X-GM-THRID: 1199539128024826135 X-Gmail-Labels: rsgb lf X-Gmail-Received: 52ed93b9c4632cde9b2e8997497554144dd1b2d9 Delivered-To: daveyxm@gmail.com Received: by 10.54.72.18 with SMTP id u18cs5806wra; Sun, 2 Apr 2006 18:10:15 -0700 (PDT) Received: by 10.48.164.13 with SMTP id m13mr2017148nfe; Sun, 02 Apr 2006 18:10:15 -0700 (PDT) Return-Path: Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by mx.gmail.com with ESMTP id g1si2325627nfe.2006.04.02.18.10.14; Sun, 02 Apr 2006 18:10:15 -0700 (PDT) Received-SPF: neutral (gmail.com: 193.82.116.20 is neither permitted nor denied by best guess record for domain of owner-rsgb_lf_group@blacksheep.org) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1FQDVE-0003m4-4G for rs_out_1@blacksheep.org; Mon, 03 Apr 2006 02:05:08 +0100 Received: from [193.82.59.130] (helo=relay2.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1FQDVD-0003lv-GU for rsgb_lf_group@blacksheep.org; Mon, 03 Apr 2006 02:05:07 +0100 Received: from bay116-f34.bay116.hotmail.com ([64.4.38.44] helo=hotmail.com) by relay2.thorcom.net with esmtp (Exim 4.51) id 1FQEgX-0005Yw-Un for rsgb_lf_group@blacksheep.org; Mon, 03 Apr 2006 03:20:55 +0100 Received: from mail pickup service by hotmail.com with Microsoft SMTPSVC; Sun, 2 Apr 2006 18:04:59 -0700 Message-ID: Received: from 64.4.38.200 by by116fd.bay116.hotmail.msn.com with HTTP; Mon, 03 Apr 2006 01:04:55 GMT X-Originating-IP: [69.92.243.140] X-Originating-Email: [hellozerohellozero@hotmail.com] X-Sender: hellozerohellozero@hotmail.com In-Reply-To: From: "Laurence KL1X" To: rsgb_lf_group@blacksheep.org Bcc: Date: Sun, 02 Apr 2006 17:04:55 -0800 Mime-Version: 1.0 X-OriginalArrivalTime: 03 Apr 2006 01:04:59.0403 (UTC) FILETIME=[A123EDB0:01C656BA] X-Spam-Score: -1.2 (-) X-Spam-Report: autolearn=disabled,AWL=-1.166,MSGID_FROM_MTA_HEADER=0 Subject: Re: LF: T/A April 2 Content-Type: text/plain; format=flowed 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=MSGID_FROM_MTA_HEADER 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: 5934 Joe - on 137Khz does your sensitivity improve with the IPO enabled on the 817...? its very deaf without a lot of drive but with the L400b eprobe it shoves enough signal - without it and on my loop arrays I needed something like 20dB gain to get things "hot". I agree on the modification! Laurence KL1X in 5 okie em26br from the manual - "IPO (Intercept Point Optimization) - Bypasses RX Preamp on HF/50 MHz for improved performance during strong-signal conditions." >From: Joe Craig >Reply-To: rsgb_lf_group@blacksheep.org >To: rsgb_lf_group@blacksheep.org >Subject: Re: LF: T/A April 2 >Date: Sun, 2 Apr 2006 21:49:00 -0230 (NDT) > >Roelof and group, > >I was using an ft-817 with the miniwhip and was quite amazed that >the LF TX could be heard at 20km. I will try the attenuator between the >rig and the miniwhip next time to see if the intermod is from the RX. >Thanks fort the suggestion. > >The ft817 is very deaf below 0.5 MHz because of the small inductive >reactances in the front end and mixer xfmr I believe, but modifying >it would be awkward because of its size. > >Joe > > >