Return-Path: Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-dh04.r1000.mx.aol.com (Internet Inbound) with ESMTP id 236AD380000A0; Thu, 28 Jun 2012 14:43:02 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1SkJf2-0007WZ-SN for rs_out_1@blacksheep.org; Thu, 28 Jun 2012 19:41:48 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1SkJf1-0007WQ-Rh for rsgb_lf_group@blacksheep.org; Thu, 28 Jun 2012 19:41:47 +0100 Received: from nm10.bullet.mail.ird.yahoo.com ([77.238.189.39]) by relay1.thorcom.net with smtp (Exim 4.77) (envelope-from ) id 1SkJex-0004rA-V9 for rsgb_lf_group@blacksheep.org; Thu, 28 Jun 2012 19:41:46 +0100 Received: from [77.238.189.51] by nm10.bullet.mail.ird.yahoo.com with NNFMP; 28 Jun 2012 18:41:40 -0000 Received: from [212.82.108.253] by tm4.bullet.mail.ird.yahoo.com with NNFMP; 28 Jun 2012 18:41:40 -0000 Received: from [127.0.0.1] by omp1018.mail.ird.yahoo.com with NNFMP; 28 Jun 2012 18:41:40 -0000 X-DKIM-Result: Domain=yahoo.co.uk Result=Good and Known Domain X-Yahoo-Newman-Property: ymail-3 X-Yahoo-Newman-Id: 228610.74480.bm@omp1018.mail.ird.yahoo.com Received: (qmail 70639 invoked by uid 60001); 28 Jun 2012 18:41:40 -0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yahoo.co.uk; s=s1024; t=1340908900; bh=GxyuH3kvARYYvSU1HHAQKx/SAn6cywMqsLTdgDuz5xg=; h=X-YMail-OSG:Received:X-Mailer:References:Message-ID:Date:From:Reply-To:Subject:To:In-Reply-To:MIME-Version:Content-Type; b=ysjUdOFIn3O3iye3PMHbgRbT0+fmtFVx+nXEOzVC2XofOhuLB9WeXbEYWwqzzg8DWhHU16d9vMEJgbLY/8uBXsjEezdwif5W2Vq+HGZlDU5o1s/eH6EDJsejjDbSkWXHTKjmHQLLZERq9SFwKXeUNoHrbeXefA7SNzFkEN+GfA4= DomainKey-Signature:a=rsa-sha1; q=dns; c=nofws; s=s1024; d=yahoo.co.uk; h=X-YMail-OSG:Received:X-Mailer:References:Message-ID:Date:From:Reply-To:Subject:To:In-Reply-To:MIME-Version:Content-Type; b=R76eIswDUHa86D1kLy+ujfXDQDvy7L6mZF9DsLDd2O8PoyYobQtF5j9Qkg/izkXzS65sPFGPvWrQSRk8TrUAGGA5ZFNesEnKdn+q032RxPmDleA/LbWwT/isruKceLw0C7fAMa+egA9Ss0252e523c4vG5Y6UwpN+2fNPrLEOg8=; X-YMail-OSG: Q8kAYRIVM1mu6QSfk35JNDL189n9hjp54CvC4mf82SE7IwZ y8v8M5qCEWkQqf.F36og.F7wBcoPAE9HnJpXA8_dWDUER1vWjDtce_qpEkeH KY90JKZemQI8HPeU1i97I.by4D0fmkPX2kPtSYrRDPtv89B6.AHYh1lMwP44 feaSrztKgWPyj0ZUOL1e.B5oUT3_g6_OiA6sNARVP9bbiquM0OLsVw1Czfjq e6ZcBKl1MaetfA_P2mPbQc6w7Sq4LKR9zojQPS8CfdI5DBLQXB4nmQeWwErb egrv7t.zEjDY8CS0HDavf9uaZl0CP6zYnk.A_Y6KSh3a4ABFBvSciLLngyBV L4ymFWxfRjsZxrobCIJvZg9APQfAmgMBLqVZtG3WLhzP67uwbd3ZMIB.ffSH Ez4jkImdepUhEpyE5hxL_7YylRuiAIYgjIJqfBrPX8FQTxC_seYsOTNL2yPT A6Jh691nusEDZP92TOx3ozIfOHK_7fPN8yR1.21Nw4.lANXmyfXCkRpIL99b H.mNOsGL9knq0i5j..F28nkt9Kw323bN23FB5BJwZoN2Ls4VN6riU4NONi70 W3R5LlrrNeeVgHIRYh52JQZWSjURwTiPI2Q3F3emrW1AlktUc6RasA9s8pvJ QdcxSAUpns1lu_kYvUtTmIm99F8fnrPl1duhroQLh4DcP8NJBbX6z4_XS0TD Is9sJLKAGeSXAFlwjAlAL4gIkSfopdvBH.CsUQdiECvcgOckAU_Tgoczs1Ej eukdOLN0eTzlomViau_of4fR2asG9yEQAWkhhbJvC0ILQryClJQJHe1qVoWl kR0VC.Xe4ZedHfsOjWc.yvHIGCi65ASSNR7Ebsq2_R_iqWLkOOJy6YakhGfQ .EOvYTg-- Received: from [86.163.214.230] by web171605.mail.ir2.yahoo.com via HTTP; Thu, 28 Jun 2012 19:41:39 BST X-Mailer: YahooMailWebService/0.8.118.349524 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> Message-ID: <1340908899.62897.YahooMailNeo@web171605.mail.ir2.yahoo.com> Date: Thu, 28 Jun 2012 19:41:39 +0100 (BST) From: M0FMT To: "rsgb_lf_group@blacksheep.org" In-Reply-To: <4FEC7DDF.8050906@iup.uni-heidelberg.de> MIME-Version: 1.0 X-Spam-Score: 0.0 (/) 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: Hi Stefan  I like this and would like to make to make it. I so far have tracked down most bits but as usual the Unobtainium of so many construction projects that fall at the last hurdle unless they are Kits........ no chance of that I suppose?  There will be those who tell me its easy to get the bits but unless you work for a company that uses this stuff it can not be slipped through the "Purchasing" it becomes a positive stop!! Like the Litz I just put that in one of our big outfits with min orders and it said it had over one hundred thousand Litz and promptly collapsed. But they have one of the toroids (T1) wow and its not a min order either double wow! Litz can be fabricated from 0.125 Cu/En? Hmm it's plaited ? Wima caps are available from Maplin haven't checked in depth but they usually are.  I like the idea of using a DDS or Transceiver as a master osc source div. by four.  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.  I'll keep searching for a bit but if anyone has a kitting list (UK source) may be they could publish it?  And thanks Stefan nothing under the Sun is "New" but in context it is new and worth while thanks! [...] 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 [77.238.189.39 listed in list.dnswl.org] 0.0 FREEMAIL_FROM Sender email is commonly abused enduser mail provider (m0fmt[at]yahoo.co.uk) 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: ce3df9f2acd7587159138e0455ceb9aa Subject: Re: LF: Re: RE: 472 kHz PA running at 12 VDC Content-Type: multipart/alternative; boundary="-176341844-776760311-1340908899=:62897" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.7 required=5.0 tests=HTML_40_50,HTML_FONTCOLOR_BLUE, HTML_FONT_BIG,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 x-aol-global-disposition: G X-AOL-SCOLL-SCORE: 0:2:502760160:93952408 X-AOL-SCOLL-URL_COUNT: 0 X-AOL-SCOLL-AUTHENTICATION: mail_rly_antispam_dkim-m272.2 ; domain : yahoo.co.uk DKIM : fail x-aol-sid: 3039ac1d41184feca5b671b3 X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none ---176341844-776760311-1340908899=:62897 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Hi Stefan=0A=C2=A0=0AI like this and would like to make to make it. I so fa= r have tracked down most bits but as usual the Unobtainium of so many const= ruction projects that fall at the last hurdle unless they are Kits........ = no chance of that I suppose?=0A=C2=A0=0AThere will be those who tell me its= easy to get the bits=C2=A0but unless you work for a company that uses this= stuff it can not be slipped through the "Purchasing"=C2=A0it becomes a pos= itive stop!! =0ALike the Litz I just put that in one of our big outfits wit= h min orders and it said it had over one hundred thousand Litz and promptly= collapsed. But they have one of the toroids (T1) wow and its not a min ord= er either double wow! Litz can be fabricated from 0.125 Cu/En?=C2=A0 Hmm it= 's plaited ?=0AWima caps are available from Maplin haven't checked in depth= but they usually are.=0A=C2=A0=0AI like the idea of using a DDS or Transce= iver as a master osc source div. by four.=0A=C2=A0=0AGenerally=C2=A0I buy m= y 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)= =C2=A0and the drivers TC range for slightly more.=0A=C2=A0=0AI'll keep sear= ching for a bit but if anyone has a kitting list (UK source) may be they co= uld publish it?=C2=A0=0A=C2=A0=0AAnd thanks Stefan nothing under the Sun is= "New" but in context it is new and worth while thanks!=0A=0A73 es GL Pete = M0FMT IO91UX=0A=0A=C2=A0=0A________________________________=0A From: Stefan= Sch=C3=A4fer =0ATo: rsgb_lf_group@b= lacksheep.org =0ASent: Thursday, 28 June 2012, 16:53=0ASubject: Re: LF: Re:= RE: 472 kHz PA running at 12 VDC=0A =0A=0AHi MF, =0A=0ALate at night, i m= ade draw the schematic. Here it is: https://dl.dropbox.com/u/19882028/MF/10= 0W%20475kHz%20PA.png=C2=A0 (picture=0Aof prototype https://dl.dropbox.com/u= /19882028/MF/DK7FC%20472%20kHz%20PA%2015W%2B100W.JPG)=0A=0AMost of the part= s are not critical. =0A=0AThe ferrite cores are the blue EPCOS types, N30 m= aterial. Details are=0Ain the image. But you may use a FT140-77 alternative= ly and double the=0Aprimary and secondary number of turns.=0A=0AThere are m= any alternatives, also to the FETs. Instead of the IRZF48N=0Ayou may try a = IRF1405. This one has a lower on-resistance but a higher=0Ainput capacity. = Maybe it works even better, i didn't try to many parts.=0ASwitching times a= re not critical. So you need to find a compromise=0Abetween low on resistan= ce and input capacity while the Drain-Source=0Avoltage should be 55V for a = 12V supply.=0A=0AInstead of RF litz wire (i use this one: http://www.reiche= lt.de/index.html?ACTION=3D3;ARTICLE=3D57206;SEARCH=3DCLI%20200%2F30 ) you c= an also use 1mm diam. enamel. Cu wire or better 5x0.4mm or what=0Ayou have.= It just affects the efficiency, more or less.=0A=0AThe overall dimensions = of this prototype are 15cm x 10cm x 3cm, so it=0Ais quite compact and since= it runs from a 12V battery you can use it=0Afor /p tests. Also you can of = course use more than 2 power steps by=0Ausing a multi step switch and more = taps.=0A=0AA DDS signal generator with rectangular wave form or a sine sign= al=0Acoming from a HF TX may be used. The waveform doesn't matter as long a= s=0Athe peak input voltage exceeds 5 Vp.=0A=0A73, Stefan/DK7FC=0A=0APS: Yes= , it is nothing new and someone has done it before!=0A=0A=0A=0A=0A=0A=0AAm = 28.06.2012 11:46, schrieb M0FMT: =0AHi again Stefan =0A>=C2=A0 =0A>The Litz= is too, only by the Km or 10Kg reel.......... :@(( =0A>=0A>Do you create y= our own I have 0.125 solid C/E guess that could=0Abe stranded up to make a = synth? =0A>=0A>=C2=A0 =0A>73 es GL Pete M0FMT IO91UX=0A>=0A>From: M0FMT mai= lto:m0fmt@yahoo.co.uk=0A>To: mailto:rsgb_lf_group@blacksheep.org mailto:rsg= b_lf_group@blacksheep.org =0A>Sent: Thursday, 28=0AJune 2012, 10:22=0A>Subj= ect: Re: LF: Re:=0ARE: 472 kHz PA running at 12 VDC=0A> =0A>=0A>Hi Stefan = =0A>http://www.ebay.co.uk/itm/IRFZ24N-Transistor-x-1-pieces-IRFZ24-/1608182= 53496?pt=3DUK_BOI_Electrical_Components_Supplies_ET&hash=3Ditem257183ceb8 = =0A>Just over =C2=A35 a pop! =0A>http://www.ebay.co.uk/itm/NEW-ICL7667CPA-M= AXIM-IC-DRIVER-MOSFET-DUAL-PWR-8-DIP-1-PIECE-B7-/160779362423?pt=3DLH_Defau= ltDomain_0&hash=3Ditem256f326077 =0A>Just over =C2=A36 a pop! =0A>But what = is the =E2=80=9CUnobtainium=E2=80=9D ferrite?=C2=A0=C2=A0 =E2=80=A6=E2=80= =A6 ;0) =0A>Chees Pete FMT =0A>=C2=A0=C2=A0 From: Jean-Pierre M=C3=A9r=C3= =A9 mailto:jpm.f1afj@online.fr=0A>To: rsgb_lf_group@blacksheep.org =0A>Sent= : Thursday, 28=0AJune 2012, 9:42=0A>Subject: Re: LF: Re:=0ARE: 472 kHz PA r= unning at 12 VDC=0A> =0A>=0A>=0A>Hello Stephan ,=0A>Me too =0A>73=C2=A0 , J= ean-Pierre F1AFJ=C2=A0 =0A>=0A>=0A>=0A>=0A>Le 28/06/2012 10:36, M0FMT=0Aa = =C3=A9crit=C2=A0:=0A> =0A>Hi Stephan =0A>>=0A>>Me Too=0A>>=0A>> =0A>>73 es = GL Pete M0FMT IO91UX=0A>>=0A>>From: "PA1SDB, Peter" mailto:pa1sdb@amsat.org= =0A>>To: rsgb_lf_group@blacksheep.org =0A>>Sent: Thursday, 28=0AJune 2012, = 9:12=0A>>Subject: LF: Re: RE:=0A472 kHz PA running at 12 VDC=0A>> =0A>>=0A= >> =0A>>like =0A>>=0A>>----- Original Message ----- =0A>>>From: Rik=0AStro= bbe =0A>>>To: rsgb_lf_group@blacksheep.org =0A>>>Sent: Thursday, June 28,= 2012 6:35 AM =0A>>>Subject: LF: RE: 472 kHz PA running at 12 VDC =0A>>>=0A= >>> =0A>>>If=C2=A0someone=0Ais=C2=A0interested i=C2=A0may=C2=A0convert the = circuit=C2=A0from=C2=A0my=C2=A0mind=C2=A0into a schematic=0Aas a=C2=A0png f= ile. =0A>>>=0A>>>Always=C2=A0interested ;-) =0A>>>=0A>>>73, Rik=C2=A0=C2=A0= ON7YD - OR7T =0A>>=0A>> =0A>=0A> =0A>=0A> =0A>=0A> ---176341844-776760311-1340908899=:62897 Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: quoted-printable
Hi= Stefan
 
I like th= is and would like to make to make it. I so far have tracked down most bits = but as usual the Unobtainium = of so many construction projects that fall at the last hurdle unless they a= re Kits........ no chance of that I suppose?
=  
Ther= e will be those who tell me its easy to get the bits but unless you wo= rk for a company that uses this stuff it can not be slipped through the "Pu= rchasing" it becomes a positive stop!!
= Like the Litz I just put that in one of our big outfits with min orders and it said it had over one hund= red thousand Litz and promptl= y collapsed. But they have one = of the toroids (T1) wow and i= ts not a min order either double wow! Litz can be fabricated= from 0.125 Cu/En?  Hmm = it's plaited ?
Wima caps are available from Maplin haven't checked in depth but they u= sually are.
 
I like the idea of using a DDS or Transceiver as a master osc source div. by four.
 
G= enerally 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.<= /div>
 
I'll ke= ep searching for a bit but if anyone has a kitting list (UK source) may be = they could publish it? 
 
And thanks Stefan nothing under the Sun is "Ne= w" but in context it is new and worth while thanks!
73 es GL Pete= M0FMT IO91UX
 
From: Stefan Sch=C3=A4fer <St= efan.Schaefer@iup.uni-heidelberg.de>
To: rsgb_lf_group@blacksheep.org
Sent: Thursday, 28 June 2012, 16:53
Subject: Re: LF: Re: RE: 472 kH= z PA running at 12 VDC
<= /font>

=0A=0A=0A =0A=0A
=0AHi MF,
=0A
=0ALate at night, i made draw the schem= atic. Here it is:=0Ahttps://dl.dropbox.com/u/19882028/MF/100W%20475kHz%20P= A.png  (picture=0Aof prototype=0Ahttps://dl.drop= box.com/u/19882028/MF/DK7FC%20472%20kHz%20PA%2015W%2B100W.JPG)
=0A=0AMost of the parts are not critical.
=0A
=0AThe ferrite cores ar= e the blue EPCOS types, N30 = material. Details are=0Ain the image. But you may use a FT140-77 alternativ= ely and double the=0Aprimary and secondary number of turns.
=0A
=0ATh= ere are many alternatives, also to the FETs. Instead of the IRZ= F48N=0Ayou may try a IRF1405. This one has a lower on-resistance but a higher=0Ainput capacity. = Maybe it works even better, i didn't try to many parts.=0ASwitching times a= re not critical. So you need to find a compromise=0Abetween low on resistan= ce and input capacity while the Drain-Source=0Avoltage should be 55V for a = 12V supply.
=0A
=0AInstead of RF litz wire (i use this one:=0Ahttp://ww= w.reichelt.de/index.html?ACTION=3D3;ARTICLE=3D57206;SEARCH=3DCLI%20200%2F30= =0A) you can also use 1mm diam. enamel. Cu wire or better 5x0.4mm or wh= at=0Ayou have. It just affects the efficiency, more or less.
=0A
=0AT= he overall dimensions of this prototype are 15cm x 10cm x 3cm, so it=0Ais q= uite compact and since it runs from a 12V battery you can use it=0Afor /p t= ests. Also you can of course use more than 2 power steps by=0Ausing a multi step switch and more taps.<= br>=0A
=0AA DDS signal generator with rectangular wave form or a sine si= gnal=0Acoming from a HF TX may be used. The waveform doesn't matter as long= as=0Athe peak input voltage exceeds 5 Vp.
=0A
=0A73, Stefan/DK7FC
=0A
= =0APS: Yes, it is nothing new and someone has done it before!
=0A
=0A=
=0A
=0A
=0A
=0A
=0AAm 28.06.2012 11:46, schrieb M0FMT:=0A
=0A =
=0A
Hi again Stefan
=0A
 
=0A The Litz is too, only= by the Km or 10Kg reel.......... :@((
=0A
 
= =0A
Do you create your own I have 0.125 solid C/E guess that could=0A= be stranded up to make a synth?
=0A

=0A 
=0A
73 es GL Pete M0FMT IO91UX
=0A
=0A
=0A
From: M0FMT=0Amailto:m0fmt@yahoo.co.uk
=0A To:=0Amailto:rsgb_lf_= group@blacksheep.org mailto:rsgb_lf_group@blac= ksheep.org
=0A Sent:<= /b> Thursday, 28=0AJune 2012, 10:22
=0A Subject: Re: LF: Re:=0ARE: 472 kHz PA running at 12 VDC
=0A
=0A =0A
=0A
=0A =0A
Just over =C2=A36 a pop!
= =0A
But what is the =E2=80=9CUnobtainium=E2=80=9D ferrite?   =E2=80=A6=E2=80=A6 ;0)
=0A
=0A
Chees Pete FMT=0A
  = ; From: Jean-Pierre M=C3= =A9r=C3=A9=0Amailto:jpm.f1afj@online.fr
=0A To:=0Arsgb_l= f_group@blacksheep.org
=0A S= ent: Thursday, 28=0AJune 2012, 9:42
=0A Subject: Re: LF: Re:=0ARE: 472 kHz PA running = at 12 VDC
=0A
=0A
=0A
=0A
=0A
= =0A
=0A
Hello Stephan ,
=0AMe too
= =0A73  , Jean-Pierre F1AFJ 
=0A
=0A
=0A
=0A <= div class=3D"yiv758666620moz-cite-prefix">Le 28/06/2012 10:36, M0FMT=0Aa = =C3=A9crit :
=0A
=0A
=0A
=0A
H= i Stephan
=0A  
=0A
Me Too
=0A
=0A
=0A
73= es GL Pete M0FMT IO91UX
=0A
=0A
=0A
From: "PA1SDB, Peter" mailto:pa1sdb@amsat.org
=0A To: rsgb_lf_group@blacksheep.org=0A
=0A Sent: Thursday, 28=0AJune 2012, 9:12
=0A = Subject: LF: Re: RE:=0A47= 2 kHz PA running at 12 VDC
=0A
=0A
=0A
=0A =0A
=0A
li= ke
=0A
 
=0A
=0A
-----=0A=0AOriginal Message -----
= =0A
From:=0A Rik=0AStrobbe
=0A =0A =
Sent:=0AThursday, June 28, 2012 6:35 AM
=0A =
Subject:=0ALF: RE: 472 kHz PA running at 12 VDC
=0A=

=0A
=0A
<= i>If someone=0Ais interested i may convert t= he circuit from my mind into a schematic=0Aas a pn= g file.
=0A
 
=0A
Always interested ;-)
=0A  
=0A
73, Rik &n= bsp;ON7YD - OR7T
=0A
=0A
=0A
= =0A
=0A
=0A
=0A
=0A
=0A
= =0A
=0A
=0A
=0A
=0A
=0A
=0A =0A
=0A
=0A
=0A
=0A =0A =0A =0A
=0A =0A =0A =0A =0A=0A=0A=0A

---176341844-776760311-1340908899=:62897--