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 x1QJU9nM008311 for ; Tue, 26 Feb 2019 20:30:10 +0100 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1gyiMz-0003G1-3V for rs_out_1@blacksheep.org; Tue, 26 Feb 2019 19:26:25 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1gyiMx-0003Fs-Hp for rsgb_lf_group@blacksheep.org; Tue, 26 Feb 2019 19:26:23 +0000 Received: from mail-ua1-x934.google.com ([2607:f8b0:4864:20::934]) by relay1.thorcom.net with esmtps (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.91) (envelope-from ) id 1gyiMv-0001JD-Ac for rsgb_lf_group@blacksheep.org; Tue, 26 Feb 2019 19:26:22 +0000 Received: by mail-ua1-x934.google.com with SMTP id u1so12228008uae.12 for ; Tue, 26 Feb 2019 11:26:20 -0800 (PST) X-DKIM-Result: Domain=gmail.com Result=Good and Known Domain DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to; bh=d83sbAhJrJKTzeqzaoDc0Y5ceYk5pJayP3mjSo0JY4w=; b=Zdip9v18wRvBp+xsYKINwTXT5KtgaWHIFURakc5/hp78bEFra6SiWDlf18c3x0Tah4 CTmBVwIHQ8ymZ2NajRQ67o+qUV4hAzQn7SZOKm69wtQYgk4UU6Z+BdV0pjy9BoxkdaiG IcOWlCYvIYsSB0RxjW7Yx/qykaY09ee9i0CWuZTkiGM5JqPYbU9pCP+OskT5QIrF5ZLV UtxRLZBpZydZ6676Rg4o/kwtqlwVTc1tJXpXh/KompnYDJ1qQ6o5NU078F76BHNu+4SD /UQJDbhDW3zRpRTlhUsl426MWPu6gILjdXnza+bkMiV/Tg4y29+qJ4RHnKBqoXKNC6oz dVIQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to; bh=d83sbAhJrJKTzeqzaoDc0Y5ceYk5pJayP3mjSo0JY4w=; b=plvht495FBT9pXQRDrmOnBmXxESY9ZPMVtES/fqxMXQp+SNC6o8kyU75YmrpGDOvt5 WkSvUyGA6fJn6rse38vZ10Kw66fL4xeGymbGtMoiCd+BcTffaOziBuEFQPns18VSCaKW FLTSzD3WYQxyVcn4CUNLAzsf/1qQ4Bfi0q3f5UurRpPXBpMBqV1kC8iOi4y8ycOvfBNQ sjTcrdxxVjQmnpC9Vg71/AQE2M9k+RCEW8Fkznd99PC+hlkG+7j+h197WZWXCmNVKSWI d92S6Qd6wjaTLhfrrMg26appRMk23a1c0VK9+BhXxMjJQNBZe+d85e1hCUYEaERpf9jW DP/w== X-Gm-Message-State: AHQUAuZuUC+mrRTzmFBrD6BGObqymjiaMYJQs+JymRbSi6+vXlhQ3C6D jmuvh7aYH6+U03e2hmNGsJE+7HWsEtcYYkVs6DyISw== X-Google-Smtp-Source: AHgI3IaGaR1qmuD3oNSNAbzP9QXNAw6/j46M4AVfzMxbsiTsNkJoyVirVxRxp3JBi2XjF1DlnFt9aTtHOaFSgJmzTB8= X-Received: by 2002:ab0:7799:: with SMTP id x25mr8907638uar.81.1551209179797; Tue, 26 Feb 2019 11:26:19 -0800 (PST) MIME-Version: 1.0 References: <942860C848184BA2A0A9103E0EE56DF7@DELL4> <1UTEEgOcyQ.DAejAuRZtn9@optiplex980-pc> <92784b07-a799-fb4e-9080-e1e8bb167b75@n1bug.com> <1UTEEhG1Ft.EdI1dlVbFOZ@optiplex980-pc> <3062ef19-bb69-3187-e8db-6a6bf5050739@n1bug.com> <234098919.20190226111836@gmail.com> <0a79de5c-3274-caae-c000-d5f49bb44540@no3m.net> <21240445.20190226160950@gmail.com> <57e33c0d-6904-9010-a1c8-69b80f474068@no3m.net> <1191469216.20190226175207@gmail.com> <823BBA7099F84CE9924D2D9E7E379C05@DELL4> <1677ed22-9174-82d9-e7aa-f08d1c42f130@n1bug.com> In-Reply-To: <1677ed22-9174-82d9-e7aa-f08d1c42f130@n1bug.com> From: Andy Talbot Date: Tue, 26 Feb 2019 19:25:58 +0000 Message-ID: To: "rsgb_lf_group@blacksheep.org" X-Spam-Score: 0.0 (/) 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: So if used with no LPF (as it should be in this situation) the RF output may well have quite sharp edges. Just what's wanted. But for driving a divider, a direct connection to CLK0 is ideal and preferred. Content analysis details: (0.0 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at http://www.dnswl.org/, no trust [2607:f8b0:4864:20:0:0:0:934 listed in] [list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record 0.0 FREEMAIL_FROM Sender email is commonly abused enduser mail provider (andy.g4jnt[at]gmail.com) 0.0 HTML_MESSAGE BODY: HTML included in message X-Scan-Signature: fb42d311bf65eb51bbb8124890b4f977 Subject: Re: LF: Class D current spikes Content-Type: multipart/alternative; boundary="000000000000225c730582d108bd" 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=HTML_30_40,HTML_MESSAGE, TO_ADDRESS_EQ_REAL 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 --000000000000225c730582d108bd Content-Type: text/plain; charset="UTF-8" So if used with no LPF (as it should be in this situation) the RF output may well have quite sharp edges. Just what's wanted. But for driving a divider, a direct connection to CLK0 is ideal and preferred. Andy www.g4jnt.com On Tue, 26 Feb 2019 at 19:23, N1BUG wrote: > Jay, > > The U3S schematic is in the assembly manual: > > http://qrp-labs.com/images/ultimate3s/assembly_u3s_r3_lt.pdf > > 73, > Paul > > > On 2/26/19 2:12 PM, jrusgrove@comcast.net wrote: > > Anyone have a U3S schematic handy? Link to same? > > > > Jay W1VD > > > > ----- Original Message ----- > > From: "N1BUG" > > To: > > Sent: Tuesday, February 26, 2019 2:01 PM > > Subject: Re: LF: Class D current spikes > > > > > >> Eric, > >> > >> I I have always run my U3S through the W1VD doubler. Never had any > >> problems with blown FETs with that setup, even when I tested at 1 kW > >> under Part 5 license. There is apparently something different about > >> the U3S at end of RF envelope. > >> > >> 73, > >> Paul > >> > >> > >> On 2/26/19 12:52 PM, Chris Wilson wrote: > >>> > >>> > >>> Hello Eric, > >>> > >>> No, I have always run the U3S in X2 mode as far as I can remember. No > >>> doubler, no squarer, just straight out of CLK0 to Pin 3 of the 74F74. > >>> And no issues at all. Thanks. BTW, I really admire your old gear on > >>> your web site, awesome build standards and so nice to look at! > >>> > >>> Tuesday, February 26, 2019, 5:35:10 PM, you wrote: > >>> > >>>> Just to clarify... did you say previously that the U3S also worked > fine > >>>> running at 1x and feeding a doubler, squarer, etc. also? > > --000000000000225c730582d108bd Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
So if used with no LPF (as it should be in this = situation) the RF output may well have quite sharp edges.
= Just what's wanted.

But for driving = a divider, a direct connection to CLK0 is ideal and preferred.


On Tue, 26 Feb 2019 at 19:23, N1B= UG <paul@n1bug.com> wrote:
<= /div>
Jay,

The U3S schematic is in the assembly manual:

http://qrp-labs.com/images/ultimate3s/as= sembly_u3s_r3_lt.pdf

73,
Paul


On 2/26/19 2:12 PM, jrusgrove@comcast.net wrote:
> Anyone have a U3S schematic handy? Link to same?
>
> Jay W1VD
>
> ----- Original Message -----
> From: "N1BUG" <paul@n1bug.com>
> To: <rsgb_lf_group@blacksheep.org>
> Sent: Tuesday, February 26, 2019 2:01 PM
> Subject: Re: LF: Class D current spikes
>
>
>> Eric,
>>
>> I I have always run my U3S through the W1VD doubler. Never had any=
>> problems with blown FETs with that setup, even when I tested at 1 = kW
>> under Part 5 license. There is apparently something different abou= t
>> the U3S at end of RF envelope.
>>
>> 73,
>> Paul
>>
>>
>> On 2/26/19 12:52 PM, Chris Wilson wrote:
>>>
>>>
>>> Hello Eric,
>>>
>>> No,=C2=A0 I have always run the U3S in X2 mode as far as I can= remember. No
>>> doubler,=C2=A0 no squarer, just straight out of CLK0 to Pin 3 = of the 74F74.
>>> And=C2=A0 no=C2=A0 issues=C2=A0 at all. Thanks. BTW, I really = admire your old gear on
>>> your web site, awesome build standards and so nice to look at!=
>>>
>>> Tuesday, February 26, 2019, 5:35:10 PM, you wrote:
>>>
>>>> Just to clarify... did you say previously that the U3S als= o worked fine
>>>> running at 1x and feeding a doubler, squarer, etc. also?
--000000000000225c730582d108bd--