Return-Path: Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-dh05.r1000.mx.aol.com (Internet Inbound) with ESMTP id 7980C380000AE; Thu, 11 Oct 2012 12:57:24 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1TMLM0-000318-1z for rs_out_1@blacksheep.org; Thu, 11 Oct 2012 17:11:20 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1TMLLz-00030z-DT for rsgb_lf_group@blacksheep.org; Thu, 11 Oct 2012 17:11:19 +0100 Received: from out1.ip07ir2.opaltelecom.net ([62.24.128.243]) by relay1.thorcom.net with esmtp (Exim 4.77) (envelope-from ) id 1TMLLx-0007I5-95 for rsgb_lf_group@blacksheep.org; Thu, 11 Oct 2012 17:11:18 +0100 X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: AhIFADnrdlBcF1bx/2dsb2JhbAA9B4YSokeWb4EJghsFAQEFCAEBAxYzAiwBAQMFAgEDEQQBAQohAgIUAQQaBhYIBhMKAQICAQGHYQMTpw6TCophZiGEbYESA41pmDSCbYFaCRkB X-IronPort-AV: E=Sophos;i="4.80,572,1344207600"; d="scan'208,217";a="50196361" Received: from host-92-23-86-241.as13285.net (HELO xphd97xgq27nyf) ([92.23.86.241]) by out1.ip07ir2.opaltelecom.net with SMTP; 11 Oct 2012 17:11:15 +0100 Message-ID: <001901cda7cb$09a99200$0501a8c0@xphd97xgq27nyf> From: "mal hamilton" To: References: <50769C8B.10907@iup.uni-heidelberg.de> Date: Thu, 11 Oct 2012 16:11:13 -0000 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2600.0000 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2600.0000 X-Spam-Score: 4.4 (++++) 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: Stefan es Co Do you mean using a remote VHF repeater system for receiving? The TX antenna can also be used for receiving with advantage if certain precautions are taken like using a Quality RX and suitable attenuation. Another approach would be to use a large loop antenna suspended from the tower for RX only but resonated for the frequency of interest. Instead of a totally vertical antenna suspend a full size one wavelength loop for both TX and RX. orientated in the desired direction. If I had a large tower available like the one described I would not have a problem either on TX or RX 73 GL de G3KEV [...] Content analysis details: (4.4 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 SPF_PASS SPF: sender matches SPF record 0.0 HTML_MESSAGE BODY: HTML included in message 4.4 AXB_XMAILER_MIMEOLE_OL_024C2 AXB_XMAILER_MIMEOLE_OL_024C2 X-Scan-Signature: f9f85a03ab18710b130c40acc03380f0 Subject: Re: LF: QSP from DK7PE: 2nd DK0SWF Activity October 13/14, 2012 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0016_01CDA7CB.0953D0E0" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.8 required=5.0 tests=HTML_30_40,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-sid: 3039ac1d41195076fa734a77 X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none This is a multi-part message in MIME format. ------=_NextPart_000_0016_01CDA7CB.0953D0E0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Stefan es Co Do you mean using a remote VHF repeater system for receiving? The TX = antenna can also be used for receiving with advantage if certain = precautions are taken like using a Quality RX and suitable attenuation. = Another approach would be to use a large loop antenna suspended from the = tower for RX only but resonated for the frequency of interest.=20 Instead of a totally vertical antenna suspend a full size one wavelength = loop for both TX and RX. orientated in the desired direction. If I had a large tower available like the one described I would not have = a problem either on TX or RX 73 GL de G3KEV ----- Original Message -----=20 From: Stefan Sch=C3=A4fer=20 To: rsgb_lf_group@blacksheep.org=20 Sent: Thursday, October 11, 2012 10:16 AM Subject: Re: LF: QSP from DK7PE: 2nd DK0SWF Activity October 13/14, = 2012 Hi Holger,=20 Thanks for the information/update! Nice to know that they are = proceeding and they obviously know what to do :-) The idea with the VHF link is very good but maybe they only need to = detune the TX antenna to get much better results. This can be done by a = RX/TX relais (22k (ish) resistor across that). Will they try that? Maybe = they can reduce the needed efforts... Using Twente SDR is of course = another idea for a separated RX but it may be to far during the time the = band is still closed or to copy weak local stations... Unfortunately i am not in Heidelberg this weekend :-( 73, Stefan/DK7FC Am 11.10.2012 06:31, schrieb Holger 'Geri' DK8KW DI2BO W1KW:=20 DK0SWF second DARC Mainz 630m operation Sat. Oct. 13th until 14th = 2012 Members of the DARC group Mainz/Germany will be operating again on = 630m during the coming weekend! They will use a full quarter wave = commercial verical! They will startSaturday, Oct. 13th around 16:00 UTC, = staying on the air until Sunday 14th around 06:00 UTC. This time they = will try different receiving antenna types, hoping to improve the = receiving capabilities.=20 For example, they will also use a better receiver (now R&S EK70) = plus a specially designed rx/tx filter, a 472 kHz receiving loop and a = second (10km separated) receiving station, linked via VHF.=20 Please listen for them on 473,500 kHz for any cq calls. They will = also use 472,500 kHz temporarily but rather like to keep this one free = for other users. QSX on other frequencies (e.g. between 501 and 503 kHz = or even cross-band 80m) will be announced.=20 They are looking forward to work some more of the active 630m = stations in EU. Receiving reports and any helpful comments are most = welcome via eMail dk0swf@gmx.de The DK0SWF Team=20 ------=_NextPart_000_0016_01CDA7CB.0953D0E0 Content-Type: text/html; charset="utf-8" Content-Transfer-Encoding: quoted-printable =EF=BB=BF
Stefan es Co
Do you mean using a remote VHF repeater = system for=20 receiving? The TX antenna can also be used for receiving with advantage = if=20 certain precautions are taken like using a Quality RX and suitable = attenuation.=20 Another approach would be to use a large loop antenna suspended from the = tower=20 for RX only but resonated for the frequency of interest.
Instead of a totally vertical antenna suspend a = full size=20 one wavelength loop for both TX and RX. orientated in the desired=20 direction.
If I had a large tower available like the one = described I=20 would not have a problem either on TX or RX
73 GL de G3KEV
 
----- Original Message -----
From:=20 Stefan = Sch=C3=A4fer
Sent: Thursday, October 11, = 2012 10:16=20 AM
Subject: Re: LF: QSP from = DK7PE: 2nd=20 DK0SWF Activity October 13/14, 2012

Hi Holger,

Thanks for the information/update! = Nice to=20 know that they are proceeding and they obviously know what to do=20 :-)

The idea with the VHF link is very good but maybe they only = need to=20 detune the TX antenna to get much better results. This can be done by = a RX/TX=20 relais (22k (ish) resistor across that). Will they try that? Maybe = they can=20 reduce the needed efforts... Using Twente SDR is of course another = idea for a=20 separated RX but it may be to far during the time the band is still = closed or=20 to copy weak local stations...

Unfortunately i am not in = Heidelberg=20 this weekend :-(

73, Stefan/DK7FC


Am 11.10.2012 = 06:31,=20 schrieb Holger 'Geri' DK8KW DI2BO W1KW:=20

DK0SWF second DARC=20 Mainz 630m operation Sat. Oct.=20 13th until 14th 2012

Members of the DARC group = Mainz/Germany=20 will be operating again on 630m during the coming weekend! They will = use a=20 full quarter wave commercial verical! They will startSaturday, = Oct. 13th=20 around 16:00 UTC, staying on the air until = Sunday=20 14th around 06:00 UTC. This time they = will try=20 different receiving antenna types, hoping to improve the receiving=20 capabilities. 

For example, they will also = use a better=20 receiver (now R&S EK70) plus a specially designed rx/tx filter, = a 472=20 kHz receiving loop and a second (10km separated) receiving station, = linked=20 via VHF. 

Please listen for them on = 473,500 kHz=20 for any cq calls. They will also use 472,500 kHz temporarily but = rather like=20 to keep this one free for other users. QSX on other frequencies = (e.g.=20 between 501 and 503 kHz or even cross-band 80m) will be=20 announced. 

They are looking forward to = work some=20 more of the active 630m stations in EU. Receiving reports and any = helpful=20 comments are most welcome via eMail dk0swf@gmx.de

The DK0SWF Team 

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