Return-Path: Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-db02.r1000.mx.aol.com (Internet Inbound) with ESMTP id 2733D38000083; Tue, 8 Nov 2011 15:24:04 -0500 (EST) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1RNsCW-0006Tr-Aa for rs_out_1@blacksheep.org; Tue, 08 Nov 2011 20:23:20 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1RNsCV-0006Ti-Uj for rsgb_lf_group@blacksheep.org; Tue, 08 Nov 2011 20:23:19 +0000 Received: from smtp6.freeserve.com ([193.252.22.190]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1RNsCT-00020L-EN for rsgb_lf_group@blacksheep.org; Tue, 08 Nov 2011 20:23:19 +0000 Received: from me-wanadoo.net (localhost [127.0.0.1]) by mwinf3602.me.freeserve.com (SMTP Server) with ESMTP id B827F7000092 for ; Tue, 8 Nov 2011 21:23:11 +0100 (CET) Received: from me-wanadoo.net (localhost [127.0.0.1]) by mwinf3602.me.freeserve.com (SMTP Server) with ESMTP id AB9C77000095 for ; Tue, 8 Nov 2011 21:23:11 +0100 (CET) Received: from AGB (unknown [2.26.29.160]) by mwinf3602.me.freeserve.com (SMTP Server) with SMTP id 564257000092 for ; Tue, 8 Nov 2011 21:23:09 +0100 (CET) X-ME-UUID: 20111108202309353.564257000092@mwinf3602.me.freeserve.com Message-ID: <9ED904429E6E4148B12FEAE52A614884@AGB> From: "Graham" To: References: <6960E96D-E826-4AD3-A1FF-585BFBEC86A6@numeo.fr> <4EB98E2A.1090905@g3ysx.org.uk> In-Reply-To: <4EB98E2A.1090905@g3ysx.org.uk> Date: Tue, 8 Nov 2011 20:23:09 -0000 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal Importance: Normal X-Mailer: Microsoft Windows Live Mail 14.0.8117.416 X-MimeOLE: Produced By Microsoft MimeOLE V14.0.8117.416 X-Antivirus: avast! (VPS 111108-1, 08/11/2011), Outbound message X-Antivirus-Status: Clean X-Spam-Score: 0.2 (/) X-Spam-Report: autolearn=disabled,RCVD_ILLEGAL_IP=0.234 Subject: Re: LF: PA0RDT whip Content-Type: text/plain; format=flowed; charset="ISO-8859-15"; reply-type=response 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=0.1 required=5.0 tests=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 x-aol-global-disposition: G X-AOL-SCOLL-SCORE: 0:2:458303744:93952408 X-AOL-SCOLL-URL_COUNT: 0 x-aol-sid: 3039ac1d40564eb98fe32846 X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none SOT89 looks like it may mount but at 5GHz suspect it needs to be flat against the ground plane ? G. -------------------------------------------------- From: "Stewart Bryant" Sent: Tuesday, November 08, 2011 8:16 PM To: Cc: "Roelof Bakker" Subject: Re: LF: PA0RDT whip > > On 04/11/2011 18:10, Roelof Bakker wrote: >> On an other note, instead of the trusty 2N5109 a BFQ19, a modern rf >> transistor, can be used. >> It gives slightly better IMD figures in this circuit, especial at lower >> supply voltages. >> >> 73, >> Roelof, pa0rdt >> > > The only BFQ19s that I was able to source were SMT. Did you get them in > another package? > > Did you need to use a heatsink with this transistor? > > 73 > > Stewart/G3YSX > > > >