Return-Path: Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-da01.r1000.mx.aol.com (Internet Inbound) with ESMTP id 8119338000090; Thu, 28 Jun 2012 18:29:10 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1SkNCL-0000AK-5p for rs_out_1@blacksheep.org; Thu, 28 Jun 2012 23:28:25 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1SkNCK-0000AB-Js for rsgb_lf_group@blacksheep.org; Thu, 28 Jun 2012 23:28:24 +0100 Received: from mailout-de.gmx.net ([213.165.64.22]) by relay1.thorcom.net with smtp (Exim 4.77) (envelope-from ) id 1SkNCI-0006Tl-NQ for rsgb_lf_group@blacksheep.org; Thu, 28 Jun 2012 23:28:23 +0100 Received: (qmail invoked by alias); 28 Jun 2012 22:28:20 -0000 Received: from p54B9D5FB.dip.t-dialin.net (EHLO Notebook) [84.185.213.251] by mail.gmx.net (mp002) with SMTP; 29 Jun 2012 00:28:20 +0200 X-Authenticated: #20371661 X-Provags-ID: V01U2FsdGVkX19n9FsIM5dnzE8wqnasY7KhEjtk0PLjCml/rkrUWD 6ryfVbTt9ingLE Message-ID: <3839BF9E6D5544D2B8E5A1355130F1EB@Notebook> From: "Thomas Rosenkranz" To: References: <4FEB8A2F.3030504@iup.uni-heidelberg.de> <7E7DFBB4D102A04DB5ADC88D66628A4A0FAB65D1@ICTS-S-MBX5.luna.kuleuven.be> <82ECFF6D94B94BED9D93B5580549A409@Extensa> <1340872602.49196.YahooMailNeo@web171602.mail.ir2.yahoo.com> <4FEC18F4.9050608@online.fr> <1340875355.96079.YahooMailNeo@web171602.mail.ir2.yahoo.com> <1340876781.29716.YahooMailNeo@web171601.mail.ir2.yahoo.com> <4FEC7DDF.8050906@iup.uni-heidelberg.de> <1340908899.62897.YahooMailNeo@web171605.mail.ir2.yahoo.com> <4FECD820.8060105@iup.uni-heidelberg.de> In-Reply-To: <4FECD820.8060105@iup.uni-heidelberg.de> Date: Fri, 29 Jun 2012 00:28:19 +0200 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Windows Mail 6.0.6001.18416 X-MimeOLE: Produced By Microsoft MimeOLE V6.0.6001.18645 X-Y-GMX-Trusted: 0 X-Spam-Score: 0.3 (/) X-Spam-Report: Spam detection software, running on the system "relay1.thorcom.net", has identified this incoming email as possible spam. The original message has been attached to this so you can view it (if it isn't spam) or label similar future email. If you have any questions, see the administrator of that system for details. Content preview: hy Stefan, hast du auf MW lust?? Thomas ----- Original Message ----- From: Stefan Schäfer To: Friday, June 29, 2012 12:18 AM Subject: Re: LF: Re: RE: 472 kHz PA running at 12 VDC [...] Content analysis details: (0.3 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at http://www.dnswl.org/, no trust [213.165.64.22 listed in list.dnswl.org] 0.0 FREEMAIL_FROM Sender email is commonly abused enduser mail provider (thomas.rosenkranz.1[at]gmx.de) -0.0 SPF_PASS SPF: sender matches SPF record 0.2 FREEMAIL_ENVFROM_END_DIGIT Envelope-from freemail username ends in digit (thomas.rosenkranz.1[at]gmx.de) 0.0 HTML_MESSAGE BODY: HTML included in message X-Scan-Signature: b16f5c37bc0c21b41453c2ac5e65973c Subject: Re: LF: Re: RE: 472 kHz PA running at 12 VDC Content-Type: multipart/alternative; boundary="----=_NextPart_000_00D9_01CD558E.156A7DF0" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: * X-Spam-Status: No, hits=1.2 required=5.0 tests=HTML_40_50,HTML_FONT_BIG, HTML_MESSAGE,HTML_TITLE_EMPTY,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: 0:2:434969632:93952408 X-AOL-SCOLL-URL_COUNT: 0 x-aol-sid: 3039ac1d40494fecdab65c60 X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none This is a multi-part message in MIME format. ------=_NextPart_000_00D9_01CD558E.156A7DF0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable hy Stefan, hast du auf MW lust?? Thomas ----- Original Message -----=20 From: Stefan Sch=C3=A4fer=20 To: rsgb_lf_group@blacksheep.org=20 Sent: Friday, June 29, 2012 12:18 AM Subject: Re: LF: Re: RE: 472 kHz PA running at 12 VDC Hi Pete,=20 Am 28.06.2012 20:41, schrieb M0FMT:=20 But they have one of the toroids (T1) wow and its not a min order = either double wow!=20 You can make the RFC1 from such a core used for T1 too, or maybe = better two of them. The RFC1 value is not critical. Just if you use a = small one it may become hot. Also it should be ferrite of course, not a = iron powder core. These would need much more turns. Litz can be fabricated from 0.125 Cu/En?=20 Yes of course. The wire pieces are short, so just take a bundle of 8 = or 10 or so instead of the litz i'm using. You will see. Hmm it's plaited ? Oh, plaited, i learned a new word :-) No, just twisted.=20 Generally I buy my power FETs by the hand full off E-bay they may = not be ideal but are cheap!! 50P (eer 60Ec) (Never mind the quality but = feel the width... principle) and the drivers TC range for slightly more. We pay 0.63 EUR at "Reichelt" (well known in DL :-) ). As mentioned, there are many alternatives to the IRFZ48N. You can use = what you want unless the FET: -is a N-CH MOSFET -Drain-Source voltage 55V to 100V (100V is not ideal, watch out for 55 = or 60 or 75 or what you find) -On resistance below 0.1 Ohm=20 -Input C (C iss) in the range below 3 nF, better below 2 nF. I'll keep searching for a bit but if anyone has a kitting list (UK = source) may be they could publish it?=20 And thanks Stefan nothing under the Sun is "New" but in context it = is new and worth while thanks! Yes, but if i don't write this, someone will inform me that someone = has done it before, nearly always :-) As if my intention would be to do = something new (instead of simlply making QSOs or beeing on air :-) ) 73 es GL Pete M0FMT IO91UX 73, Stefan/DK7FC ------=_NextPart_000_00D9_01CD558E.156A7DF0 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable =EF=BB=BF
hy Stefan,
 
hast du auf MW lust??
 
Thomas
----- Original Message -----
From:=20 Stefan = Sch=C3=A4fer
Sent: Friday, June 29, 2012 = 12:18=20 AM
Subject: Re: LF: Re: RE: 472 = kHz PA=20 running at 12 VDC

Hi Pete,

Am 28.06.2012 20:41, schrieb M0FMT:=20 But they have one of the toroids (T1) wow and its not a min order either = double=20 wow! You can make the RFC1 from = such a core=20 used for T1 too, or maybe better two of them. The RFC1 value is not = critical.=20 Just if you use a small one it may become hot. Also it should be = ferrite of=20 course, not a iron powder core. These would need much more = turns.

Litz can be fabricated from 0.125 Cu/En?=20
Yes of course. The wire pieces = are short,=20 so just take a bundle of 8 or 10 or so instead of the litz i'm using. = You will=20 see.

Hmm it's plaited=20 ?Oh, plaited, i learned a new word = :-) No,=20 just twisted.=20
 
Generally I buy my power FETs by the hand full off E-bay they may not be = ideal but=20 are cheap!! 50P (eer = 60Ec) (Never mind the quality but = feel the=20 width... principle) and the drivers TC range for slightly=20 more.
We pay 0.63 EUR at = "Reichelt"=20 (well known in DL :-) ).

As mentioned, there are many = alternatives to=20 the IRFZ48N. You can use what you want unless the FET:
-is a N-CH=20 MOSFET
-Drain-Source voltage 55V to 100V (100V is not ideal, watch = out for=20 55 or 60 or 75 or what you find)
-On resistance below 0.1 Ohm =
-Input C=20 (C iss) in the range below 3 nF, better below 2 nF.

 
I'll keep searching for a bit but if anyone has = a kitting=20 list (UK source) may be they could publish it? 
 
And thanks Stefan nothing under the Sun is "New" = but in=20 context it is new and worth while=20 thanks!
Yes, but if i don't write = this,=20 someone will inform me that someone has done it before, nearly always = :-) As=20 if my intention would be to do something new (instead of simlply = making QSOs=20 or beeing on air :-) )
73 es GL Pete M0FMT=20 IO91UX

 
73,=20 Stefan/DK7FC
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