Content-Type: text/plain; charset=iso-8859-1; format=flowed Return-Path: Received: (qmail 15874 invoked from network); 5 May 1999 07:31:29 +0100 Received: from magnus.plus.net.uk (HELO magnus.force9.net) (195.166.128.27) by guiness.force9.net with SMTP; 5 May 1999 07:31:29 +0100 Received: (qmail 2913 invoked from network); 5 May 1999 06:33:09 -0000 Received: from punt.unica.co.uk (194.75.183.60) by magnus.plus.net.uk with SMTP; 5 May 1999 06:33:09 -0000 Content-Transfer-Encoding: 8bit Received: from troy.blacksheep.org ([194.75.183.50] ident=root) by punt.unica.co.uk with esmtp (Exim 2.00 #2) id 10evCJ-0002uT-00; Wed, 5 May 1999 07:30:23 +0100 X-Priority: 3 Received: (from root@localhost) by troy.blacksheep.org (8.6.12/8.6.12) id GAA10193 for rsgb_lf_group-outgoing; Wed, 5 May 1999 06:30:06 GMT X-MSMail-Priority: Normal Received: from post.thorcom.com (root@post.unica.co.uk [194.75.183.70]) by troy.blacksheep.org (8.6.12/8.6.12) with ESMTP id GAA10177 for ; Wed, 5 May 1999 06:30:02 GMT Received: from gatek.vs.dasa.de ([195.243.118.226] helo=gatekeeper.vs.dasa.de) by post.thorcom.com with smtp (Exim 2.04 #3) id 10evBp-0006ti-00 for rsgb_lf_group@blacksheep.org; Wed, 5 May 1999 07:29:53 +0100 Received: by gatekeeper.vs.dasa.de; (5.65v3.2/1.3/10May95) id AA08812; Wed, 5 May 1999 08:24:42 +0200 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Received: from somewhere by smtpxd Message-ID: From: "Koenig, Wolfgang" To: rsgb_lf_group@blacksheep.org Subject: LF: LF Fieldday of DL0UL/p Date: Wed, 5 May 1999 08:29:35 +0200 X-MS-TNEF-Correlator: MIME-Version: 1.0 X-Mailer: Internet Mail Service (5.5.2448.0) Sender: Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org Hallo Group, a short report of the last weekends LF test by DL0UL/p. We started building up the UHF antennas for contest operation. There was a 12m and a 17m mast with yagi groups installed. On satuday we brought up the LW ant. I was fixed between a fir abt 15 m and the 12m mast. the spacing was abt 120m. From the 12m mast the wire was fed over a 50 m distance to the station. On the opposite side 4 radials each abt 150 m were spread. TRX was a TR7 with PA. The formation was easy to tune for matching to the 50 ohm output of my PA. The antenna current was abt 2 A peak. But: the noise was S9 to S9 +20 dB. And: there were interferences from the UHF station (432 MHz) . The noise was caused by the AC generator and the different computer monitors and switching powersupplies but the UHF operators were not willing to switch off for a few hours. To heare any signal on the band we had to turn on a 30 dB attenuator. So we only could work a few stations in the suoth germany area. There was DJ7RD at 0605 got 589 gave 559 DJ2EY at 0615 589 539 DJ2LF 0623 569 539 DF2PY 0803 549 539 After one hour of calling CQ the Equipment started oscillating on abt 50 khz during the unkeyed gaps. So we stoped the operation. Result: It is not possible to run a big VHF or UHF contest station parallel to a LF station. So: For the next LF fieldtest we are going to use only battery supply, no computers and any other trouble making equipment. We are going to Implement bandpass filters to the RX ant TX path. A loop antenna is under development, may be only for RX operation or for RX and TX. We will see. And we are planing to run a KW station for X-band operation next event. Fortunately the weather was dry and sunny. A few of us ever got a sunburn. So the whole equipment (LF and UHF) including the tents was easy to dismantle. We are planing to make a new LF test with improverd equipment. 73 de DL1SAN