Return-Path: Received: (qmail 3818 invoked from network); 13 Jun 2001 10:13:53 -0000 Received: from unknown (HELO warrior-inbound.servers.plus.net) (212.159.14.227) by excalibur.plus.net with SMTP; 13 Jun 2001 10:13:53 -0000 Received: (qmail 8364 invoked from network); 13 Jun 2001 10:13:32 -0000 Content-Transfer-Encoding: 8bit Received: from unknown (HELO post.thorcom.com) (212.172.148.70) by warrior with SMTP; 13 Jun 2001 10:13:32 -0000 X-Priority: 3 Received: from majordom by post.thorcom.com with local (Exim 3.16 #2) id 15A7SG-0005x5-00 for rsgb_lf_group-outgoing@blacksheep.org; Wed, 13 Jun 2001 11:00:52 +0100 X-MSMail-Priority: Normal Received: from mail.cc.kuleuven.ac.be ([134.58.10.6]) by post.thorcom.com with esmtp (Exim 3.16 #2) id 15A7SA-0005x0-00 for rsgb_lf_group@blacksheep.org; Wed, 13 Jun 2001 11:00:47 +0100 Received: from LCBD15.fys.kuleuven.ac.be (LCBD15.fys.kuleuven.ac.be [134.58.80.15]) by mail.cc.kuleuven.ac.be (8.9.3/8.9.0) with SMTP id MAA895184 for ; Wed, 13 Jun 2001 12:00:03 +0200 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Message-ID: <3.0.1.16.20010613110032.2c87bde2@mail.cc.kuleuven.ac.be> X-Sender: pb623250@mail.cc.kuleuven.ac.be X-Mailer: Windows Eudora Pro Version 3.0.1 (16) Date: Wed, 13 Jun 2001 11:00:32 To: rsgb_lf_group@blacksheep.org From: "Rik Strobbe" Subject: Re: LF: RE: 73kHz tests tonight In-reply-to: <01aa01c0f3e2$60226840$1601a8c0@maly.cz.gmc.net> References: <7D653C9C42F5D411A27C00508BF8803D55C4CE@pdw-mail-r1.dstl.gov.uk> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group Sender: At 10:25 13/06/01 +0200, you wrote: >Could TC4428 be keyed in G3YXM design? If so, it would simplify the whole >schematic. > >Petr, 'FIG Petr, That idea crossed my mind 2 years ago when building my TX (variation on the YXM design). But due to different delay times in the inverting and non-inverting drivers (I measured abt. 25ns difference) I didn't use the 4428 it. If you don't wan't to use a flip-flop to get the counter-phase signals you can use a couple of CMOS XOR gates, with a CD4077 running on 15V I measured less than 3ns difference between the inverting and non inverting gate. 73, Rik ON7YD