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 w9CFLaCE004944 for ; Fri, 12 Oct 2018 17:21:43 +0200 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1gAzAr-0007qs-Pd for rs_out_1@blacksheep.org; Fri, 12 Oct 2018 16:16:21 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1gAzAq-0007qj-Qv for rsgb_lf_group@blacksheep.org; Fri, 12 Oct 2018 16:16:20 +0100 Received: from smtpq1.tb.ukmail.iss.as9143.net ([212.54.57.96]) by relay1.thorcom.net with esmtps (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.91_59-0488984) (envelope-from ) id 1gAzAp-00040o-7T for rsgb_lf_group@blacksheep.org; Fri, 12 Oct 2018 16:16:19 +0100 Received: from [212.54.57.80] (helo=smtp1.tb.ukmail.iss.as9143.net) by smtpq1.tb.ukmail.iss.as9143.net with esmtp (Exim 4.86_2) (envelope-from ) id 1gAzAo-0003ma-B6 for rsgb_lf_group@blacksheep.org; Fri, 12 Oct 2018 17:16:18 +0200 Received: from oxbe14.tb.ukmail.iss.as9143.net ([172.25.160.145]) by smtp1.tb.ukmail.iss.as9143.net with ESMTP id AzAogCkgB2daIAzAogtRZY; Fri, 12 Oct 2018 17:16:18 +0200 X-DKIM-Result: Domain=virginmedia.com Result=Signature OK X-Env-Mailfrom: daveyxm@virginmedia.com X-Env-Rcptto: rsgb_lf_group@blacksheep.org X-SourceIP: 172.25.160.145 X-CNFS-Analysis: v=2.3 cv=ZtI81OzG c=1 sm=1 tr=0 a=DLFSjXpdtQHJ5hZ/0KPoEg==:117 a=aFfEYTxPjcIA:10 a=v5yEw7XYEIkA:10 a=pGLkceISAAAA:8 a=5xnEBTrk146l6V0242oA:9 a=QEXdDO2ut3YA:10 a=Olfsj8viUQ360vpJSKsA:9 a=yv-I2Ig7TAAoU816:21 a=_W_S_7VecoQA:10 X-Authenticated-Sender: daveyxm@virginmedia.com DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=virginmedia.com; s=meg.feb2017; t=1539357378; bh=Tmypx8bQ9goEBLr6dEV8clg0JaqWRkcMRQOfjOMQ6Kk=; h=Date:From:To:In-Reply-To:References:Subject; b=ZRr02dtsA7hSm48wc0vu4+KOpaVb0c1Aaz5lxJwG0zo21XAZ5gnDN0EHXVUmle3RC JinhGxBwN6qLMmKnp4LkgvmHFbvvmsB7w4XDtm3Bfz8AZ2RBttQDkK2NKS6QYfMT8x 59yE/khyk4fpO1fFCyM59JKeFqq/rlm6E10Edft56TVcYGFIe5aQpHiz/ArWcYRzQ7 bhDwlbvQkN9wo9xub0fVj2wFE7XwWVXT5OAulygAI5JZ41Ci9lrQ3jyVaHAKVprov1 D6Sy41hipmQwwMuxzrvouojABenM5PMUyrX9XD2iMhYAz6LAJ2UKJMmNIcOSdH6YDo W/fq3LcmqJeFQ== Date: Fri, 12 Oct 2018 16:16:18 +0100 (BST) From: DAVE PICK To: rsgb_lf_group@blacksheep.org, Chris Wilson Message-ID: <1847338721.144166.1539357378254@mail2.virginmedia.com> In-Reply-To: <378922653.20181012134210@gmail.com> References: <1585153745.20181010151550@gmail.com> <378922653.20181012134210@gmail.com> MIME-Version: 1.0 X-Priority: 3 Importance: Medium X-Mailer: Open-Xchange Mailer v7.8.3-Rev50 X-Originating-IP: 85.255.233.83 X-Originating-Client: open-xchange-appsuite X-CMAE-Envelope: MS4wfGe22NHPwvG+AsW4qynh1/oCPjNjNnt0J4Vsv+n7mWF4gUfFryijN+b5IvPTDBjPLeFyGfBWzoKyaHPqRg1wg8Mjemz7BuAGUqUGk5Q/q9y8OpFKn6MT qiFb1d+h5d5Auf+uEXnEfhzwS30WO9T67dE/j8zUYQFHqE/CP5U1lC7TAiDlXSiOwA4WQe3GWhsqBwY4T93jahNbB3Zwnq9dljnLF5msPDLTSSIjKU1nuM/m 05pcvAicKnxCoFTEPxwr2g== X-Spam-Score: -0.7 (/) 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 @@CONTACT_ADDRESS@@ for details. Content preview: Chris The squiggles don't look too bad, are you sure it's not just pick-up on the oscilloscope probe? It makes a big difference where you put the earth clip in a high-current circuit. Dave G3YXM [...] Content analysis details: (-0.7 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -0.7 RCVD_IN_DNSWL_LOW RBL: Sender listed at http://www.dnswl.org/, low trust [212.54.57.96 listed in list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record 0.0 HTML_MESSAGE BODY: HTML included in message 0.0 T_DKIM_INVALID DKIM-Signature header exists but is not valid X-Scan-Signature: bde53fa3678f346afe39dd99e3e185db Subject: Re: LF: FET driver driven direct from a Si5351a questions Content-Type: multipart/alternative; boundary="----=_Part_144165_1945869208.1539357378251" 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=HTML_MESSAGE 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 ------=_Part_144165_1945869208.1539357378251 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Chris The squiggles don't look too bad, are you sure it's not just pick-up on the oscilloscope probe? It makes a big difference where you put the earth clip in a high-current circuit. Dave G3YXM > On 12 October 2018 at 13:42 Chris Wilson wrote: > > > > > Hello David, > > Thanks for the reply. I will try this I take it you just tie Input A > and Input B together and feed it a x2 signal with X2 tone spacing if > using WSPR? I am pretty sure there's either harmonics or another > frequency riding on CLK1 when in this new Iv mode so I am moving away > from that as you suggest. I now have a refreshed set up whereby I am > able to use the TS-590 for sensible TX operation of JT-9 with either the > Red Pitaya or the 590 as the receiver. So when the LF antenna is > operational at your end I should be able to work you :) > > Thursday, October 11, 2018, 9:36:03 PM, you wrote: > > > Hi Chris. > > Not sure I have a solution for the circuit you have. > > > However, it may be worth not using the 180 degree outputs from the > > Silab oscillator. Have you thought about the advantages of a FET driver > > that has a common input but 2 antiphase outputs ?? > > The TC4428 is an example. They take great care with rise times and > > propagation delays....perhaps the Si device does not give 'perfect' waveforms. > > > > Worth a try ?? > > > > regards > > > > David > > > > > -- > Best regards, > Chris mailto:dead.fets@gmail.com > > ------=_Part_144165_1945869208.1539357378251 MIME-Version: 1.0 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Chris

The squiggles don't look too bad, are you sur= e it's not just pick-up on the oscilloscope probe?
It makes a big di= fference where you put the earth clip in a high-current circuit.

Dav= e G3YXM

> On 12 October 2018 at 13:42 Chris Wilson <dead.fet= s@gmail.com> wrote:
>
>
>
>
> He= llo David,
>
> Thanks for the reply. I will try this I tak= e it you just tie Input A
> and Input B together and feed it a x2 = signal with X2 tone spacing if
> using WSPR? I am pretty sure = there's either harmonics or another
> frequency riding on CLK= 1 when in this new Iv mode so I am moving away
> from that as you s= uggest. I now have a refreshed set up whereby I am
> able to use t= he TS-590 for sensible TX operation of JT-9 with either the
> Red P= itaya or the 590 as the receiver. So when the LF antenna is
>= ; operational at your end I should be able to work you :)
>
>= ; Thursday, October 11, 2018, 9:36:03 PM, you wrote:
>
> = 2; Hi Chris.
> > Not sure I have a solution for the circuit you = have. 
>
> > However, it may be worth not using th= e 180 degree outputs from the
> > Silab oscillator.  Have y= ou thought about the advantages of a FET driver
> > that has a c= ommon input but 2 antiphase outputs ??
> > The TC4428 is an exam= ple. They take great care with rise times and
> > propagation de= lays....perhaps the Si device does not give 'perfect' waveforms.>
>
> > Worth a try ??
>
>
>= ; > regards
>
>
> > David
>
>=
>
>
> --
> Best regards,
> Chris = mailto:dead.fets@gmail.com
>
> =20 ------=_Part_144165_1945869208.1539357378251--