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[195.171.43.25]) by mx.google.com with ESMTP id ux10si1687228wjc.81.2013.08.04.05.58.06 for ; Sun, 04 Aug 2013 05:58:07 -0700 (PDT) Received-SPF: neutral (google.com: 195.171.43.25 is neither permitted nor denied by best guess record for domain of owner-rsgb_lf_group@blacksheep.org) client-ip=195.171.43.25; Authentication-Results: mx.google.com; spf=neutral (google.com: 195.171.43.25 is neither permitted nor denied by best guess record for domain of owner-rsgb_lf_group@blacksheep.org) smtp.mail=owner-rsgb_lf_group@blacksheep.org Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1V5x5H-0000nO-KO for rs_out_1@blacksheep.org; Sun, 04 Aug 2013 13:06:51 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1V5x5H-0000nF-1i for rsgb_lf_group@blacksheep.org; Sun, 04 Aug 2013 13:06:51 +0100 Received: from smtp3-g21.free.fr ([212.27.42.3]) by relay1.thorcom.net with esmtp (Exim 4.77) (envelope-from ) id 1V5x5D-00051z-SW for rsgb_lf_group@blacksheep.org; Sun, 04 Aug 2013 13:06:49 +0100 Received: from F6CNIAndyHP (unknown [83.153.241.20]) by smtp3-g21.free.fr (Postfix) with SMTP id E7071A62A4; Sun, 4 Aug 2013 14:06:40 +0200 (CEST) Message-ID: <1F4A3FF9EAC74E97BBA5A1FAEE062BF0@F6CNIAndyHP> From: =?iso-8859-1?Q?Andre_Guy=E9?= To: References: <51FDA127.80500@iup.uni-heidelberg.de> <51FE3D6F.5040001@iup.uni-heidelberg.de> In-Reply-To: <51FE3D6F.5040001@iup.uni-heidelberg.de> Date: Sun, 4 Aug 2013 14:06:38 +0200 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal Importance: Normal X-Mailer: Microsoft Windows Live Mail 15.4.3508.1109 X-MimeOLE: Produced By Microsoft MimeOLE V15.4.3508.1109 X-Antivirus: avast! (VPS 130803-1, 03/08/2013), Outbound message X-Antivirus-Status: Clean X-Spam-Score: 0.0 (/) X-Spam-Report: Spam detection software, running on the system "relay1.thorcom.net", has identified this incoming email as possible spam. The original message has been attached to this so you can view it (if it isn't spam) or label similar future email. If you have any questions, see the administrator of that system for details. Content preview: It is interesting to remember the UK 73 kHz band experimentation which began april 1996. About the record : have a look here : http://www.eham.net/articles/2883 On my side my first QSO x band was 28/03/1998 with Peter G3LDO. On normal CW, he was transmitting on 73.2 kHz and I gave to him 579 at 340 km. [...] Content analysis details: (0.0 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at http://www.dnswl.org/, no trust [212.27.42.3 listed in list.dnswl.org] 0.0 HTML_MESSAGE BODY: HTML included in message X-Scan-Signature: f45514038df04b1035abb1d5446da941 Subject: LF: Re: USA issued 68 to 76 kHz band with 10 W ERP Content-Type: multipart/alternative; boundary="----=_NextPart_000_000D_01CE911B.D67D1830" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.9 required=5.0 tests=HTML_30_40,HTML_MESSAGE, MISSING_OUTLOOK_NAME 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 Status: O X-Status: X-Keywords: X-UID: 947 Ce message est composé et au format MIME. ------=_NextPart_000_000D_01CE911B.D67D1830 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable It is interesting to remember the UK 73 kHz band experimentation which = began april 1996.=20 About the record : have a look here : http://www.eham.net/articles/2883 On my side my first QSO x band was 28/03/1998 with Peter G3LDO. On = normal CW, he was transmitting on 73.2 kHz and I gave to him 579 at 340 = km. I have his QSL for this rare QSO. HI. 73 de Andy. F6CNI From: Stefan Sch=E4fer=20 Sent: Sunday, August 04, 2013 1:39 PM To: rsgb_lf_group@blacksheep.org=20 Subject: Re: LF: USA issued 68 to 76 kHz band with 10 W ERP Hi Markus,=20 Am 04.08.2013 09:46, schrieb Markus Vester:=20 Stefan, 10 W ERP is not that hard - anyone who can radiate 80 W ERP on = 136 will be able to do 10 W on half the frequency ;-)) Oh yes indeed. The radiation resistance of the wire is about 1/4 and the = needed L is about 4x, so the coil losses will be 4x higher too. The = ground losses may drop a bit. Then it depends on the ratio of coil = losses to ground losses. So 80W is realistic :-) I don't know anything about LF propagation on that band. Is it much = different to 2200m? And what are the distance records?=20 Yesterday night a friend showed me his new GPS-stabilized = quadrocopter. It's stunning how it could just about be parked in midair, = despite some lateral winds. Seems that would make a great antenna = carrier! Not all of the neighbour's seemed to enjoy it as much as we = did...=20 MOST interesting! Did you ask him what the weight can be lifted? And = will it still be stable then? Is it expensive? Do you fear some EMC = problems? (The topic should be discussed in a new subject then) 73, Stefan/DK7FC Best 73, Markus (DF6NM) ------=_NextPart_000_000D_01CE911B.D67D1830 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
It is interesting to remember the UK 73 kHz band experimentation = which=20 began april 1996.
 
About the record : have a look here : http://www.eham.net/articles/2= 883
 
On my side my first QSO x band was 28/03/1998 with Peter G3LDO. On = normal=20 CW,  he was transmitting on 73.2 kHz and I gave to him 579 at 340 = km.
 
I have his QSL for this rare QSO. HI.
 
73 de Andy. F6CNI
 
From: Stefan = Sch=E4fer
Sent: Sunday, August 04, 2013 1:39 PM
Subject: Re: LF: USA issued 68 to 76 kHz band with 10 W=20 ERP
 
Hi=20 Markus,

Am 04.08.2013 09:46, schrieb Markus Vester:=20
 
Stefan, 10 W ERP is not that hard - = anyone who=20 can radiate 80 W ERP on 136 will be able to do 10 W on half the = frequency=20 ;-))
Oh yes indeed. The radiation resistance = of the=20 wire is about 1/4 and the needed L is about 4x, so the coil losses will = be 4x=20 higher too. The ground losses may drop a bit. Then it depends on the = ratio of=20 coil losses to ground losses. So 80W is realistic :-)

I don't = know=20 anything about LF propagation on that band. Is it much different to = 2200m? And=20 what are the distance records?

Yesterday night a friend showed me = his new=20 GPS-stabilized quadrocopter. It's stunning how it could just about be = parked=20 in midair, despite some lateral winds. Seems that would make a great = antenna=20 carrier! Not all of the neighbour's seemed to enjoy it as much as we = did...=20
MOST interesting! Did you ask him what the = weight can=20 be lifted? And will it still be stable then? Is it expensive? Do you = fear some=20 EMC problems? (The topic should be discussed in a new subject = then)

73,=20 Stefan/DK7FC

 
Best 73,
Markus=20 (DF6NM)
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