIII). I heard stations calling in the noise, but it was imposs= ible to decode them, despite 50Hz BW.
  • Strange receiving situation on 40&80. Strong stations on the band= (contest), but the stations calling us, very, very weak. Now we improved= the receiving antenna and moved it away from the tower. Next time, cross= band should be easier.
We will come back soon and we will further improve the station. Especially= the RX situation. We still have to learn a lot. HE3OM will be active unti= l end of February. So everybody should get his chance.

73 de Toni

PS. See pictures!



2011/1/30 mal hamilton <g3kevmal@talktalk.net>
PA0A was one of the stations calling HE3OM and got no reply, not heard..= I
think Toni has a serious RX problem, unfortunately no feed back to indicat= e
what is going on.

de mal/g3kev
----- Original Message -----
From: "Rik Strobbe" <Rik.Strobbe@fys.kuleuven.be>
To: <rsgb_lf_group@blac= ksheep.org>
Sent: Sunday, January 30, 2011 6:43 PM
Subject: RE: LF: RE: Re: Re: HE3OM


Hello Stefan,

Mal was at least 10 to 15dB weaker than usual (daytime signal). Normally= he
is "head and shoulders" above the other UK stations and even mos= t PA's -
that are much closer - cannot compete, apart from PA0A.
PA0A was at his usual strength, so I assume my RX/antenna was OK.
I have no idea why G3KEV was rather weak today. Less power than usual or other antenna ?
I observed HE3OM and his audience for about 30 minutes and coundn't notice=
any QSB (what is typical for combined surface wave / skywave propagation),=
so I assume all signals were surface wave.

73, Rik  ON7YD - OR7T

________________________________________
Van: owner-rsgb_lf_g= roup@blacksheep.org [owner-rsgb_lf_group@blacksheep.org]
namens Stefan Sch=E4fer [schaefer@iup.uni-heidelberg.de]
Verzonden: zondag 30 januari 2011 17:14
Aan: rsgb_lf_group@blacksh= eep.org
Onderwerp: Re: LF: RE: Re: Re: HE3OM

Hi Rik,

I'm wondering. I've always thought Mal has a strong signal. Seems to be rather the usual power levels well below 1 W ERP. Anyway, at least he's well visible on my grabber, sometimes 30 dB above noise in QRSS-3. I
seem to have a very sensitive grabber ;-)

73, Stefan/DK7FC

Am 30.01.2011 14:56, schrieb Rik Strobbe:
> Heard here :
> HE3OM : abt. 40dB above noise
> DF6NM :  abt. 15dB above noise
> G3KEV : abt. 5dB above noise
> PA0A : abt.20dB above noise
>
> 73, Rik  ON7YD - OR7T
> ________________________________________
> Van: owner-rsgb= _lf_group@blacksheep.org
[owner-rsgb_lf_group= @blacksheep.org] namens Fausto Coletti
[faustocoletti@alice.it]
> Verzonden: zondag 30 januari 2011 14:49
> Aan: rsgb_lf_group@bl= acksheep.org
> Onderwerp: LF: Re: Re: HE3OM
>
> Hear HE3OM 579 in qso with DF6NM 529
>
> Fausto IK4NMF
>



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