Return-Path: Received: from mtain-dk11.r1000.mx.aol.com (mtain-dk11.r1000.mx.aol.com [172.29.180.15]) by air-mc07.mail.aol.com (v129.4) with ESMTP id MAILINMC072-a97c4d464d38356; Mon, 31 Jan 2011 00:48:40 -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 9C5CD38000082; Mon, 31 Jan 2011 00:48:38 -0500 (EST) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1Pjmc2-0000H3-IX for rs_out_1@blacksheep.org; Mon, 31 Jan 2011 05:47:42 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1Pjmc1-0000Gu-RT for rsgb_lf_group@blacksheep.org; Mon, 31 Jan 2011 05:47:41 +0000 Received: from mail-pw0-f43.google.com ([209.85.160.43]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1Pjmby-0000Kg-MY for rsgb_lf_group@blacksheep.org; Mon, 31 Jan 2011 05:47:41 +0000 Received: by pwj10 with SMTP id 10so952332pwj.16 for ; Sun, 30 Jan 2011 21:47:32 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:in-reply-to:references:date :message-id:subject:from:to:content-type; bh=4UCjIwrJfUqoACAL39PRbTsxFEcD7l2sOKBVjlmJ4/c=; b=HmOkNz7QWgRlgwHixpH0cecKtRRfSpBIaa4WcNsiyAqennZaVIG4YREjfTRXwfFX+3 WYNKvpDhlt/anY5mw+ncRI4VDSZYn1XSNvx62SZC11MXi+T4VtzC315xBIQF1u44p6hD ymiKhFn24V/XfFQ7/Hii9DUkBIW+aVaBWWrEc= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type; b=OsV3DdXGUDzhsUkBTqqpElQt4jQUHhZlSms6YGSyVSsIPtqV9pjcr6CTJrzH6vPVWV AIJlYSocAj8Bh4kxM4JXYfoFn2QD/0IVMrLwADYzAEpKKP/j5XLJ6MeAFUs9DZZ0WF7y UOUKDyH35XXM7kgo7umX74H0+QfKobd5wXf4U= MIME-Version: 1.0 Received: by 10.142.14.8 with SMTP id 8mr5633626wfn.83.1296452851887; Sun, 30 Jan 2011 21:47:31 -0800 (PST) Received: by 10.142.222.14 with HTTP; Sun, 30 Jan 2011 21:47:31 -0800 (PST) In-Reply-To: References: <16BC8B3CA8672445BC2A29B4C14A26D4379E7C02F9@exlnmb01.eur.nsroot.net> <54D1BCF286C54039A0EA1878C6B72CB5@JimPC> <7A02B05C275A4E3EB13131969132DFD5@PCFausto> <4D458E7C.80105@iup.uni-heidelberg.de> <00aa01cbc0b3$38a6b700$0401a8c0@xphd97xgq27nyf> Date: Mon, 31 Jan 2011 06:47:31 +0100 Message-ID: From: HB9ASB To: rsgb_lf_group@blacksheep.org DomainKey-Status: good (testing) 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=000e0cd17492b46e81049b1df3ef X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.5 required=5.0 tests=HTML_20_30,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 x-aol-global-disposition: G X-AOL-SCOLL-AUTHENTICATION: mail_rly_antispam_dkim-d292.1 ; domain : gmail.com DKIM : pass x-aol-sid: 3039ac1db40f4d464d363aed X-AOL-IP: 195.171.43.25 X-Mailer: Unknown (No Version) --000e0cd17492b46e81049b1df3ef Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Hi Rik We do have an attenuator, there is no overload of the receiver. The BW of the antenna is very narrow - a good sign! The problem is: we are a big crocodile. 73 de Toni 2011/1/30 Rik Strobbe > Hello Toni, > > if you want to use a big antenna as RX antenna sufficient attenuation > between 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.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 appe= ar > on the reflector: > * > Hello LF friends > and many thanks for your patience, we are still in a learning process an= d > testing phase. Today we had several problems. A broken Transmitter and= hot > capacitors, bad reception on LF and a strange receiving situation on 80= and > 40m. plus some visitors, asking silly questions and touching critical pa= rts, > hi. But so far nobody got burnt. > > > - 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 > certainly 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 thi= s coil > is far too low for 137khz. So we put some capacitors in parallel to= create a > resonant circuit on 137kHz. The brown Mica capacitors we used, got ve= ry 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 > standing tower, also for receiving. Location is low noise, but this= is > probably 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 dr= iving > from my QTH), which should be better (Icom IC-756ProIII). I heard sta= tions > 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 > (contest), but the stations calling us, very, very weak. Now we impro= ved 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. Especial= ly > the RX situation. We still have to learn a lot. HE3OM will be active unt= il > 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 >> indicate >> 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). Normall= y >> 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 not= ice >> any QSB (what is typical for combined surface wave / skywave propagatio= n), >> 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 >> > >> >> >> > --000e0cd17492b46e81049b1df3ef Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Hi Rik
We do have an attenuator, there is no overload of the receiver.= The BW of the antenna is very narrow - a good sign! The problem is: we ar= e a big crocodile.
73 de Toni

2011/1/= 30 Rik Strobbe <Rik.Strobbe@fys.kuleuven.be>
Hello Toni,
=A0
if you want to use=A0a big antenna=A0as RX antenna sufficient attenua= tion between antenna and RX is essential.
For th= e 125m tower it might be 40dB or more.
=A0
73, Rik=A0 ON7YD - OR7T
=A0
Van: owner-rsgb_lf= _group@blacksheep.org [owner-rsgb_lf_group@blacksheep.org] namens An= ton B=E4rtschi [hb9a= sb@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@blacksheep.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 no= tice
any QSB (what is typical for combined surface wave / skywave propagation),=
so I assume all signals were surface wave.

73, Rik =A0ON7YD - OR7T

________________________________________
Van: owner-rsgb_lf_group@blacksheep.org [owner-rsgb_lf_group@blacksheep.or= g]
namens Stefan Sch=E4fer [schaefer@iup.uni-heidelberg.de]
Verzonden: zondag 30 januari 2011 17:14
Aan: rsg= b_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 : =A0abt. 15dB above noise
> G3KEV : abt. 5dB above noise
> PA0A : abt.20dB above noise
>
> 73, Rik =A0ON7YD - OR7T
> ________________________________________
> Van: owner-rsgb_lf_group@blacksheep.org
[o= wner-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
>




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