Return-Path: Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by klubnl.pl (8.14.4/8.14.4/Debian-8+deb8u2) with ESMTP id x2KIFh2D009626 for ; Wed, 20 Mar 2019 19:15:44 +0100 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1h6fhF-0000TS-42 for rs_out_1@blacksheep.org; Wed, 20 Mar 2019 18:12:13 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1h6fhE-0000TJ-Rq for rsgb_lf_group@blacksheep.org; Wed, 20 Mar 2019 18:12:12 +0000 Received: from mout01.posteo.de ([185.67.36.65]) by relay1.thorcom.net with esmtps (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.91) (envelope-from ) id 1h6fhD-0004pB-7C for rsgb_lf_group@blacksheep.org; Wed, 20 Mar 2019 18:12:11 +0000 Received: from submission (posteo.de [89.146.220.130]) by mout01.posteo.de (Postfix) with ESMTPS id E4CC7160061 for ; Wed, 20 Mar 2019 19:12:08 +0100 (CET) X-DKIM-Result: Domain=posteo.de Result=Signature OK DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=posteo.de; s=2017; t=1553105528; bh=+ynGb9cXnkkjGmB8WSCl+LX8/RdgubP1BscoOZSUuYg=; h=Date:From:To:Subject:From; b=hlQucDgqtnjM+3dkBHX7YQTg/e7q/QsAXVq7lhIfge51oz69GsXgFN5Mapyl1k0y8 c/NUU4PlaBjLV+u0Tj/IIRvlP7qY26LAbu1HSlLfzN2UeGLqy1TOoCbNI/extw3GQK I4HrjnmYOng1DjyObXpmV6UYTk0YTZZkkmTtA//cF8tlB6TQJbI0Qpo3VlbYxuNae+ 9L+2mTxgVlsY44QTZQB8qHauDI/ythhZpqJc24KPoTLADtgduUPAlL9+I9WvWnZIik Ip4MuWe4l56FzPbZ/eSrhMAgg/qN6cUP0RpcuIr5hzEeR8lv96a+MMHHDuBBG9weAH 0hfAjR3BUNkmQ== Received: from customer (localhost [127.0.0.1]) by submission (posteo.de) with ESMTPSA id 44PdKz6gXTz6tm5 for ; Wed, 20 Mar 2019 19:12:07 +0100 (CET) Message-ID: <5C928276.6030305@posteo.de> Date: Wed, 20 Mar 2019 19:12:06 +0100 From: DK7FC User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; de; rv:1.9.1.8) Gecko/20100227 Thunderbird/3.0.3 MIME-Version: 1.0 To: rsgb_lf_group@blacksheep.org References: <126956515.20190320112712@gmail.com> In-Reply-To: <126956515.20190320112712@gmail.com> X-Spam-Score: -2.3 (--) X-Spam-Report: Spam detection software, running on the system "relay1.thorcom.net", has NOT identified this incoming email as spam. The original message has been attached to this so you can view it or label similar future email. If you have any questions, see the administrator of that system for details. Content preview: Hi Chris, Use a relay, switched by a FET which is switched by a RS232 line. Then you can toggle the state by using SpecLab, each 2 minutes automatically, even at 0x:55, ie.between the sequences, where the TX is [...] Content analysis details: (-2.3 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -2.3 RCVD_IN_DNSWL_MED RBL: Sender listed at http://www.dnswl.org/, medium trust [185.67.36.65 listed in list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record X-Scan-Signature: e90dcb17768c7e768f13e0721cc1c0c7 Subject: Re: LF: Software to time swap 2 RX antennas over? Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit 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=none 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 Hi Chris, Use a relay, switched by a FET which is switched by a RS232 line. Then you can toggle the state by using SpecLab, each 2 minutes automatically, even at 0x:55, ie.between the sequences, where the TX is off. For LF you can use a normal relay, it does not need to be a coax relay. Consider to detune the unused RX antenna, i.e. avoid coupling. 73, Stefan Am 20.03.2019 12:27, schrieb Chris Wilson: > > Hello LF'ers, > > Looking for ideas re automatically swapping two RX antennas over to one receiver > timed to WSPR or other timed digital modes to compare performance, > Anyone got any input please? Thanks. > > > >